linux-kernel - Re: [PATCH] nfs: fix congestion control

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Date:	Wed, 17 Jan 2007 09:45:15 -0500
From:	Trond Myklebust <trond.myklebust@....uio.no>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	Andrew Morton <akpm@...l.org>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org
Subject: Re: [PATCH] nfs: fix congestion control

On Wed, 2007-01-17 at 15:29 +0100, Peter Zijlstra wrote:
> I was thinking that since the server needs to actually sync the page a
> commit might be quite expensive (timewise), hence I didn't want to flush
> too much, and interleave them with writing out some real pages to
> utilise bandwidth.

Most servers just call fsync()/fdatasync() whenever we send a COMMIT, in
which case the extra round trips are just adding unnecessary latency.



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