Windows 10 v1903 - ntoskrnl.exe & ISR/DPC latency spikes

Anonymous
2019-05-31T18:33:50+00:00

Hi,

After updating to 1903 LatencyMon associates ntoskrnl.exe with large latency spikes on the order of ~1,300µs. Same results with KB4497935.

I posted here too as I thought it could be related to the GPU driver:

https://forums.geforce.com/default/topic/1120890/geforce-drivers/win10-ver-1903-ntoskrnl-exe-large-latency-spikes-/

Others are also reporting similar symptoms. E.g. in some instances this results in noticeable audio clicks/pops.

https://www.reddit.com/r/Windows10/comments/bu34xv/update_1903_high_dpc_latency_issues/

Are you seeing similar results?

Does anyone at Microsoft acknowledge this?

It should be easily reproducible.

Thanks,

Howard

SOLUTION:

KB4505903 seems to have significantly mitigated the ntoskrnl.exe latency spikes for many users.

Windows for home | Windows 10 | Performance and system failures

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  1. Anonymous
    2019-06-25T17:42:35+00:00

    Unfortunately I do not have a solution, but can report that I have the exact same problem with DPC latency spikes caused by ntoskrnl.exe after upgrading to 1903. All drivers and BIOS are up to date (even reinstalled to see if this would help, but did not). Will be rolling back.

    I wonder if the problem is solved now.

    I am also experiencing the same problem.

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  3. Anonymous
    2019-06-16T19:00:26+00:00

    Hey, thanks for the help. But I found another solution! On the sysadmin subreddit someone posted a tool to download previous versions directly from Microsoft servers! Now I got the 1803 and 1809, it's gonna be a long day tomorrow but I won't have to deal with these annoying bugs from 1903 at least!

    Cheers and good luck everyone!

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  4. Anonymous
    2019-06-16T18:23:56+00:00

    Oldest one they seem to provide is 1809 if you spoof your brower's user agent (otherwise you can only get 1903). 1809 seems fairly mature at this point so it might be a good alternative to 1803.

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  5. Anonymous
    2019-06-16T18:10:02+00:00

    Hey guys I would love to go back to 1803. I have two computers, one is on 1803 and the one I'm using currently on 1903. I didn't have a choice when I switched to 1903 because I had a problem with my MBR and I couldn't even do anything to repair it and roll back to a previous save/restore point.

    But obviously Microsoft official website doesn't give you an image for Win 10 1803, so where can I get one?

    Thanks!

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