Note: This post summarizes the entire thread so you do not have to read over 700 replies!
UPDATE (AUGUST 11TH, 2023)
You are probably reading this because you used LatencyMon and it revealed an issue in the Nvidia graphics driver. Everything you need to know is contained in this post, so keep reading. This thread started as an IRQ conflict, but evolved as we learned more, and eventually resulted in the discovery of several bugs causing high latency, which reveals itself in the form of stutters, freezes, crashing, and audio problems.
After months of research and testing, this thread prompted Nvidia and Microsoft to finally acknowledge these issues, which have plagued gamers and audio enthusiasts for many years. This thread also resulted in the creation of a guide that helps people optimize their computers for lower latency. It is important that we make a distinction here because half of these Deferred Procedure Call (DPC) issues are due to Nvidia and Microsoft bugs, while the other half come from computers that need optimizing.
The purpose of this thread was to identify the cause of the malfunctioning nvlddmkm.sys driver and find a tweak to mitigate it. While there were no reliable fixes discovered, Nvidia later added it to their open issues tracker, so we then waited for their response. Several updates were released to fix various bugs, and then an update specifically for the 3xxx series (Ampere architecture) was included because those cards had additional issues that were making the latency even worse. These fixes are included in drivers dated July 18th, 2023 or newer, and while legacy cards still receive security updates, it is unlikely they will get any other fixes, such as those related to DPC latency.
Other problems affecting Nvidia were bugs in the Desktop Window Manager (DWM) and Timeout Detection and Recovery (TDR) features. Microsoft has several preview fixes (link1, link2, link3, link4) for these, but it may be a while before they are available to everyone, and additional updates might be needed after the public has a chance to provide feedback. If the updates are finalized in time, they will be included in the ISO images (link5, link6) that Microsoft posts near the end of each year, and the best advice would be to do a clean install of Windows using those updated builds, and the latest Nvidia driver. Only Windows 10 and 11 will be receiving these updates.
For all other DPC issues, solutions have existed forever in the form of tweaking a computer for more performance. The Gaming Lounge (link7) has a huge list of important information regarding this. The takeaway here is to optimize, which means learning how to cleanly install the operating system, properly installing drivers and firmware, adjusting the BIOS for low latency, and using NTLite to slim down Windows.
Hopefully the Nvidia driver will be fully resolved by the start of 2024, but if the issues persist then all we can do is encourage everyone to submit support tickets to Nvidia and the Microsoft Feedback Hub, contact computer and gaming sites to have them write articles about it, and go to social media to continually remind these companies of the problem until it is addressed.
ORIGINAL POST (JULY 15TH, 2022)
LatencyMon reveals that nvlddmkm.sys (Nvidia Graphics driver kernel) has DPC latency spikes up to 800 microseconds fairly frequently. This is an extremely common issue that can be found all over Google, but I have not come across any solutions, except for a nonsensical one.
According to a post at LinusTechTips forum (link) this is happening because the graphics card is sharing an IRQ with a problematic device. On my computer, msinfo32.exe says the graphics card is sharing IRQ 16 with a motherboard USB host controller.
The solution is to force the IRQ to be reassigned, but the steps are extremely clunky. There has to be a better way than this? I already have an idea in mind that I will test tomorrow, where I will go into my BIOS and disable USB ports until I find the ones tied to this controller, and then move hardware around and reinstall Windows. This seems better than doing the steps listed in the solution, but may not help.
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zGunBLADEz,
Is there any way i can reduce the latency ? Is this the normal latency ? Since my cpu doesn’t have integrated igpu. My gpu driver version 456.55 tried the latest driver but it cause it even more up to 10. Thanks
My system:
Ryzen 5 3600
Rtx 2060
B450 tomhawk max
512 gb transcend ssd
corsair cx650 bronze psu
16 gigs ram 3200 mhz
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2
This spike is happening when the p-state changes. I wouldn’t worry about it as the same thing happens with my RTX 3090. P-state changes always have a DPC spike.
This spike is happening when the p-state changes. I wouldn’t worry about it as the same thing happens with my RTX 3090. P-state changes always have a DPC spike.
Yeah, this is only a problem if you want it to be one. However, if this is related to p-states, setting power management to prefer maximum performance should solve it, right?
This spike is happening when the p-state changes. I wouldn’t worry about it as the same thing happens with my RTX 3090. P-state changes always have a DPC spike.
I am not getting spikes tho. Like when i am using chrome playing video or playing cod mw my latency stays 1.2+
Nvidia has a problem with DPC latency every single launch of new GPUs as they update their drivers, break crap ton of things in process and fail to realize that driver latency matters and they bloat it up.
And yes alt+tab etc. makes this tools fairly useless as you need to see live values not just max, max often happens during changes of window focus, change of state, …
Thats normal. Been a issue since Maxwell drivers and they just dont care.
Is this an AMD only issue?
No issues on my Maximus 12 extreme and 3090.
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Is this an AMD only issue?
No issues on my Maximus 12 extreme and 3090.View attachment 2463537
its probably more a per system scenario, i wouldnt doubt it. either that or we all put our tinfoil hats on, and say intel is paying off nvidia
also, to OP: i am doubting, in any real world scenario, that your going to notice that 1ms delay, if it was 4 or 5 you might.
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Is this an AMD only issue?
No issues on my Maximus 12 extreme and 3090.View attachment 2463537
You ran it for a minute and did nothing. If he did the same thing his would look like yours. Now with LatencyMon running go open a Twitch stream in Google Chrome or a game and watch the spike happen. Post what yours looks like and I bet you it looks the same. P-state changes cause the spike. It is normal.
Bullshit.
I was running Heaven benchmark at the same time. I do not like nor appreciate when people accuse me of something I didn’t do.
Here. Take this and shove it. Sorry for knowing how to maintain my system correctly.View attachment 2463614
I have no trouble achieving low DPC latency on nvlddmkm either.
My power management is fully enabled in BIOS. These are 30+ minute runs. Even on balanced the numbers are not terrible either.
On balance mode
On Ultimate Performance
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Disable sysmain service.. restart windows and try latencymon again
I have no trouble achieving low DPC latency on nvlddmkm either.
My power management is fully enabled in BIOS. These are 30+ minute runs. Even on balanced the numbers are not terrible either.On balance mode
View attachment 2463627
On Ultimate Performance
View attachment 2463628
Thank you.
It’s sad that some people think that just because someone has a problem, that everyone else must have a problem, and you literally have to record 30 minute videos of multiple games and benchmarks running at the same time to convince them it’s their system that’s at fault, not ours
Thank you.
It’s sad that some people think that just because someone has a problem, that everyone else must have a problem, and you literally have to record 30 minute videos of multiple games and benchmarks running at the same time to convince them it’s their system that’s at fault, not ours![:)]( "Smile :)")
You are a clown you still haven’t posted what I asked since I mentioned it was specific to the RTX 3090. You are confusing me with the OP. I do not have any latency issues as well.
Is there any way i can reduce the latency ? Is this the normal latency ? Since my cpu doesn’t have integrated igpu. My gpu driver version 456.55 tried the latest driver but it cause it even more up to 10. Thanks
My system:
Ryzen 5 3600
Rtx 2060
B450 tomhawk max
512 gb transcend ssd
corsair cx650 bronze psu
16 gigs ram 3200 mhzView attachment 2463490
View attachment 2463493
Disable sysmain service.. restart windows and try latencymon again
The DPC latency as far as I remember is a major problem for «real time» users such as audio engineers and why they may avoid Nvidia GPUs entirely, cherry pick an OS or entire platform.
Sometimes the DPC latency was so bad it can cause problems even for regular users.
All you can do is submit bug reports directly at Nvidia’s site and complain to the internet, trying to get attention and Nvidia noticing that it’s being talked negatively about for a reason and fix that reason.
Back when Pascal launched, I’ve had the high DPC too, everyone pretty much suffers from it with new NV GPUs or even just new generation/major update of NV drivers.
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M12 extreme + 3090 strix oc and have this problem big time.
first it was acpi.sys breaking havoc and after stopping monitoring the EC sensors on the mb it resolved but nvlddmkm.sys dpc is still crazy high.
The DPC latency as far as I remember is a major problem for «real time» users such as audio engineers and why they may avoid Nvidia GPUs entirely, cherry pick an OS or entire platform.
Sometimes the DPC latency was so bad it can cause problems even for regular users.All you can do is submit bug reports directly at Nvidia’s site and complain to the internet, trying to get attention and Nvidia noticing that it’s being talked negatively about for a reason and fix that reason.
Back when Pascal launched, I’ve had the high DPC too, everyone pretty much suffers from it with new NV GPUs or even just new generation/major update of NV drivers.
it also affects frametimes ALOT…
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Содержание
- Высокие задержки DPC в видеокартах NVIDIA GTX 10-х серий и метод решения этой проблемы
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- Nvidia windows kernel mode driver dpc latency
- DPC Latency Caused by Nvidia Drivers
- NVIDIA Windows Kernel Module Driver high latency causing in game microstutter.
