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Re: [PATCH 5/6] xfs: convert the xfsaild threads to a workqueue

To: Dave Chinner <david@xxxxxxxxxxxxx>
Subject: Re: [PATCH 5/6] xfs: convert the xfsaild threads to a workqueue
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Sun, 3 Apr 2011 06:59:57 -0400
Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx>, xfs@xxxxxxxxxxx
In-reply-to: <20110403003847.GI6957@dastard>
References: <1299715529-11026-1-git-send-email-david@xxxxxxxxxxxxx> <1299715529-11026-6-git-send-email-david@xxxxxxxxxxxxx> <20110310174818.GE19609@xxxxxxxxxxxxx> <20110318040648.GG30195@dastard> <20110319134500.GB10056@xxxxxxxxxxxxx> <20110403003847.GI6957@dastard>
User-agent: Mutt/1.5.21 (2010-09-15)
On Sun, Apr 03, 2011 at 10:38:47AM +1000, Dave Chinner wrote:
> FWIW, we already have an implicit delay for frequent callers when
> the AIL is busy - the uninterruptible sleep for  sleeps of <= 20ms.
> That was implemented specifically to rate-limit wakeups while the
> xfsaild was busy pushing. This is essentially a different
> implementation of the same mechanism.

In that cases maybe the minum delay of the delayed work should stay
at 20ms?

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