From: Rick Jones <rick.jones2@hp.com>
To: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Evgeniy Polyakov <johnpol@2ka.mipt.ru>,
netdev@vger.kernel.org,
Christoph Lameter <cl@linux-foundation.org>,
Mel Gorman <mel@csn.ul.ie>, David Miller <davem@davemloft.net>,
Lennert Buytenhek <buytenh@marvell.com>
Subject: Re: Patch for tbench regression.
Date: Mon, 29 Sep 2008 10:01:29 -0700 [thread overview]
Message-ID: <48E109E9.9040103@hp.com> (raw)
In-Reply-To: <20080929094352.GA25273@gondor.apana.org.au>
Herbert Xu wrote:
> On Mon, Sep 29, 2008 at 03:02:13PM +0800, Herbert Xu wrote:
>
>>OK you're on FV as well. I'll try it on my laptaop next.
>
>
> Interesting. On my laptop I'm seeing 113MB/s with TSO on and
> 119MB/s without. However, netperf shows TSO on is slightly
> better than TSO off (4716Mb/s vs. 4680Mb/s).
>
> A packet dump on tbench indicates it's sending lots of small
> packets so TSO wouldn't be contributing anything positive at
> all. Hmm, it seems that even netperf isn't producing anything
> larger than MTU so something seems amiss with the TCP stack.
What is netperf reporting as its send "message" (misnomer) size? (I'm
assuming this is a TCP_STREAM test rather than a TCP_RR or other test?)
rick jones
prev parent reply other threads:[~2008-09-29 17:01 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-28 21:15 Patch for tbench regression Evgeniy Polyakov
2008-09-29 3:12 ` Herbert Xu
2008-09-29 5:36 ` Evgeniy Polyakov
2008-09-29 5:40 ` Herbert Xu
2008-09-29 5:52 ` Evgeniy Polyakov
2008-09-29 6:40 ` Herbert Xu
2008-09-29 6:45 ` Evgeniy Polyakov
2008-09-29 7:02 ` Herbert Xu
2008-09-29 7:11 ` Evgeniy Polyakov
2008-09-29 7:20 ` Herbert Xu
2008-09-29 9:43 ` Herbert Xu
2008-09-29 9:51 ` Herbert Xu
2008-09-29 17:07 ` Rick Jones
2008-09-29 10:34 ` Evgeniy Polyakov
2008-09-29 13:34 ` Christoph Lameter
2008-09-29 17:01 ` Rick Jones [this message]
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