- nevermore15
- High DPC Latency (nvlddmkm.sys, dxgkrnl.sys, Wdf01000.sys, ACPI.sys)
- levider
Высокие задержки DPC в видеокартах NVIDIA GTX 10-х серий и метод решения этой проблемы
До сих пор еще, очень много пользователей имеют в своих компьютерах видеокарты Nvidia 10-ой серии GTX 1060, GTX 1070, GTX 1080. Их владельцы по причине массового безумства, называемого майнингом, так и не смогли их поменять на видеокарты 20 и 30 серии по известным причинам. Потому данная серия видеокарт на сегодняшний день является актуальной для пользователей. И я не являюсь исключением, у меня есть компьютер с видеокартой PALIT JETSTREAM GTX 1070.
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Майнинг нас всех вынудил сделать шаг назад по поколениям комплектующих. В начале 2020 года я думал, что моя видеокарта доживает уже последние дни своей актуальности. А сейчас понимаю, что она полностью актуальна на сегодняшний день, в связи со сложившейся ситуацией на рынке видеокарт.
В этой статье хочу поделиться с читателями о том, как компания NVIDIA в очередной раз «села в лужу» с видеокартами 10-й серии, причем конкретно так села, и до сих пор так и не смогла устранить имеющиеся с ними проблемы. Видеокарты Nvidia 10 серии прославились фризами и подвисаниями в играх, несмотря на высокие значения FPS при этом. Разбираться с этим вопросом я стал после того, как сам столкнулся с такими проблемами на своей видеокарте GTX 1070. Причем изменение настроек в любых их вариантах проблему не решило, фризы никуда не исчезли. Единственная настройка в драйвере видеокарты (в панели управления NVIDIA), которая хотя бы несколько уменьшила фризы, это включение на «ультра» режима низкой задержки.
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Ответ компании NVIDIA, что проблема решена..
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Последующая жалоба в компанию NVIDIA о нерешенной проблеме.
Никакие программные ухищрения к устранению данной проблемы не привели. А драйвера начиная с версии 386.95 с хост-фиксом, это такая себе полумера, для отвода глаз, которая проблему окончательно так и не решила, и после выпуска этого драйвера жалобы так и не прекратились. У меня вообще сложилось впечатление, что компания NVIDIA специально, осознанно «завалила» этот параметр задержек, чтобы за счет его ухудшения улучшить другие, по которым оценивается производительность в синтетических тестах, таким образом, для значительного повышения FPS они и создали эту неправильную работу системных таймеров прерываний. И получается, что в тестах все прекрасно, а играть невозможно.
Данную проблему еще усугубляет «количество подготовленных кадров», опция этого параметра так же находится в панели управления NVIDIA. Подготовленные кадры, так сказать кадры, хранящиеся в запасе, необходимы для того, чтобы поступление их на рендеринг в видеокарту от центрального процессора было непрерывным, даже если центральный процессор «затупит», и не успеет подготовить очередной кадр в срок по какой-либо причине. Эта функция не позволяет видеокарте простаивать в момент отсутствия очередного кадра от центрального процессора, кадр берется из запаса. Так же эта функция повышает FPS (количество кадров в секунду), но она значительно увеличивает задержки DPC, и для уменьшения задержек необходимо эту функцию отключить, или свести к минимуму количество подготовленных кадров.
Приведу для примера измерение задержек в своем компьютере с помощью программы «LatencyMon». Она в режиме реального времени проводит измерение задержек, и в случае превышения задержек, в скобках указывает виновника.
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В первом случае отключаю драйвер видеокарты NVIDIA путем отключения устройства «NVIDIA GeForce GTX 1070» в диспетчере устройств, видеокарта в этом случае будет работать без драйвера, и провожу измерение задержек.
И по результату измерений видно, что программа «LatencyMon» ничего касающегося видеокарты, как виновника больших задержек не указала. А указала сетевой драйвер (network driver interface specification).
Теперь включаю драйвер видеокарты NVIDIA путем включения устройства «NVIDIA GeForce GTX 1070» в диспетчере устройств, и провожу повторно измерение.
И теперь видно, что программа «LatencyMon» указала виновника в больших задержках, которые составляют 551 мкс. И это драйвер видеокарты NVIDIA версии 465.89.
Что бы хотелось посоветовать для уменьшения эффекта фризов в видеокартах NVIDIA GTX 10-х серий:
1. В настройках панели управления NVIDIA, в режиме управления электропитанием установить режим максимальной производительности.
2. В настройках панели управления NVIDIA, режим низкой задержки обязательно включить на «ультра».
3. В настройках панели управления NVIDIA, максимальное количество заранее подготовленных кадров установить на минимум.
Сталкивались ли вы с такой проблемой в видеокартах NVIDIA GTX 10-х серий? И как вы их решили? Пишите в комментариях.
Источник
Как уже не раз говорилось – не у всех и не всегда настройки из данного гайда дадут хорошие результаты в плане FPS, но в первую очередь он предназначен для уменьшения задержек с чем он должен справится у большинства.
Все тесты сделаны в чистой Windows (всё настроено и используется по-умолчанию), но с обновлёнными драйверами nVidia, а в качестве оппонента выступает та же Windows, но уже настроенная по гайду. Следует учитывать, что как и все тесты они не показывают полноты всей картины, разбежки между запусками это нормально, поэтому приведены средние результаты.
Версии используемые в тестах:
Благодаря nVidia тут замечательно видно, что основу моих задержек составляют именно её драйверы (к слову, на предыдущей версии результаты были получше), а борьба с этим отдельный вид искусства. Так же эти результаты не показывают идеальный вариант, а весьма наглядно демонстрируют что улучшилось и с чем еще предстоит бороться.
‼️ Рекомендуется после обновления драйверов nVidia смотреть с помощью LatencyMon не стало ли хуже и, весьма вероятно, имеет смысл откатить драйвер на предыдущую версию.
Результаты LatencyMon после настройки:
Результаты LatencyMon до настройки:
Результаты LatencyMon после настройки:
Результаты LatencyMon до настройки:
Для оценки можно придерживаться примерно таких оптимальных цифр в результатах статистики:
Если ваши значения не больше чем в два раза, то есть смысл для более детального решения проблемы – поиска проблемных устройств или драйверов (о чём будет ниже). Если же ваши значения больше на несколько порядков, то что-то в вашей системе явно не так.
Результаты LatencyMon после настройки:
Результаты LatencyMon до настройки:
На этой вкладке можно увидеть какие именно драйверы влияют на задержки и исходя из показателей искать решение.
Основной список системных драйверов:
Результаты LatencyMon после настройки:
Результаты LatencyMon до настройки:
Здесь можно более подробно посмотреть как распараллелены драйверы по ядрам и их загрузка.
В качестве дополнительной оптимизации так же можно попробовать перенести драйвер сетевого адаптера на другое ядро, но по-хорошему, кроме печальной или не очень статистики, с этим мы вряд ли можем что-то сделать не угробив в дальнейшем Windows.
Для облизывания на FPS мы будем использовать популярный синтетический стресс-тест FurMark [скачать] для оценки производительности в Open GL.
Результаты FurMark после настройки:
Результаты FurMark до настройки:
✨ Кроме того, не стоит пренебрегать такими решениями как MSI Afterburner и настройками в BIOS для увеличение производительности GPU и CPU. Поэтому результаты в играх при правильном подходе будут показывать еще больший прирост в производительности.
Источник
DPC Latency Caused by Nvidia Drivers
| Processor | AMD Ryzen 3700X |
|---|---|
| Motherboard | Asus X570 TUF Gaming Plus |
| Cooling | NZXT Kraken X62 |
| Memory | G.Skill 2x8GB 3600CL16 |
| Video Card(s) | Asus Strix RTX 2070 |
| Storage | Samsung 850 SSD 500GB |
| Display(s) | Acer Predator XB271HU |
| Case | NZXT S340 Elite |
I dont edit audio, but I am after tweaking my system. I’ve used DPC Latency Checker to measure the systems latency and found it is most likely caused by the Nvidia drivers. Nvidia has addressed this in the past and claims it was fixed.
Setup: AMD 3700X set to 4.0Ghz constant, with C-States disabled. GPU RTX 2070 no OC. Fresh install o Windows 10 2004 build 19041.421, only Windows10 default drivers and Nvidia Driver 451.85 is installed. Tried also moded W10 with removed bloatware (Superlite edition). Also removed all possibly AMD, Intel, Nvidia by Windows installed drivers with Display Driver Uninstaller and installed Nvidia Driver only, without PhysX, HD Audio, Experience, USB-C.
When I disable the Nvidia Driver in Device Manager
The latency is a lot lower
I did not try older Nvidia drivers as I like the Max Frame Rate option in the newer driver versions. As I dont have to run Riva Tuner or any additional software to have a fixed max frame rate.
