nfsd readahead
From: Colin Gibbs (colin_at_gibbsonline.net)
Date: 05/31/04
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Date: Mon, 31 May 2004 13:05:25 -0600 To: linux-kernel@vger.kernel.org
Hi,
I was having problems with slow streaming reads over nfs. After much
investigation, I found that nfsd uses its own cache of readahead
parameters and that:
(1) they were not being reused
(2) they were not being initialized properly
For (1) decrement p_count after the read is done. I don't see any other
users of these readahead parameters, so I guess its ok.
For (2) call file_ra_state_init.
With these changes, I get 35MB/s reads from disk over nfs. Before I got
7MB/s.
The bit with the stats is entirely optional.
Colin
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- text/plain attachment: nfsd-readahead.patch
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