Re: Yet more softlockups.

[Vince Weaver]

On Wed, 10 Jul 2013, Dave Jones wrote:

> Something is really fucked up in the kernel side of perf.
> I get this right after booting..
> 
> [  114.516619] perf samples too long (4262 > 2500), lowering kernel.perf_event_max_sample_rate to 50000
> 
> That's before I even get a chance to log in, so I'm pretty sure perf isn't even being run.
> 
> And this is just booting up my desktop, not fuzzing.

This is probably related to the problem described in the thread
   perf: fix interrupt handler timing harness
   http://comments.gmane.org/gmane.linux.kernel/1520775
which in theory has a fix.  Not sure why it'd trigger during boot.
NMI watchdog?

Vince

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/