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.

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  1. Anonymous
    2019-06-01T11:39:32+00:00

    This would also cause streaming videos to stutter then freeze correct?

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  2. Anonymous
    2019-06-01T06:19:35+00:00

    Hopefully, the engineers can get a handle on this and fix it soon.

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  3. Anonymous
    2019-06-01T06:17:01+00:00

    I already had the latest drivers installed except for the BIOS update.

    Unfortunately, same results (~1,300us ntoskrnl.exe spike) after updating the BIOS to 2004.

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  4. Anonymous
    2019-06-01T05:03:18+00:00

    Thats ok Howard, thanks for your help, will vote on it.

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  5. Anonymous
    2019-06-01T04:59:38+00:00

    As requested, here's a link to the Feedback Hub submission:

    https://aka.ms/AA5887o

    There wasn't a good category to use so I selected Devices and Drivers -> All other issues.

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