linux-kernel - Re: Network slowdown due to CFS

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Message-ID: <20070927105637.GA17936@elte.hu>
Date:	Thu, 27 Sep 2007 12:56:37 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Martin Michlmayr <tbm@...ius.com>
Cc:	Mike Galbraith <efault@....de>,
	Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org,
	Stephen Hemminger <shemminger@...ux-foundation.org>
Subject: Re: Network slowdown due to CFS


* Martin Michlmayr <tbm@...ius.com> wrote:

> * Ingo Molnar <mingo@...e.hu> [2007-09-27 11:49]:
> > Martin, could you check the iperf patch below instead of the yield
> > patch - does it solve the iperf performance problem equally well,
> > and does CPU utilization drop for you too?
> 
> Yes, it works and CPU goes down too.

i'm curious by how much does CPU go down, and what's the output of 
iperf? (does it saturate full 100mbit network bandwidth)

	Ingo
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