On Tue, Dec 28, 2010 at 2:30 AM, Pradeep Kumar <pradeepkernel@xxxxxxxxx> wrote:
> hi all,
>
> I got the fallowing soft lockup error
> "BUG: soft lockup - CPU#0 stuck for 16s! [Playback Thread:9266"]
> is that 16s is the value of /proc/sys/kernel/softlockup_thresh ??
Not really . In loose terms, 16s is the value of difference in time
when this process was last touched by this cpu.
> if yes, can I get rid of that message/panic by setting softlockup_thresh to
> some value greater that 30 ???
You can set it to 0 or something less than 0 to avoid these triggers.
See the function softlockup_tick() to see how the calculations are
made to trigger soft lockups. Roughly the calculation is :-
if "current_time - threshold" > "last time touched timestamp"
trigger soft lockup.
HTH
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--
Thanks -
Manish
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