I’ve ruled out HPET On/Off tweaking as the latency result was reproducible when disabling the Nvidia driver.
Источник
NVIDIA Windows Kernel Module Driver high latency causing in game microstutter.
nevermore15
Active member
Hi there, I’ve been having issues for around 4 months where all my videogames stutter and micro stutter to some degree. It’s been really frustrating and I hope that one of y’all can help. I’ve tried countless guides and I’ve even gone to Microcenter to have the techs look at it just for them to tell me that there’s nothing that they can do. I used latency mon and I’ve attatched the results. Sorry if something in my post is wrong. I’m not too experienced with this stuff. It seems that its mostly the NVIDIA Kernel Driver during gaming, and the Network driver interface specification during normal use. Please let me know if I need to post more information I just want to get this over with.
Specs: ASUS ROG B450F Gaming II
Zotac RTX 3070
Ryzen 3600x
16gb corsair vengeance white 3200mhz
500gb Nvme m.2 WD black
2tb WD Hard Drive
750 watt PSU
_________________________________________________________________________________________________________
CONCLUSION
_________________________________________________________________________________________________________
Your system appears to be suitable for handling real-time audio and other tasks without dropouts.
LatencyMon has been analyzing your system for 0:02:14 (h:mm:ss) on all processors.
_________________________________________________________________________________________________________
SYSTEM INFORMATION
_________________________________________________________________________________________________________
Computer name: DESKTOP-ITVKR7D
OS version: Windows 10, 10.0, version 2009, build: 19042 (x64)
Hardware: System Product Name, System manufacturer
CPU: AuthenticAMD AMD Ryzen 5 3600X 6-Core Processor
Logical processors: 12
Processor groups: 1
RAM: 16294 MB total
_________________________________________________________________________________________________________
CPU SPEED
_________________________________________________________________________________________________________
Reported CPU speed: 380 MHz
Note: reported execution times may be calculated based on a fixed reported CPU speed. Disable variable speed settings like Intel Speed Step and AMD Cool N Quiet in the BIOS setup for more accurate results.
_________________________________________________________________________________________________________
MEASURED INTERRUPT TO USER PROCESS LATENCIES
_________________________________________________________________________________________________________
The interrupt to process latency reflects the measured interval that a usermode process needed to respond to a hardware request from the moment the interrupt service routine started execution. This includes
the scheduling and execution of a DPC routine, the signaling of an event and the waking up of a usermode thread from an idle wait state in response to that event.
Highest measured interrupt to process latency (µs): 796.10
Average measured interrupt to process latency (µs): 7.373617
Highest measured interrupt to DPC latency (µs): 791.90
Average measured interrupt to DPC latency (µs): 3.786315
_________________________________________________________________________________________________________
REPORTED ISRs
_________________________________________________________________________________________________________
Interrupt service routines are routines installed by the OS and device drivers that execute in response to a hardware interrupt signal.
Total time spent in ISRs (%) 0.007531
ISR count (execution time =4000 µs): 0
_________________________________________________________________________________________________________
REPORTED DPCs
_________________________________________________________________________________________________________
DPC routines are part of the interrupt servicing dispatch mechanism and disable the possibility for a process to utilize the CPU while it is interrupted until the DPC has finished execution.
Total time spent in DPCs (%) 0.848527
DPC count (execution time =4000 µs): 0
_________________________________________________________________________________________________________
REPORTED HARD PAGEFAULTS
_________________________________________________________________________________________________________
Hard pagefaults are events that get triggered by making use of virtual memory that is not resident in RAM but backed by a memory mapped file on disk. The process of resolving the hard pagefault requires
reading in the memory from disk while the process is interrupted and blocked from execution.
NOTE: some processes were hit by hard pagefaults. If these were programs producing audio, they are likely to interrupt the audio stream resulting in dropouts, clicks and pops. Check the Processes tab to see
which programs were hit.
Process with highest pagefault count: msmpeng.exe
Total number of hard pagefaults 3006
Hard pagefault count of hardest hit process: 1077
Number of processes hit: 58
_________________________________________________________________________________________________________
PER CPU DATA
_________________________________________________________________________________________________________
CPU 0 Interrupt cycle time (s): 13.877046
CPU 0 ISR highest execution time (µs): 94.790
CPU 0 ISR total execution time (s): 0.001418
CPU 0 ISR count: 439
CPU 0 DPC highest execution time (µs): 947.220
CPU 0 DPC total execution time (s): 5.532492
CPU 0 DPC count: 155462
_________________________________________________________________________________________________________
CPU 1 Interrupt cycle time (s): 10.036351
CPU 1 ISR highest execution time (µs): 80.410
CPU 1 ISR total execution time (s): 0.001399
CPU 1 ISR count: 1022
CPU 1 DPC highest execution time (µs): 883.020
CPU 1 DPC total execution time (s): 3.329040
CPU 1 DPC count: 112728
_________________________________________________________________________________________________________
CPU 2 Interrupt cycle time (s): 8.029588
CPU 2 ISR highest execution time (µs): 85.170
CPU 2 ISR total execution time (s): 0.008390
CPU 2 ISR count: 2299
CPU 2 DPC highest execution time (µs): 914.610
CPU 2 DPC total execution time (s): 2.778771
CPU 2 DPC count: 67206
_________________________________________________________________________________________________________
CPU 3 Interrupt cycle time (s): 2.713610
CPU 3 ISR highest execution time (µs): 103.330
CPU 3 ISR total execution time (s): 0.018220
CPU 3 ISR count: 17726
CPU 3 DPC highest execution time (µs): 572.630
CPU 3 DPC total execution time (s): 0.736754
CPU 3 DPC count: 32188
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CPU 4 Interrupt cycle time (s): 2.126310
CPU 4 ISR highest execution time (µs): 106.160
CPU 4 ISR total execution time (s): 0.030711
CPU 4 ISR count: 17578
CPU 4 DPC highest execution time (µs): 490.790
CPU 4 DPC total execution time (s): 0.564582
CPU 4 DPC count: 28795
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CPU 5 Interrupt cycle time (s): 1.290346
CPU 5 ISR highest execution time (µs): 117.050
CPU 5 ISR total execution time (s): 0.019130
CPU 5 ISR count: 10471
CPU 5 DPC highest execution time (µs): 196.340
CPU 5 DPC total execution time (s): 0.268027
CPU 5 DPC count: 16862
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CPU 6 Interrupt cycle time (s): 0.817404
CPU 6 ISR highest execution time (µs): 108.40
CPU 6 ISR total execution time (s): 0.009544
CPU 6 ISR count: 2585
CPU 6 DPC highest execution time (µs): 164.870
CPU 6 DPC total execution time (s): 0.087005
CPU 6 DPC count: 12797
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CPU 7 Interrupt cycle time (s): 0.760451
CPU 7 ISR highest execution time (µs): 8.870
CPU 7 ISR total execution time (s): 0.000302
CPU 7 ISR count: 52
CPU 7 DPC highest execution time (µs): 110.340
CPU 7 DPC total execution time (s): 0.026813
CPU 7 DPC count: 6535
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CPU 8 Interrupt cycle time (s): 0.979627
CPU 8 ISR highest execution time (µs): 102.610
CPU 8 ISR total execution time (s): 0.020786
CPU 8 ISR count: 37079
CPU 8 DPC highest execution time (µs): 123.650
CPU 8 DPC total execution time (s): 0.064216
CPU 8 DPC count: 14415
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CPU 9 Interrupt cycle time (s): 0.803844
CPU 9 ISR highest execution time (µs): 5.090
CPU 9 ISR total execution time (s): 0.001536
CPU 9 ISR count: 2253
CPU 9 DPC highest execution time (µs): 162.520
CPU 9 DPC total execution time (s): 0.049710
CPU 9 DPC count: 9496
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CPU 10 Interrupt cycle time (s): 0.950035
CPU 10 ISR highest execution time (µs): 93.940
CPU 10 ISR total execution time (s): 0.003605
CPU 10 ISR count: 4844
CPU 10 DPC highest execution time (µs): 128.990
CPU 10 DPC total execution time (s): 0.091793
CPU 10 DPC count: 18429
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CPU 11 Interrupt cycle time (s): 1.026593
CPU 11 ISR highest execution time (µs): 108.970
CPU 11 ISR total execution time (s): 0.006137
CPU 11 ISR count: 8964
CPU 11 DPC highest execution time (µs): 132.330
CPU 11 DPC total execution time (s): 0.124589
CPU 11 DPC count: 18301
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Источник
High DPC Latency (nvlddmkm.sys, dxgkrnl.sys, Wdf01000.sys, ACPI.sys)
levider
Member
Hello guys
I have huge problem with high DPC latency on my Omen laptop
1. I reinstalled Nvidia drivers (now without PhysX, only main driver)
2. I tried to disable Device Manager > Battery > something called battery control to solve ACPI.sys problem. And it worked, but my second monitor doesn’t work :/
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CONCLUSION
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Your system appears to be having trouble handling real-time audio and other tasks. You are likely to experience buffer underruns appearing as drop outs, clicks or pops. One or more DPC routines that belong to a driver running in your system appear to be executing for too long. One problem may be related to power management, disable CPU throttling settings in Control Panel and BIOS setup. Check for BIOS updates.
