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Date:      Mon, 25 Jul 2011 09:23:23 -0700
From:      Steve Kargl <sgk@troutmask.apl.washington.edu>
To:        Andriy Gapon <avg@FreeBSD.org>
Cc:        freebsd-current@FreeBSD.org
Subject:   Re: Heavy I/O blocks FreeBSD box for several seconds
Message-ID:  <20110725162323.GA27425@troutmask.apl.washington.edu>
In-Reply-To: <4E2D3EBB.9060508@FreeBSD.org>
References:  <4E14A54A.4050106@freebsd.org> <4E155FF9.5090905@FreeBSD.org> <20110707151440.GA75537@troutmask.apl.washington.edu> <4E160C2F.8020001@FreeBSD.org> <20110707200845.GA77049@troutmask.apl.washington.edu> <ivf221$oo2$1@dough.gmane.org> <4E1B1198.6090308@FreeBSD.org> <20110711161654.GA97361@troutmask.apl.washington.edu> <4E1C003B.4090604@FreeBSD.org> <4E2D3EBB.9060508@FreeBSD.org>

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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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