From: David Miller <davem@davemloft.net>
To: rick.jones2@hp.com
Cc: lm@bitmover.com, torvalds@linux-foundation.org,
herbert@gondor.apana.org.au, wscott@bitmover.com,
netdev@vger.kernel.org
Subject: Re: tcp bw in 2.6
Date: Tue, 02 Oct 2007 15:32:16 -0700 (PDT) [thread overview]
Message-ID: <20071002.153216.82129058.davem@davemloft.net> (raw)
In-Reply-To: <4702C37F.4030601@hp.com>
From: Rick Jones <rick.jones2@hp.com>
Date: Tue, 02 Oct 2007 15:17:35 -0700
> Stranger still, with a mix of a 2.6.23-rc5ish kernel and a net-2.6.24 one
> (pulled oh middle of last week?) I get link-rate and I see no asymmetry between
> TCP_STREAM and TCP_MAERTS over an "e1000" link with no switch or tg3 with a
> ProCurve on my rx2660's.
>
> I can also run bw_tcp from lmbench 3.0a8 and get 106 MB/s.
>
> I don't have a netgear switch to try in all this...
I'm starting to have a theory about what the bad case might
be.
A strong sender going to an even stronger receiver which can
pull out packets into the process as fast as they arrive.
This might be part of what keeps the receive window from
growing.
next prev parent reply other threads:[~2007-10-02 22:32 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20070929142517.EC6AB5FB21@work.bitmover.com>
[not found] ` <alpine.LFD.0.999.0709290914410.3579@woody.linux-foundation.org>
[not found] ` <20070929172639.GB7037@bitmover.com>
[not found] ` <alpine.LFD.0.999.0709291050200.3579@woody.linux-foundation.org>
2007-10-02 0:59 ` tcp bw in 2.6 Larry McVoy
2007-10-02 2:14 ` Linus Torvalds
2007-10-02 2:20 ` Larry McVoy
2007-10-02 3:50 ` David Miller
2007-10-02 4:23 ` Larry McVoy
2007-10-02 15:06 ` John Heffner
2007-10-02 17:14 ` Rick Jones
2007-10-02 17:20 ` Larry McVoy
2007-10-02 18:01 ` Rick Jones
2007-10-02 18:40 ` Larry McVoy
2007-10-02 19:47 ` Rick Jones
2007-10-02 21:32 ` David Miller
2007-10-03 7:19 ` Bill Fink
2007-10-02 10:52 ` Herbert Xu
2007-10-02 15:09 ` Larry McVoy
2007-10-02 15:41 ` Larry McVoy
2007-10-02 16:25 ` Larry McVoy
2007-10-02 16:47 ` Stephen Hemminger
2007-10-02 16:49 ` Larry McVoy
2007-10-02 17:10 ` Stephen Hemminger
2007-10-15 12:40 ` Daniel Schaffrath
2007-10-15 15:49 ` Stephen Hemminger
2007-10-02 16:34 ` Linus Torvalds
2007-10-02 16:48 ` Larry McVoy
2007-10-02 21:16 ` David Miller
2007-10-02 21:26 ` Larry McVoy
2007-10-02 21:47 ` David Miller
2007-10-02 22:17 ` Rick Jones
2007-10-02 22:32 ` David Miller [this message]
2007-10-02 22:36 ` Larry McVoy
2007-10-02 22:59 ` Rick Jones
2007-10-03 8:02 ` David Miller
2007-10-02 16:48 ` Ben Greear
2007-10-02 17:11 ` Larry McVoy
2007-10-02 17:18 ` Ben Greear
2007-10-02 17:21 ` Larry McVoy
2007-10-02 17:54 ` Stephen Hemminger
2007-10-02 18:35 ` Larry McVoy
2007-10-02 18:29 ` John Heffner
2007-10-02 19:07 ` Larry McVoy
2007-10-02 19:29 ` Linus Torvalds
2007-10-02 20:31 ` David Miller
2007-10-02 19:33 ` Larry McVoy
2007-10-02 19:53 ` John Heffner
2007-10-02 20:14 ` Larry McVoy
2007-10-02 20:40 ` Rick Jones
2007-10-02 20:42 ` Wayne Scott
2007-10-02 21:56 ` Linus Torvalds
2007-10-02 19:27 ` Linus Torvalds
2007-10-02 19:53 ` Rick Jones
2007-10-02 20:33 ` David Miller
2007-10-02 20:44 ` Roland Dreier
2007-10-02 21:21 ` Larry McVoy
2007-10-03 21:13 ` Pekka Pietikainen
2007-10-03 21:23 ` Larry McVoy
2007-10-03 21:50 ` Pekka Pietikainen
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