LatencyMon has been analyzing your system for 0:02:42 (h:mm:ss) on all processors.
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CPU SPEED
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Reported CPU speed: 2496 MHz
Note: reported execution times may be calculated based on a fixed reported CPU speed. Disable variable speed settings like Intel Speed Step and AMD Cool N Quiet in the BIOS setup for more accurate results.
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MEASURED INTERRUPT TO USER PROCESS LATENCIES
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The interrupt to process latency reflects the measured interval that a usermode process needed to respond to a hardware request from the moment the interrupt service routine started execution. This includes the scheduling and execution of a DPC routine, the signaling of an event and the waking up of a usermode thread from an idle wait state in response to that event.
Highest measured interrupt to process latency (µs): 3244,301037
Average measured interrupt to process latency (µs): 13,158952
Highest measured interrupt to DPC latency (µs): 3236,506182
Average measured interrupt to DPC latency (µs): 3,636769
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REPORTED ISRs
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Interrupt service routines are routines installed by the OS and device drivers that execute in response to a hardware interrupt signal.
Total time spent in ISRs (%) 0,012927
ISR count (execution time =4000 µs): 0
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REPORTED DPCs
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DPC routines are part of the interrupt servicing dispatch mechanism and disable the possibility for a process to utilize the CPU while it is interrupted until the DPC has finished execution.
Total time spent in DPCs (%) 0,422731
DPC count (execution time =4000 µs): 0
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REPORTED HARD PAGEFAULTS
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Hard pagefaults are events that get triggered by making use of virtual memory that is not resident in RAM but backed by a memory mapped file on disk. The process of resolving the hard pagefault requires reading in the memory from disk while the process is interrupted and blocked from execution.
NOTE: some processes were hit by hard pagefaults. If these were programs producing audio, they are likely to interrupt the audio stream resulting in dropouts, clicks and pops. Check the Processes tab to see which programs were hit.
Process with highest pagefault count: latmon.exe
Total number of hard pagefaults 598
Hard pagefault count of hardest hit process: 422
Number of processes hit: 15
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PER CPU DATA
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CPU 0 Interrupt cycle time (s): 10,463318
CPU 0 ISR highest execution time (µs): 491,963942
CPU 0 ISR total execution time (s): 0,078858
CPU 0 ISR count: 6069
CPU 0 DPC highest execution time (µs): 2323,189904
CPU 0 DPC total execution time (s): 2,611212
CPU 0 DPC count: 278151
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CPU 1 Interrupt cycle time (s): 2,031970
CPU 1 ISR highest execution time (µs): 90,870994
CPU 1 ISR total execution time (s): 0,003447
CPU 1 ISR count: 637
CPU 1 DPC highest execution time (µs): 413,272436
CPU 1 DPC total execution time (s): 0,070354
CPU 1 DPC count: 3115
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CPU 2 Interrupt cycle time (s): 2,661673
CPU 2 ISR highest execution time (µs): 22,421474
CPU 2 ISR total execution time (s): 0,001042
CPU 2 ISR count: 242
CPU 2 DPC highest execution time (µs): 279,509615
CPU 2 DPC total execution time (s): 0,021926
CPU 2 DPC count: 1688
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CPU 3 Interrupt cycle time (s): 2,487784
CPU 3 ISR highest execution time (µs): 3,746795
CPU 3 ISR total execution time (s): 0,000444
CPU 3 ISR count: 198
CPU 3 DPC highest execution time (µs): 409,529647
CPU 3 DPC total execution time (s): 0,036582
CPU 3 DPC count: 2471
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Driver file Description ISR count DPC count Highest execution (ms) Total execution (ms) Image base Image size Company Product Version Path
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Источник
Typically my computer averages somewhere in the low teen’s to low thirties according to Latencymon. However, I noticed recently that I’ve been getting massive spikes in latency related to dxgkrnl.sys and nvlddmkm.sys. My BIOS is updated to the most recent release and I’ve uninstalled all the useless bloatware that comes with Win 10 (Cortana, Game Bar etc..) Can anyone help me figure out what the issue is? Here’s the Latencymon breakdown from earlier today:
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CONCLUSION
_________________________________________________________________________________________________________
Your system appears to be having trouble handling real-time audio and other tasks. You are likely to experience buffer underruns appearing as drop outs, clicks or pops. One or more DPC routines that belong to a driver running in your system appear to be executing for too long. Also one or more ISR routines that belong to a driver running in your system appear to be executing for too long. One problem may be related to power management, disable CPU throttling settings in Control Panel and BIOS setup. Check for BIOS updates.
LatencyMon has been analyzing your system for 5:07:39 (h:mm:ss) on all processors.
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SYSTEM INFORMATION
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Computer name: MY-PC
OS version: Windows 10 , 10.0, build: 18363 (x64)
Hardware: ASUSTeK COMPUTER INC., Z170-A
CPU: GenuineIntel Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz
Logical processors: 8
Processor groups: 1
RAM: 16322 MB total
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CPU SPEED
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Reported CPU speed: 4008 MHz
Note: reported execution times may be calculated based on a fixed reported CPU speed. Disable variable speed settings like Intel Speed Step and AMD Cool N Quiet in the BIOS setup for more accurate results.
WARNING: the CPU speed that was measured is only a fraction of the CPU speed reported. Your CPUs may be throttled back due to variable speed settings and thermal issues. It is suggested that you run a utility which reports your actual CPU frequency and temperature.
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MEASURED INTERRUPT TO USER PROCESS LATENCIES
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The interrupt to process latency reflects the measured interval that a usermode process needed to respond to a hardware request from the moment the interrupt service routine started execution. This includes the scheduling and execution of a DPC routine, the signaling of an event and the waking up of a usermode thread from an idle wait state in response to that event.
Highest measured interrupt to process latency (µs): 2679.50
Average measured interrupt to process latency (µs): 2.151481
Highest measured interrupt to DPC latency (µs): 2675.0
Average measured interrupt to DPC latency (µs): 0.724937
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REPORTED ISRs
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Interrupt service routines are routines installed by the OS and device drivers that execute in response to a hardware interrupt signal.
Highest ISR routine execution time (µs): 1241.473802
Driver with highest ISR routine execution time: dxgkrnl.sys — DirectX Graphics Kernel, Microsoft Corporation
Highest reported total ISR routine time (%): 0.001431
Driver with highest ISR total time: dxgkrnl.sys — DirectX Graphics Kernel, Microsoft Corporation
Total time spent in ISRs (%) 0.001628
ISR count (execution time <250 µs): 111676
ISR count (execution time 250-500 µs): 0
ISR count (execution time 500-999 µs): 2824
ISR count (execution time 1000-1999 µs): 10
ISR count (execution time 2000-3999 µs): 0
ISR count (execution time >=4000 µs): 0
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REPORTED DPCs
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DPC routines are part of the interrupt servicing dispatch mechanism and disable the possibility for a process to utilize the CPU while it is interrupted until the DPC has finished execution.
Highest DPC routine execution time (µs): 3467.046906
Driver with highest DPC routine execution time: nvlddmkm.sys — NVIDIA Windows Kernel Mode Driver, Version 445.87 , NVIDIA Corporation
Highest reported total DPC routine time (%): 0.001196
Driver with highest DPC total execution time: iaStorA.sys — Intel(R) Rapid Storage Technology driver — x64, Intel Corporation
Total time spent in DPCs (%) 0.005295
DPC count (execution time <250 µs): 1519989
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-999 µs): 8426
DPC count (execution time 1000-1999 µs): 166
DPC count (execution time 2000-3999 µs): 37
DPC count (execution time >=4000 µs): 0
_________________________________________________________________________________________________________
REPORTED HARD PAGEFAULTS
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Hard pagefaults are events that get triggered by making use of virtual memory that is not resident in RAM but backed by a memory mapped file on disk. The process of resolving the hard pagefault requires reading in the memory from disk while the process is interrupted and blocked from execution.
NOTE: some processes were hit by hard pagefaults. If these were programs producing audio, they are likely to interrupt the audio stream resulting in dropouts, clicks and pops. Check the Processes tab to see which programs were hit.
