From: Mike Fedyk <mfedyk@matchmail.com>
To: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: 2.6.0 NFS-server low to 0 performance
Date: Fri, 9 Jan 2004 17:38:24 -0800 [thread overview]
Message-ID: <20040110013824.GA17845@matchmail.com> (raw)
In-Reply-To: <Pine.LNX.4.44.0401100024210.676-100000@poirot.grange>
On Sat, Jan 10, 2004 at 01:38:00AM +0100, Guennadi Liakhovetski wrote:
> On Fri, 9 Jan 2004, Mike Fedyk wrote:
> > Find out how many packets are being dropped on your two hosts with 2.4 and
> > 2.6.
>
> So, I've run 2 tcpdumps - on server and on client. Woooo... Looks bad.
>
> With 2.4 (_on the server_) the client reads about 8K at a time, which is
> sent in 5 fragments 1500 (MTU) bytes each. And that works. Also
> interesting, that fragments are sent in the reverse order.
>
> With 2.6 (on the server, same client) the client reads about 16K at a
> time, split into 11 fragments, and then packets number 9 and 10 get
> lost... This all with a StrongARM client and a PCMCIA network-card. With a
> PXA-client (400MHz compared to 200MHz SA) and an on-board eth smc91x, it
> gets the first 5 fragments, and then misses every other fragment. Again -
> in both cases I was copying files to RAM. Yes, 2.6 sends fragments in
> direct order.
Is that an x86 server, and an arm client?
next prev parent reply other threads:[~2004-01-10 1:38 UTC|newest]
Thread overview: 59+ 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 [this message]
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
[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
[not found] <1cpDr-5az-11@gated-at.bofh.it>
[not found] ` <1csrv-Er-9@gated-at.bofh.it>
2004-01-10 16:08 ` 2.6.0 NFS-server low to 0 performance Andi Kleen
2004-01-10 16:19 ` Trond Myklebust
-- strict thread matches above, loose matches on Subject: below --
2004-01-12 14:40 James Pearson
2004-01-12 15:22 ` Trond Myklebust
2004-01-13 11:08 ` Muli Ben-Yehuda
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