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From: Ingo Molnar <mingo@elte.hu>
To: Dave Sperry <dave_sperry@ieee.org>
Cc: linux-rt-users@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: Poor UDP performance using 2.6.21-rc5-rt5
Date: Mon, 2 Apr 2007 09:21:11 +0200	[thread overview]
Message-ID: <20070402072111.GA21356@elte.hu> (raw)
In-Reply-To: <461004CE.1030009@ieee.org>


* Dave Sperry <dave_sperry@ieee.org> wrote:

> I have a dual core Opteron machine that exhibits poor UDP performance 
> (RT consumes more than 2X cpu) with the 2.6.21-rc5-rt5 as compared to 
> 2.6.21-rc5. Top shows the IRQ handler consuming a lot of CPU.

update: even with acpi_pm clocksource on vanilla i can reproduce similar 
overhead using netperf.

	Ingo

  parent reply	other threads:[~2007-04-02  7:21 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-04-01 19:15 Poor UDP performance using 2.6.21-rc5-rt5 Dave Sperry
2007-04-01 20:07 ` Nivedita Singhvi
2007-04-01 22:00   ` Dave Sperry
2007-04-02  5:55   ` Ingo Molnar
2007-04-02  6:30     ` Ingo Molnar
2007-04-02  7:21 ` Ingo Molnar [this message]
2007-04-02  8:17   ` Dave Sperry
2007-04-02  9:37     ` Ingo Molnar
2007-04-02 14:09 dave_sperry@ieee.org
2007-04-02 14:23 ` Ingo Molnar
2007-04-02 17:17 dave_sperry@ieee.org
2007-04-02 17:50 dave_sperry@ieee.org
2007-04-02 19:04 ` Ingo Molnar
2007-04-03  0:09   ` David Sperry
2007-04-03  6:43     ` Ingo Molnar
2007-04-03  8:51     ` Ingo Molnar

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