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

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

0 comments

68 answers

Sort by: Oldest
Most helpful Newest Oldest
  1. Anonymous
    2019-07-21T11:16:57+00:00

    Hello,

    Can we expect information from Microsoft ? This latency problem brings by 1903 is not enouth important to have some quick action for your customers ?

    Was this answer helpful?

    0 comments
  2. Anonymous
    2019-07-23T01:04:31+00:00

    See this GearSlutz thread - they are working on a fix and it is in the fast-lane.

    https://www.gearslutz.com/board/showpost.php?p=14081809&postcount=238

    Terry

    Was this answer helpful?

    0 comments
  3. Anonymous
    2019-07-27T16:29:59+00:00

    See this GearSlutz thread - they are working on a fix and it is in the fast-lane.

    https://www.gearslutz.com/board/showpost.php?p=14081809&postcount=238

    Terry

    Yes! Some initial tests show a significant improvement with the latest patch:

    https://support.microsoft.com/en-us/help/4505903/windows-10-update-kb4505903

    I highly recommend testing it out for confirmation.

    Cheers,

    Howie

    Was this answer helpful?

    0 comments
  4. Anonymous
    2019-07-27T19:58:24+00:00

    Tested  on one of my comnputers that was affected and getting good results after update kb4505903.

    Was this answer helpful?

    0 comments
  5. Anonymous
    2019-07-27T20:52:00+00:00

    Improved but not fixed.  1903 18362.267 build.

    Test running only for 10min. without any intensive workload, just watching a video.

    Was this answer helpful?

    0 comments