From: Eric Weigle <ehw@lanl.gov>
To: Ben Greear <greearb@candelatech.com>
Cc: Linux kernel mailing list <linux-kernel@vger.kernel.org>
Subject: Re: problems achieving decent throughput with latency.
Date: Mon, 3 Feb 2003 12:18:06 -0700 [thread overview]
Message-ID: <20030203191806.GN3250@lanl.gov> (raw)
In-Reply-To: <3E3EAF04.9010308@candelatech.com>
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You might want to have a look at
http://www.psc.edu/networking/perf_tune.html
It's a pretty good reference on TCP tuning.
Also, one gotcha: in earlier versions of 2.4 the window scaling factor was
set using the DEFAULT window size instead of the MAXIMUM window size; that
is, window scaling is set such that neither autotuning nor application level
tuning can actually tune to the maximum size (it can't be represented with
the default window scale factor). I don't think this has been fixed yet,
so you may have to set your default to be the same as your maximum for tests.
-Eric
--
------------------------------------------------------------
Eric H. Weigle -- http://public.lanl.gov/ehw/
"They that can give up essential liberty to obtain a little
temporary safety deserve neither" -- Benjamin Franklin
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next prev parent reply other threads:[~2003-02-03 19:08 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-02-02 7:38 problems achieving decent throughput with latency Ben Greear
2003-02-02 11:48 ` bert hubert
2003-02-03 5:14 ` David S. Miller
2003-02-03 15:37 ` Chris Friesen
2003-02-03 16:11 ` John Bradford
2003-02-03 16:19 ` bert hubert
2003-02-03 18:03 ` Ben Greear
2003-02-03 19:18 ` Eric Weigle [this message]
2003-02-04 5:19 ` David S. Miller
2003-02-04 7:50 ` Ben Greear
2003-02-04 7:39 ` David S. Miller
2003-02-04 8:42 ` Ben Greear
2003-02-04 8:41 ` David S. Miller
2003-02-04 8:51 ` Ben Greear
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