Re: soft lockup - CPU#1 stuck for 15s! [swapper:0]

[Ingo Molnar]

* Parag Warudkar <parag.warudkar@xxxxxxxxx> wrote:

> Even on 100% idle I get variations that are approx in the same range 
> when not idle. Clocksource is hpet if that matters.  Next I think I 
> will disable CPU_IDLE, Tickless

also try the hpet=disable boot option.

> My ssh connection just died - another lockup in dmesg -
> 
> BUG: soft lockup - CPU#1 stuck for 14s! [sshd:509]

this would suggest that the softlockup watchdog is correct and indeed 
there was some lockup of sorts?

> $> while :; do time usleep 1111111; done
> real    0m1.112s
> real    0m1.385s
> real    0m1.112s
> real    0m1.112s
> real    0m1.279s

this, if done on an idle system, looks anomalous to me. Does 
hpet=disable help?

	Ingo
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