From: Rick Jones <rick.jones2@hp.com>
To: kalyan tejaswi <kalyanatejaswi@gmail.com>
Cc: netdev@vger.kernel.org
Subject: Re: degradation in bridging performance of 5% in 2.6.20 when compared to 2.6.19
Date: Fri, 16 Feb 2007 09:43:20 -0800 [thread overview]
Message-ID: <45D5ED38.1070503@hp.com> (raw)
In-Reply-To: <9dd3c65d0702152226h6bfc4e22q3f3b04d97d8da1fb@mail.gmail.com>
kalyan tejaswi wrote:
> Hi all,
> I have been comparing bridging performance for 2.6.20 and 2.6.19
> kernels. The kenel configurations are identical for both the kernels.
> I use D-Link cards (8139too driver) for the Malta 4Kc board.
>
> The setup is:
>
> netperf client <-------> malta 4Kc <---------> netperf server.
>
> The throughput statistics (in 10^6 bits/second) are:
>
> 2.6.19 2.6.20
> routing 30.2 30.16
> bridging 32.35 30.81
>
> I observe that there has been a degradation in bridging performance of
> 5% in 2.6.20 when compared to 2.6.19.
>
> Has anyone observed similar behaviour?
> Any inputs or suggestions are welcome.
In each case is the malta CPU bound? If not, some idea of the change in
CPU util might be helpful.
rick jones
btw, netperf 2.4.3 just released:
ftp://ftp.netperf.org/netperf
http://www.netperf.org/svn/netperf2/tags/netperf-2.4.3
next prev parent reply other threads:[~2007-02-16 17:43 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-16 6:26 degradation in bridging performance of 5% in 2.6.20 when compared to 2.6.19 kalyan tejaswi
2007-02-16 17:43 ` Rick Jones [this message]
2007-02-16 18:32 ` Stephen Hemminger
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