Process with highest pagefault count: msmpeng.exe
Total number of hard pagefaults 36177
Hard pagefault count of hardest hit process: 20966
Number of processes hit: 28
_________________________________________________________________________________________________________
PER CPU DATA
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CPU 0 Interrupt cycle time (s): 226.784686
CPU 0 ISR highest execution time (µs): 1241.473802
CPU 0 ISR total execution time (s): 2.179280
CPU 0 ISR count: 113478
CPU 0 DPC highest execution time (µs): 3076.739521
CPU 0 DPC total execution time (s): 6.233969
CPU 0 DPC count: 1249865
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CPU 1 Interrupt cycle time (s): 240.373923
CPU 1 ISR highest execution time (µs): 882.187375
CPU 1 ISR total execution time (s): 0.224942
CPU 1 ISR count: 1032
CPU 1 DPC highest execution time (µs): 3467.046906
CPU 1 DPC total execution time (s): 1.214712
CPU 1 DPC count: 180483
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CPU 2 Interrupt cycle time (s): 200.412169
CPU 2 ISR highest execution time (µs): 0.0
CPU 2 ISR total execution time (s): 0.0
CPU 2 ISR count: 0
CPU 2 DPC highest execution time (µs): 624.690619
CPU 2 DPC total execution time (s): 0.118454
CPU 2 DPC count: 48920
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CPU 3 Interrupt cycle time (s): 216.404346
CPU 3 ISR highest execution time (µs): 0.0
CPU 3 ISR total execution time (s): 0.0
CPU 3 ISR count: 0
CPU 3 DPC highest execution time (µs): 606.038174
CPU 3 DPC total execution time (s): 0.032019
CPU 3 DPC count: 2455
_________________________________________________________________________________________________________
CPU 4 Interrupt cycle time (s): 200.096209
CPU 4 ISR highest execution time (µs): 0.0
CPU 4 ISR total execution time (s): 0.0
CPU 4 ISR count: 0
CPU 4 DPC highest execution time (µs): 419.529691
CPU 4 DPC total execution time (s): 0.061491
CPU 4 DPC count: 18421
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CPU 5 Interrupt cycle time (s): 242.843178
CPU 5 ISR highest execution time (µs): 0.0
CPU 5 ISR total execution time (s): 0.0
CPU 5 ISR count: 0
CPU 5 DPC highest execution time (µs): 454.436627
CPU 5 DPC total execution time (s): 0.027757
CPU 5 DPC count: 4247
_________________________________________________________________________________________________________
CPU 6 Interrupt cycle time (s): 210.318140
CPU 6 ISR highest execution time (µs): 0.0
CPU 6 ISR total execution time (s): 0.0
CPU 6 ISR count: 0
CPU 6 DPC highest execution time (µs): 796.492016
CPU 6 DPC total execution time (s): 0.066206
CPU 6 DPC count: 20103
_________________________________________________________________________________________________________
CPU 7 Interrupt cycle time (s): 236.110250
CPU 7 ISR highest execution time (µs): 0.0
CPU 7 ISR total execution time (s): 0.0
CPU 7 ISR count: 0
CPU 7 DPC highest execution time (µs): 620.879990
CPU 7 DPC total execution time (s): 0.065337
CPU 7 DPC count: 4124
_________________________________________________________________________________________________________
Куратор(ы):
eLfiK
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Member Статус: Не в сети |
Обсуждение проблем ОС и оборудования: задержка реакции системы (latency), микроcтаттер, инпутлаг, фризы. Осуществлять мониторинг программой Latency Monitor нужно в течение 1 минуты, в состоянии простоя системы т.е. без дисковой, сетевой активности, и любой другой, с выключенным ав и приложениями в трее и автозагрузке, Презентация NVIDIA (на англ.) о проблемах статтеров, фризов и лагов (терминология, описание и причины возникновения) Последний раз редактировалось iG0Lka 07.02.2018 15:48, всего редактировалось 8 раз(а). |
Добавлено: 12.10.2016 12:14 | Реклама | |
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Agiliter |
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Member Статус: Не в сети |
Peatprey писал(а): Скорее всего бракованный процессор попался. В этой теме одна история лучше другой. Это теоретически может произойти только на USB который прямо в цп идёт и лечиться установкой в чипсетный порт. Это при условии что у вас в цп вообще есть «прямые» порты. |
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JohnnyCerezo |
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Member Статус: Не в сети |
Не шарю в этой теме. Что скажете? #77 stats _________________________________________________________________________________________________________ _________________________________________________________________________________________________________ _________________________________________________________________________________________________________ Note: reported execution times may be calculated based on a fixed reported CPU speed. Disable variable speed settings like Intel Speed Step and AMD Cool N Quiet in the BIOS setup for more accurate results. _________________________________________________________________________________________________________ Highest measured interrupt to process latency (µs): 191,70 Highest measured interrupt to DPC latency (µs): 155,50 _________________________________________________________________________________________________________ Highest ISR routine execution time (µs): 393,888889 Highest reported total ISR routine time (%): 0,051636 Total time spent in ISRs (%) 0,068727 ISR count (execution time <250 µs): 119735 _________________________________________________________________________________________________________ Highest DPC routine execution time (µs): 500,205247 Highest reported total DPC routine time (%): 0,020326 Total time spent in DPCs (%) 0,063389 DPC count (execution time <250 µs): 180845 _________________________________________________________________________________________________________ NOTE: some processes were hit by hard pagefaults. If these were programs producing audio, they are likely to interrupt the audio stream resulting in dropouts, clicks and pops. Check the Processes tab to see which programs were hit. Process with highest pagefault count: svchost.exe Total number of hard pagefaults 1085 _________________________________________________________________________________________________________ Добавлено спустя 30 минут 16 секунд: Stats _________________________________________________________________________________________________________ _________________________________________________________________________________________________________ _________________________________________________________________________________________________________ Note: reported execution times may be calculated based on a fixed reported CPU speed. Disable variable speed settings like Intel Speed Step and AMD Cool N Quiet in the BIOS setup for more accurate results. _________________________________________________________________________________________________________ Highest measured interrupt to process latency (µs): 661,90 Highest measured interrupt to DPC latency (µs): 637,90 _________________________________________________________________________________________________________ Highest ISR routine execution time (µs): 565,148920 Highest reported total ISR routine time (%): 0,170947 Total time spent in ISRs (%) 0,224767 ISR count (execution time <250 µs): 924496 _________________________________________________________________________________________________________ Highest DPC routine execution time (µs): 807,823302 Highest reported total DPC routine time (%): 0,095723 Total time spent in DPCs (%) 0,166956 DPC count (execution time <250 µs): 1108421 _________________________________________________________________________________________________________ NOTE: some processes were hit by hard pagefaults. If these were programs producing audio, they are likely to interrupt the audio stream resulting in dropouts, clicks and pops. Check the Processes tab to see which programs were hit. Process with highest pagefault count: nvidia share.exe Total number of hard pagefaults 9697 _________________________________________________________________________________________________________ Какие очень высокие задержки. Что делать?
