From: "Miquel van Smoorenburg" <miquels@cistron.nl>
To: linux-kernel@vger.kernel.org
Subject: Re: Slow NFS performance over wireless!
Date: Thu, 15 Jan 2004 01:12:07 +0000 (UTC) [thread overview]
Message-ID: <bu4pd6$anf$1@news.cistron.nl> (raw)
In-Reply-To: 1074026758.4524.65.camel@nidelv.trondhjem.org
In article <1074026758.4524.65.camel@nidelv.trondhjem.org>,
Trond Myklebust <trond.myklebust@fys.uio.no> wrote:
>There are a couple of performance related patches that should be applied
>to stock 2.6.0/2.6.1. One handles a problem with remove_suid()
>generating a whole load of SETATTR calls if you are writing to a file
>that has the "x" bit set. The other handles an efficiency issue related
>to random write + read combinations.
>
>Either look for them on my website (under
>http://www.fys.uio.no/~trondmy/src), or apply Andrew's 2.6.1-mm2 patch.
If one runs bonnie on a NFS mounted share, what should the rewrite
throughput be?
On an NFS server locally (2.6.1-mm3) I get as write/rewrite/read
speeds 107 / 25 / 110 MB/sec, CPU loads of a few percent.
On an NFS client (2.6.1-mm3, filesystem mounted with options
udp,nfsvers=3,rsize=32768,wsize=32768) I get for the same share as
write/rewrite/read speeds 36 / 4 / 38 MB/sec. CPU load is also
very high on the client for the rewrite case (80%).
That's with back-to-back GigE, full duplex, MTU 9000, P IV 3.0 Ghz.
(I tried MTU 5000 and 1500 as well, doesn't really matter).
Is that what would be expected ?
Mike.
next prev parent reply other threads:[~2004-01-15 1:12 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-01-06 0:46 2.6.0 NFS-server low to 0 performance Guennadi Liakhovetski
2004-01-07 13:36 ` Guennadi Liakhovetski
2004-01-07 22:30 ` bill davidsen
2004-01-08 12:48 ` Guennadi Liakhovetski
2004-01-07 17:49 ` Mike Fedyk
2004-01-07 18:13 ` Guennadi Liakhovetski
2004-01-07 18:19 ` Mike Fedyk
2004-01-07 19:06 ` Guennadi Liakhovetski
2004-01-09 10:08 ` Guennadi Liakhovetski
2004-01-09 18:00 ` Mike Fedyk
2004-01-10 0:38 ` Guennadi Liakhovetski
2004-01-10 1:38 ` Mike Fedyk
2004-01-10 11:10 ` Guennadi Liakhovetski
2004-01-10 14:30 ` Trond Myklebust
2004-01-10 20:04 ` Guennadi Liakhovetski
2004-01-10 21:57 ` Trond Myklebust
2004-01-10 22:14 ` Mike Fedyk
2004-01-10 22:47 ` Trond Myklebust
2004-01-10 22:42 ` Guennadi Liakhovetski
2004-01-10 22:51 ` Jesper Juhl
2004-01-11 13:18 ` Helge Hafting
2004-01-11 13:53 ` Russell King
2004-01-11 14:24 ` Guennadi Liakhovetski
2004-01-15 11:38 ` Pavel Machek
2004-01-12 5:06 ` Bill Davidsen
2004-01-12 14:27 ` Trond Myklebust
2004-01-12 15:12 ` Trond Myklebust
2004-01-16 5:44 ` Mike Fedyk
2004-01-16 6:05 ` Trond Myklebust
2004-01-16 6:53 ` Mike Fedyk
2004-01-10 22:34 ` Mike Fedyk
2004-01-10 22:52 ` Guennadi Liakhovetski
2004-01-10 22:57 ` Mike Fedyk
2004-01-10 23:00 ` Guennadi Liakhovetski
2004-01-08 21:42 ` Pavel Machek
2004-01-12 23:18 ` Guennadi Liakhovetski
2004-01-12 23:28 ` Jesper Juhl
2004-01-13 0:39 ` Pavel Machek
2004-01-14 3:00 ` Daniel Roesen
2004-01-14 18:16 ` Guennadi Liakhovetski
2004-01-13 1:55 ` Slow NFS performance over wireless! Roman Gaufman
2004-01-13 2:15 ` Trond Myklebust
2004-01-13 20:25 ` Joshua M. Thompson
2004-01-13 20:45 ` Trond Myklebust
2004-01-15 1:12 ` Miquel van Smoorenburg [this message]
[not found] ` <20040115013312.GO1594@srv-lnx2600.matchmail.com>
2004-01-15 2:04 ` Miquel van Smoorenburg
2004-01-15 2:35 ` Trond Myklebust
2004-01-15 19:00 ` Slowwwwwwwwwwww NFS read performance Trond Myklebust
2004-01-15 19:53 ` Ram Pai
2004-01-15 20:16 ` Trond Myklebust
2004-01-15 20:54 ` Trond Myklebust
2004-01-18 6:04 ` Greg Fitzgerald
2004-01-18 17:55 ` Mike Fedyk
2004-01-16 0:52 ` Slow NFS performance [was: over wireless!] Miquel van Smoorenburg
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