Heavy I/O blocks FreeBSD box for several seconds

Steve Kargl sgk at troutmask.apl.washington.edu
Mon Jul 25 16:23:24 UTC 2011


On Mon, Jul 25, 2011 at 01:00:27PM +0300, Andriy Gapon wrote:
> on 12/07/2011 11:05 Andriy Gapon said the following:
> > I think that the best thing you can further provide (as objective evidence for
> > the problem at hand) is ktr(4) traces for at least KTR_SCHED mask.  Perhaps you
> > even already have them from your previous sessions with Jeff.
> > 
> > P.S. This is not a promise to actually debug this issue based on the traces :-)
> 
> So do you have an opportunity to provide this kind of information?
> Actually I would like KTR_SCHED|KTR_INTR|KTR_PROC|KTR_SYSC mask.
> Also, sysctl kern.sched output would be useful too.
> This is for the ULE case, of course.
> 

I won't have time until next week to investigate.

-- 
Steve


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