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wegwryd |
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Junior Статус: Не в сети |
Здравствуйте. Периодически, независимо от выполняемых задач появляются фризы с искажением звука на 2-3 секунды. Это может происходить как в играх, так и в браузере. Сегодня, например, этого не было. Вложение:
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Agiliter |
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Member Статус: Не в сети |
JohnnyCerezo писал(а): Какие очень высокие задержки. Что делать? Ничего не делать. Ничего критичного со стороны драйвера нет. Добавлено спустя 1 минуту 33 секунды: wegwryd писал(а): GIGABYTE GTX 1660 Ti GAMING OC В журнале нет сообщений о сбое драйвера? |
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wegwryd |
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Junior Статус: Не в сети |
Agiliter писал(а): В журнале нет сообщений о сбое драйвера? Ошибок нет, проблемы связанны с видеокартой? |
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BOBKOC |
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Member Статус: Не в сети |
wegwryd писал(а): проблемы связанны с видеокартой? для начала отруби(в диспетчере устройств ->системные устройства->контроллер High Def Audio) все лишние не пользуемые аудиодевайсы(встроенный звук+тот что на видюхе) или разберись с их прерываниями Windows 10 подвисание, треск звука #17292078 , чтоб они не делили апельсин ещё с кем нить |
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Agiliter |
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Member Статус: Не в сети |
wegwryd писал(а): Ошибок нет, проблемы связанны с видеокартой? Невозможно определить. На графике 2-3 секундные искажения не могли быть вызваны драйвером карты. |
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wegwryd |
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Junior Статус: Не в сети |
BOBKOC писал(а): для начала отруби(в диспетчере устройств ->системные устройства->контроллер High Def Audio) все лишние не пользуемые аудиодевайсы(встроенный звук+тот что на видюхе) или разберись с их прерываниями Windows 10 подвисание, треск звука #17292078 , чтоб они не делили апельсин ещё с кем нить Вложение:
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BOBKOC |
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Member Статус: Не в сети |
на данный момент, картинка ничего криминального не выдаёт. Соотв, если проблема не ушла, то зуковуху можно попробовать в мси режим&high перевести и поглядеть(но может стать и херовее, тогда в обратку |
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iG0Lka |
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Advanced member Статус: Не в сети |
wegwryd это какая версия? ссылка есть на неё? |
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OLD Hunter |
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Member Статус: Не в сети |
Peatprey писал(а): В случае когда пк полностью исправен, как у Zigi_Hate, проблема с регой урона/плавающей мышью/ киселем и т.п. может быть только из-за провайдера. Даже на хороших провайдерах бывает, что сеть внутри конкретного дома нестабильна. Тут может помочь смена провайдера или переезд. Проверил на своем компе. У меня дома есть проблема, у моей родственницы нет. Ну явно электричество или отсутствие ИБП. Шапочку из фольги надеть нужно, когда такую чушь читаешь. Сколько же откровенно глупых советов в интернете увидел в поисках информации. Нет, дело не в провайдере, а конкретно в доме. И да, дело либо в эл-ве, либо внешних эми помехах. В таких домах сам комп так работает, что видимо не может правильно и стабильно генерировать сетевые пакеты. Вон человек на ютубе все проверил. Он менял всех провайдеров, пробовал мобильный инет — везде одинаково. Он даже в соседний дом(где нет проблемы) протягивал свой кабель инета и там все работает нормально. Как выход для себя он нашел облачный(удаленный) гейминг. Поставил второй свой пк в дата центре и играет без проблем. Платит около 7к в месяц за такое удовольствие(Ну и пк пришлось второй собирать, дорогой, с RTX) |
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andrewzaraki |
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Junior Статус: Не в сети |
Здравствуйте. Опишу проблему как смогу. Windows 10. SSD, 1050ti 4gb. 16 gb RAM. Intel celeron 4 ядра 2.6GHz Последний раз редактировалось andrewzaraki 25.01.2022 19:55, всего редактировалось 2 раз(а). |
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VictoR_VK |
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Member Статус: Не в сети |
andrewzaraki писал(а): Может поможет кто буду признателен. Что за винда? Каков состав железа то? Тут дипломированных гадателей на кофейной гуще нет. |
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BOBKOC |
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Member Статус: Не в сети |
andrewzaraki писал(а): Может поможет кто буду признателен файл подкачки не отключай для начала + чтоб ему место на диске было |
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andrewzaraki |
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Junior Статус: Не в сети |
BOBKOC писал(а): файл подкачки не отключай для начала + чтоб ему место на диске было спасибо за ответ. оперативная память не загружена на максимум + у меня SSD. проблема может возникнуть в рандомный момент времени при использовании компьютера на средней нагрузке. |
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Agiliter |
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Member Статус: Не в сети |
andrewzaraki |
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GameBotOff |
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Junior Статус: Не в сети |
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GameBotOff писал(а): Статтерит в основном в старых однопоточных играх (кс) и во время просмотра видео, никаких потрескиваний/пощелкиваний и прочих дефектов звука нет, ничего из железа не троттлит. Так в чем выражаются микрофризы? В резком замирании картинки на пару секунд или просто отсутствует плавность (нестабильный ФПС?) в играх? GameBotOff На чистой Windows с установленными драйверами тоже фризит? |
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Windows 10: nvlddmkm.sys, dxgkrnl, etc Latency Issues
Discus and support nvlddmkm.sys, dxgkrnl, etc Latency Issues in Windows 10 Performance & Maintenance to solve the problem; Greetings, everyone. For the past few months, Ive suffered from stutters/micro stutters and for the life of me I cannot find a solution. My specs are…
Discussion in ‘Windows 10 Performance & Maintenance’ started by ScottyYDG, May 30, 2021.
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nvlddmkm.sys, dxgkrnl, etc Latency Issues
Greetings, everyone. For the past few months, Ive suffered from stutters/micro stutters and for the life of me I cannot find a solution. My specs are the following: AMD Ryzen 5950X [Stock] Nvidia RTX 3080 FTW 3 Ultra [Stock] 4x 8GB 3200MHZ DDR4 TridentZ MSI X570 Tomahawk WiFi 1x Samsung 2.5 1TB SATA SSD 1x 2TB Seagate HDD 1x 6TB WD HDD EVGA 750W Gold 80+ PSU I would have just posted a speccy, but it seems to not like my CPU too much for whatever reason. Anyways, I have scoured these forums, guru3d, sysnav, and Reddit to try and get to the bottom, trying everything from setting PCIe to Gen3, updating and rolling back every driver that seems to even remotely cause an issue, and I even tried going through traces in WPA, which was wayyyy over my head. I am hoping someone has an idea of some kind, as Im getting desperate. Here below is my most recent LatencyMon, and below it I will try to include a trace. ____________________________________________________________________________________________________ _____ CONCLUSION ____________________________________________________________________________________________________ _____ Your system appears to be having trouble handling real-time audio and other tasks. You are likely to experience buffer underruns appearing as drop outs, clicks or pops. One or more DPC routines that belong to a driver running in your system appear to be executing for too long. One problem may be related to power management, disable CPU throttling settings in Control Panel and BIOS setup. Check for BIOS updates. LatencyMon has been analyzing your system for 1:12:21 (h:mm:ss) on all processors. ____________________________________________________________________________________________________ _____ SYSTEM INFORMATION ____________________________________________________________________________________________________ _____ Computer name: DESKTOP-3IMK363 OS version: Windows 10, 10.0, version 2009, build: 19043 (x64) Hardware: MS-7C84, Micro-Star International Co., Ltd. CPU: AuthenticAMD AMD Ryzen 9 5950X 16-Core Processor Logical processors: 32 Processor groups: 1 RAM: 32692 MB total ____________________________________________________________________________________________________ _____ CPU SPEED ____________________________________________________________________________________________________ _____ Reported CPU speed: 340 MHz Note: reported execution times may be calculated based on a fixed reported CPU speed. Disable variable speed settings like Intel Speed Step and AMD Cool N Quiet in the BIOS setup for more accurate results. ____________________________________________________________________________________________________ _____ MEASURED INTERRUPT TO USER PROCESS LATENCIES ____________________________________________________________________________________________________ _____ The interrupt to process latency reflects the measured interval that a usermode process needed to respond to a hardware request from the moment the interrupt service routine started execution. This includes the scheduling and execution of a DPC routine, the signaling of an event and the