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