linux-kernel - Re: Poor UDP performance using 2.6.21-rc5-rt5

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Message-ID: <20070402142358.GA32103@elte.hu>
Date:	Mon, 2 Apr 2007 16:23:58 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	"dave_sperry@...e.org" <dasperry@...cast.net>
Cc:	Dave Sperry <dave_sperry@...e.org>, linux-rt-users@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: Poor UDP performance using 2.6.21-rc5-rt5


* dave_sperry@...e.org <dasperry@...cast.net> wrote:

> Thanks for all the input Ingo, Here's a list of all the permutations 
> I've tried:

one thing i noticed is that cyclesoak interferes with the netperf 
workload. This is quite surprising. 'top' and 'vmstat' output is 
reliable on -rt, and the overhead goes down if i stop cyclesoak.

	Ingo
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