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From: Christoph Hellwig <hch@infradead.org>
To: Dave Chinner <david@fromorbit.com>
Cc: Christoph Hellwig <hch@infradead.org>, xfs@oss.sgi.com
Subject: Re: [PATCH 5/9] xfs: reduce the number of AIL push wakeups
Date: Thu, 16 Dec 2010 19:23:07 -0500	[thread overview]
Message-ID: <20101217002307.GA24135@infradead.org> (raw)
In-Reply-To: <20101216215050.GA5193@dastard>

On Fri, Dec 17, 2010 at 08:50:50AM +1100, Dave Chinner wrote:
> What tests?

I couldn't really see a pattern yet - it's different ones and different
amount of warnings during each run.

> So this is saying is that a 20ms uninterruptible sleep lasting for more
> than 120s? Doesn't that imply some kind of scheduler starvation, not
> an actual XFS problem?

It does for sure look odd to me.  I'll do a sub-commit bisect between
the two hunk in the patch tomorrow to drill a bit deeper into what's
going on.

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  reply	other threads:[~2010-12-17  0:21 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-12-13  4:32 xfs: AIL lock contention reduction V3 Dave Chinner
2010-12-13  4:32 ` [PATCH 1/9] xfs: fix EFI transaction cancellation Dave Chinner
2010-12-17 11:18   ` Christoph Hellwig
2010-12-13  4:32 ` [PATCH 2/9] xfs: Pull EFI/EFD handling out from under the AIL lock Dave Chinner
2010-12-17 11:22   ` Christoph Hellwig
2010-12-20  1:00     ` Dave Chinner
2010-12-13  4:32 ` [PATCH 3/9] xfs: clean up xfs_ail_delete() Dave Chinner
2010-12-13  4:32 ` [PATCH 4/9] xfs: bulk AIL insertion during transaction commit Dave Chinner
2010-12-17 11:25   ` Christoph Hellwig
2010-12-13  4:32 ` [PATCH 5/9] xfs: reduce the number of AIL push wakeups Dave Chinner
2010-12-16 15:38   ` Christoph Hellwig
2010-12-16 21:50     ` Dave Chinner
2010-12-17  0:23       ` Christoph Hellwig [this message]
2010-12-13  4:32 ` [PATCH 6/9] xfs: consume iodone callback items on buffers as they are processed Dave Chinner
2010-12-13  4:32 ` [PATCH 7/9] xfs: remove all the inodes on a buffer from the AIL in bulk Dave Chinner
2010-12-17 11:25   ` Christoph Hellwig
2010-12-13  4:32 ` [PATCH 9/9] xfs: use AIL bulk delete function to implement single delete Dave Chinner
2010-12-17 14:16   ` Christoph Hellwig

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