[Bugme-janitors] [Bug 14426] CE: hpet increasing min_delta_ns flood

[bugzilla-daemon at bugzilla.kernel.org]

http://bugzilla.kernel.org/show_bug.cgi?id=14426





--- Comment #12 from john stultz <johnstul at us.ibm.com>  2009-12-01 01:17:36 ---
Hey Thibault, sorry for the slow response here.

Looking at the log, I'm not seeing any sign issues or overflows. It seems
instead that you're occasionally seeing ~23-30k cycle gaps. Not sure right off
what might be causing it, but it could be hardware SMIs, or long running irq
code preempting you. 

Running out of ideas, so a few things you might check:

1) Does 2.6.32-rc8 show this behavior?
2) Does running w/ nohz=off change the behavior?

Another item I noticed:
[    4.325227] NVRM: loading NVIDIA UNIX x86_64 Kernel Module  190.42  Tue Oct
20 20:25:42 PDT 2009

Can you reproduce this behavior without the nvidia binary module?

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