waking up of a usermode thread from an idle wait state in response to that event. Highest measured interrupt to process latency (s): 497.30 Average measured interrupt to process latency (s): 5.567518 Highest measured interrupt to DPC latency (s): 491.20 Average measured interrupt to DPC latency (s): 1.555345 ____________________________________________________________________________________________________ _____ REPORTED ISRs ____________________________________________________________________________________________________ _____ Interrupt service routines are routines installed by the OS and device drivers that execute in response to a hardware interrupt signal. Highest ISR routine execution time (s): 171.810 Driver with highest ISR routine execution time: HDAudBus.sys — High Definition Audio Bus Driver, Microsoft Corporation Highest reported total ISR routine time (%): 0.000036 Driver with highest ISR total time: Wdf01000.sys — Kernel Mode Driver Framework Runtime, Microsoft Corporation Total time spent in ISRs (%) 0.000042 ISR count (execution time <250 s): 119870 ISR count (execution time 250-500 s): 0 ISR count (execution time 500-1000 s): 0 ISR count (execution time 1000-2000 s): 0 ISR count (execution time 2000-4000 s): 0 ISR count (execution time >=4000 s): 0 ____________________________________________________________________________________________________ _____ REPORTED DPCs ____________________________________________________________________________________________________ _____ DPC routines are part of the interrupt servicing dispatch mechanism and disable the possibility for a process to utilize the CPU while it is interrupted until the DPC has finished execution. Highest DPC routine execution time (s): 3400.510 Driver with highest DPC routine execution time: nvlddmkm.sys — NVIDIA Windows Kernel Mode Driver, Version 456.71 , NVIDIA Corporation Highest reported total DPC routine time (%): 0.001298 Driver with highest DPC total execution time: afd.sys — Ancillary Function Driver for WinSock, Microsoft Corporation Total time spent in DPCs (%) 0.004881 DPC count (execution time <250 s): 2403095 DPC count (execution time 250-500 s): 0 DPC count (execution time 500-10000 s): 34 DPC count (execution time 1000-2000 s): 0 DPC count (execution time 2000-4000 s): 3 DPC count (execution time >=4000 s): 0 ____________________________________________________________________________________________________ _____ REPORTED HARD PAGEFAULTS ____________________________________________________________________________________________________ _____ Hard pagefaults are events that get triggered by making use of virtual memory that is not resident in RAM but backed by a memory mapped file on disk. The process of resolving the hard pagefault requires reading in the memory from disk while the process is interrupted and blocked from execution. NOTE: some processes were hit by hard pagefaults. If these were programs producing audio, they are likely to interrupt the audio stream resulting in dropouts, clicks and pops. Check the Processes tab to see which programs were hit. Process with highest pagefault count: svchost.exe Total number of hard pagefaults 581 Hard pagefault count of hardest hit process: 212 Number of processes hit: 27 ____________________________________________________________________________________________________ _____ PER CPU DATA ____________________________________________________________________________________________________ _____ CPU 0 Interrupt cycle time (s): 11.063476 CPU 0 ISR highest execution time (s): 6.630 CPU 0 ISR total execution time (s): 0.000293 CPU 0 ISR count: 123 CPU 0 DPC highest execution time (s): 94.590 CPU 0 DPC total execution time (s): 0.314120 CPU 0 DPC count: 163394 ____________________________________________________________________________________________________ _____ CPU 1 Interrupt cycle time (s): 6.422759 CPU 1 ISR highest execution time (s): 8.950 CPU 1 ISR total execution time (s): 0.000130 CPU 1 ISR count: 34 CPU 1 DPC highest execution time (s): 55.20 CPU 1 DPC total execution time (s): 0.005305 CPU 1 DPC count: 2142 ____________________________________________________________________________________________________ _____ CPU 2 Interrupt cycle time (s): 10.237052 CPU 2 ISR highest execution time (s): 27.430 CPU 2 ISR total execution time (s): 0.002278 CPU 2 ISR count: 818 CPU 2 DPC highest execution time (s): 455.590 CPU 2 DPC total execution time (s): 0.286156 CPU 2 DPC count: 56900 ____________________________________________________________________________________________________ _____ CPU 3 Interrupt cycle time (s): 8.010791 CPU 3 ISR highest execution time (s): 171.810 CPU 3 ISR total execution time (s): 0.007589 CPU 3 ISR count: 2783 CPU 3 DPC highest execution time (s): 496.620 CPU 3 DPC total execution time (s): 0.174920 CPU 3 DPC count: 74074 ____________________________________________________________________________________________________ _____ CPU 4 Interrupt cycle time (s): 7.257983 CPU 4 ISR highest execution time (s): 2.650 CPU 4 ISR total execution time (s): 0.000099 CPU 4 ISR count: 131 CPU 4 DPC highest execution time (s): 111.470 CPU 4 DPC total execution time (s): 0.034346 CPU 4 DPC count: 17773 ____________________________________________________________________________________________________ _____ CPU 5 Interrupt cycle time (s): 7.034823 CPU 5 ISR highest execution time (s): 1.470 CPU 5 ISR total execution time (s): 0.000007 CPU 5 ISR count: 8 CPU 5 DPC highest execution time (s): 52.610 CPU 5 DPC total execution time (s): 0.008519 CPU 5 DPC count: 5096 ____________________________________________________________________________________________________ _____ CPU 6 Interrupt cycle time (s): 8.447246 CPU 6 ISR highest execution time (s): 4.060 CPU 6 ISR total execution time (s): 0.000771 CPU 6 ISR count: 927 CPU 6 DPC highest execution time (s): 494.140 CPU 6 DPC total execution time (s): 0.309142 CPU 6 DPC count: 53809 ____________________________________________________________________________________________________ _____ CPU 7 Interrupt cycle time (s): 7.490877 CPU 7 ISR highest execution time (s): 5.890 CPU 7 ISR total execution time (s): 0.000755 CPU 7 ISR count: 910 CPU 7 DPC highest execution time (s): 107.310 CPU 7 DPC total execution time (s): 0.122825 CPU 7 DPC count: 34325 ____________________________________________________________________________________________________ _____ CPU 8 Interrupt cycle time (s): 9.712983 CPU 8 ISR highest execution time (s): 3.260 CPU 8 ISR total execution time (s): 0.000652 CPU 8 ISR count: 853 CPU 8 DPC highest execution time (s): 736.670 CPU 8 DPC total execution time (s): 0.090472 CPU 8 DPC count: 36438 ____________________________________________________________________________________________________ _____ CPU 9 Interrupt cycle time (s): 11.022269 CPU 9 ISR highest execution time (s): 3.0 CPU 9 ISR total execution time (s): 0.000612 CPU 9 ISR count: 1035 CPU 9 DPC highest execution time (s): 3400.510 CPU 9 DPC total execution time (s): 0.143604 CPU 9 DPC count: 66613 ____________________________________________________________________________________________________ _____ CPU 10 Interrupt cycle time (s): 18.110295 CPU 10 ISR highest execution time (s): 7.260 CPU 10 ISR total execution time (s): 0.003473 CPU 10 ISR count: 7432 CPU 10 DPC highest execution time (s): 3396.390 CPU 10 DPC total execution time (s): 0.422796 CPU 10 DPC count: 131116 ____________________________________________________________________________________________________ _____ CPU 11 Interrupt cycle time (s): 44.335364 CPU 11 ISR highest execution time (s): 6.680 CPU 11 ISR total execution time (s): 0.031564 CPU 11 ISR count: 82884 CPU 11 DPC highest execution time (s): 3337.850 CPU 11 DPC total execution time (s): 3.472098 CPU 11 DPC count: 773806 ____________________________________________________________________________________________________ _____ CPU 12 Interrupt cycle time (s): 6.447224 CPU 12 ISR highest execution time (s): 1.830 CPU 12 ISR total execution time (s): 0.000109 CPU 12 ISR count: 245 CPU 12 DPC highest execution time (s): 126.960 CPU 12 DPC total execution time (s): 0.021659 CPU 12 DPC count: 12051 ____________________________________________________________________________________________________ _____ CPU 13 Interrupt cycle time (s): 6.251364 CPU 13 ISR highest execution time (s): 0.980 CPU 13 ISR total execution time (s): 0.000007 CPU 13 ISR count: 11 CPU 13 DPC highest execution time (s): 74.180 CPU 13 DPC total execution time (s): 0.004229 CPU 13 DPC count: 2453 ____________________________________________________________________________________________________ _____ CPU 14 Interrupt cycle time (s): 5.656017 CPU 14 ISR highest execution time (s): 1.20 CPU 14 ISR total execution time (s): 0.000037 CPU 14 ISR count: 77 CPU 14 DPC highest execution time (s): 95.590 CPU 14 DPC total execution time (s): 0.027607 CPU 14 DPC count: 15987 ____________________________________________________________________________________________________ _____ CPU 15 Interrupt cycle time (s): 6.592568 CPU 15 ISR highest execution time (s): 1.570 CPU 15 ISR total execution time (s): 0.000020 CPU 15 ISR count: 40 CPU 15 DPC highest execution time (s): 100.660 CPU 15 DPC total execution time (s): 0.021420 CPU 15 DPC count: 12825 ____________________________________________________________________________________________________ _____ CPU 16 Interrupt cycle time (s): 6.095627 CPU 16 ISR highest execution time (s): 1.070 CPU 16 ISR total execution time (s): 0.000082 CPU 16 ISR count: 101 CPU 16 DPC highest execution time (s): 87.370 CPU 16 DPC total execution time (s): 0.011375 CPU 16 DPC count: 10246 ____________________________________________________________________________________________________ _____ CPU 17 Interrupt cycle time (s): 