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 2/3] xfs: use per-filesystem I/O completion workqueues
Date: Thu, 25 Aug 2011 01:20:04 -0400 [thread overview]
Message-ID: <20110825052004.GB5617@infradead.org> (raw)
In-Reply-To: <20110825004811.GK3162@dastard>
On Thu, Aug 25, 2011 at 10:48:11AM +1000, Dave Chinner wrote:
> The only issue I see with this is that it brings back per-filesystem
> workqueue threads. Because all the workqueues are defined with
> MEM_RECLAIM, there is a rescuer thread per workqueue that is used
> when the CWMQ cannot allocate memory to queue the work to the
> appropriate per-cpu queue.
Not much we can do about it.
> If we are going to block here, then we probably should increase the
> per-cpu concurrency of the work queue so that we can continue to
> process other ioends while this one is blocked.
True.
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prev parent reply other threads:[~2011-08-25 5:20 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-24 5:59 [PATCH 0/3] RFC: log all i_size updates Christoph Hellwig
2011-08-24 5:59 ` [PATCH 1/3] xfs: improve ioend error handling Christoph Hellwig
2011-09-02 0:19 ` Dave Chinner
2011-09-12 14:40 ` Alex Elder
2011-09-12 14:49 ` Christoph Hellwig
2011-08-24 5:59 ` [PATCH 2/3] xfs: use per-filesystem I/O completion workqueues Christoph Hellwig
2011-08-25 0:48 ` Dave Chinner
2011-08-25 5:20 ` Christoph Hellwig [this message]
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