5.997298 CPU 17 ISR highest execution time (s): 1.770 CPU 17 ISR total execution time (s): 0.000049 CPU 17 ISR count: 80 CPU 17 DPC highest execution time (s): 111.840 CPU 17 DPC total execution time (s): 0.011327 CPU 17 DPC count: 10100 ____________________________________________________________________________________________________ _____ CPU 18 Interrupt cycle time (s): 8.163705 CPU 18 ISR highest execution time (s): 6.220 CPU 18 ISR total execution time (s): 0.001926 CPU 18 ISR count: 3645 CPU 18 DPC highest execution time (s): 451.10 CPU 18 DPC total execution time (s): 0.080026 CPU 18 DPC count: 61662 ____________________________________________________________________________________________________ _____ CPU 19 Interrupt cycle time (s): 9.159196 CPU 19 ISR highest execution time (s): 5.820 CPU 19 ISR total execution time (s): 0.003303 CPU 19 ISR count: 7785 CPU 19 DPC highest execution time (s): 108.240 CPU 19 DPC total execution time (s): 0.129551 CPU 19 DPC count: 100342 ____________________________________________________________________________________________________ _____ CPU 20 Interrupt cycle time (s): 11.391695 CPU 20 ISR highest execution time (s): 4.490 CPU 20 ISR total execution time (s): 0.001113 CPU 20 ISR count: 1356 CPU 20 DPC highest execution time (s): 104.950 CPU 20 DPC total execution time (s): 0.177056 CPU 20 DPC count: 64722 ____________________________________________________________________________________________________ _____ CPU 21 Interrupt cycle time (s): 11.936780 CPU 21 ISR highest execution time (s): 1.770 CPU 21 ISR total execution time (s): 0.000174 CPU 21 ISR count: 209 CPU 21 DPC highest execution time (s): 258.210 CPU 21 DPC total execution time (s): 0.140646 CPU 21 DPC count: 52441 ____________________________________________________________________________________________________ _____ CPU 22 Interrupt cycle time (s): 6.171439 CPU 22 ISR highest execution time (s): 1.630 CPU 22 ISR total execution time (s): 0.000006 CPU 22 ISR count: 7 CPU 22 DPC highest execution time (s): 84.160 CPU 22 DPC total execution time (s): 0.010407 CPU 22 DPC count: 9651 ____________________________________________________________________________________________________ _____ CPU 23 Interrupt cycle time (s): 6.308361 CPU 23 ISR highest execution time (s): 1.630 CPU 23 ISR total execution time (s): 0.000036 CPU 23 ISR count: 49 CPU 23 DPC highest execution time (s): 107.860 CPU 23 DPC total execution time (s): 0.015672 CPU 23 DPC count: 14549 ____________________________________________________________________________________________________ _____ CPU 24 Interrupt cycle time (s): 6.803407 CPU 24 ISR highest execution time (s): 1.30 CPU 24 ISR total execution time (s): 0.000062 CPU 24 ISR count: 92 CPU 24 DPC highest execution time (s): 104.050 CPU 24 DPC total execution time (s): 0.034354 CPU 24 DPC count: 31572 ____________________________________________________________________________________________________ _____ CPU 25 Interrupt cycle time (s): 7.721994 CPU 25 ISR highest execution time (s): 3.40 CPU 25 ISR total execution time (s): 0.000113 CPU 25 ISR count: 178 CPU 25 DPC highest execution time (s): 105.980 CPU 25 DPC total execution time (s): 0.063375 CPU 25 DPC count: 59543 ____________________________________________________________________________________________________ _____ CPU 26 Interrupt cycle time (s): 8.565343 CPU 26 ISR highest execution time (s): 2.260 CPU 26 ISR total execution time (s): 0.000317 CPU 26 ISR count: 652 CPU 26 DPC highest execution time (s): 120.580 CPU 26 DPC total execution time (s): 0.097797 CPU 26 DPC count: 88653 ____________________________________________________________________________________________________ _____ CPU 27 Interrupt cycle time (s): 15.792242 CPU 27 ISR highest execution time (s): 4.610 CPU 27 ISR total execution time (s): 0.002815 CPU 27 ISR count: 6941 CPU 27 DPC highest execution time (s): 478.440 CPU 27 DPC total execution time (s): 0.460518 CPU 27 DPC count: 387283 ____________________________________________________________________________________________________ _____ CPU 28 Interrupt cycle time (s): 6.720471 CPU 28 ISR highest execution time (s): 2.870 CPU 28 ISR total execution time (s): 0.000091 CPU 28 ISR count: 125 CPU 28 DPC highest execution time (s): 101.320 CPU 28 DPC total execution time (s): 0.018795 CPU 28 DPC count: 16504 ____________________________________________________________________________________________________ _____ CPU 29 Interrupt cycle time (s): 6.446847 CPU 29 ISR highest execution time (s): 1.070 CPU 29 ISR total execution time (s): 0.000009 CPU 29 ISR count: 11 CPU 29 DPC highest execution time (s): 111.580 CPU 29 DPC total execution time (s): 0.017230 CPU 29 DPC count: 16114 ____________________________________________________________________________________________________ _____ CPU 30 Interrupt cycle time (s): 8.738726 CPU 30 ISR highest execution time (s): 2.120 CPU 30 ISR total execution time (s): 0.000178 CPU 30 ISR count: 223 CPU 30 DPC highest execution time (s): 456.840 CPU 30 DPC total execution time (s): 0.037440 CPU 30 DPC count: 12142 ____________________________________________________________________________________________________ _____ CPU 31 Interrupt cycle time (s): 7.700054 CPU 31 ISR highest execution time (s): 1.440 CPU 31 ISR total execution time (s): 0.000069 CPU 31 ISR count: 105 CPU 31 DPC highest execution time (s): 108.660 CPU 31 DPC total execution time (s): 0.015769 CPU 31 DPC count: 8806 ____________________________________________________________________________________________________ _____ Trace(700mb): Microsoft OneDrive — Access files anywhere. 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DPC Latency problem (Storport.sys, nvlddmkm.sys, dxgkrnl.sys, etc.)
Hi,
For me those DPCs are originated by the Intel Intel(R) Serial IO GPIO Driver.
The DPC and ISR graph shows a lot of those DPCs spikes.
It seems that your driver is outdated (ver 30.100.1816.3 released on April 2018).
A newer version is available on the Dell Website for your computer model.
Update this driver and see if it helps.
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DPC Latency problem (Storport.sys, nvlddmkm.sys, dxgkrnl.sys, etc.) I tried the driver and it seems to have helped a little bit but I haven’t been able to test it out fully. However, due to other issues, like temperature when gaming, Dell will pick it up tomorrow to fix these issues. I doubt that it will help that much, but what can you do?
Once I receive the repaired laptop, I will check again! Hopefully they check this issue but I doubt they can fix it..
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nvlddmkm.sys, dxgkrnl, etc Latency Issues
DPC Latency problem (Storport.sys, nvlddmkm.sys, dxgkrnl.sys, etc.)
Hi,
Usually, latencies are related to outdated or low performing driver.
Have you made an update to all your drivers? not only video and audio drivers.you can use a tool like »Driver Easy » to identify drivers that need an update.
If you have tried all this stuff, you can record a trace with the Windows performance tool kit.
Here is a tutorial on how to download and use this tool:How To Record Windows Boot Trace Using Windows Performance Recorder (WPR) — ZineTekWhat you need to do after installing the tool, is to run Windows performance recorder with the following parameters and reproduce the issue:
![nvlddmkm.sys, dxgkrnl, etc Latency Issues [IMG]](https://www.windowsphoneinfo.com/threads/nvlddmkm-sys-dxgkrnl-etc-latency-issues.557565/proxy.php?image=https%3A%2F%2Fwww.tenforums.com%2Fattachments%2Fperformance-maintenance%2F301731d1602624182t-dpc-latency-problem-storport-sys-nvlddmkm-sys-dxgkrnl-sys-etc-capture.png&hash=421a57fe83f3e30fd1f619eb3bb5a1ac "nvlddmkm.sys, dxgkrnl, etc Latency Issues")
![nvlddmkm.sys, dxgkrnl, etc Latency Issues [IMG]](https://www.windowsphoneinfo.com/threads/nvlddmkm-sys-dxgkrnl-etc-latency-issues.557565/proxy.php?image=https%3A%2F%2Fwww.tenforums.com%2Fattachments%2Fperformance-maintenance%2F301732d1602624216t-dpc-latency-problem-storport-sys-nvlddmkm-sys-dxgkrnl-sys-etc-capture1.png&hash=ccf21dac7b367949bffacee9f1eb3f43 "nvlddmkm.sys, dxgkrnl, etc Latency Issues")
![nvlddmkm.sys, dxgkrnl, etc Latency Issues [IMG]](https://www.windowsphoneinfo.com/threads/nvlddmkm-sys-dxgkrnl-etc-latency-issues.557565/proxy.php?image=https%3A%2F%2Fwww.tenforums.com%2Fattachments%2Fperformance-maintenance%2F301733d1602624262t-dpc-latency-problem-storport-sys-nvlddmkm-sys-dxgkrnl-sys-etc-capture2.png&hash=1722af3f4f6689be7cbb315edd4ee459 "nvlddmkm.sys, dxgkrnl, etc Latency Issues")
![nvlddmkm.sys, dxgkrnl, etc Latency Issues [IMG]](https://www.windowsphoneinfo.com/threads/nvlddmkm-sys-dxgkrnl-etc-latency-issues.557565/proxy.php?image=https%3A%2F%2Fwww.tenforums.com%2Fattachments%2Fperformance-maintenance%2F300920d1602183478t-dpc-latency-problem-storport-sys-nvlddmkm-sys-dxgkrnl-sys-etc-capture.png&hash=c25e60881d1e4fb76ec9b4a187151e44 "nvlddmkm.sys, dxgkrnl, etc Latency Issues")
![nvlddmkm.sys, dxgkrnl, etc Latency Issues [IMG]](https://www.windowsphoneinfo.com/threads/nvlddmkm-sys-dxgkrnl-etc-latency-issues.557565/proxy.php?image=https%3A%2F%2Fwww.tenforums.com%2Fattachments%2Fperformance-maintenance%2F300921d1602183498t-dpc-latency-problem-storport-sys-nvlddmkm-sys-dxgkrnl-sys-etc-capture1.png&hash=23578299376a5a88b2c9e625be19b0fd "nvlddmkm.sys, dxgkrnl, etc Latency Issues")
nvlddmkm.sys, dxgkrnl, etc Latency Issues
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Very High Latency issues caused by ndis.sys, Wdf01000.sys and dxgkrnl.sys: [ATTACH][ATTACH]
This is my LatencyMon Log
_________________________________________________________________________________________________________
CONCLUSION
_________________________________________________________________________________________________________
Your…
