From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: Michael Haberler <mail17@mah.priv.at>
Cc: Schooner <schooner30@tiscali.co.uk>,
sam sokolik <samco@empirescreen.com>,
John Morris <john@zultron.com>,
xenomai@xenomai.org
Subject: Re: [Xenomai] puzzled: running switchtest improves latency figures permanently
Date: Wed, 13 Feb 2013 20:39:37 +0100 [thread overview]
Message-ID: <511BEBF9.1050202@xenomai.org> (raw)
In-Reply-To: <EBF3A505-DBCB-492B-B788-2127A053DAF1@mah.priv.at>
On 02/13/2013 03:35 PM, Michael Haberler wrote:
> Are there any specific knobs you'd suggest twisting?
You have to configure what should happen when Linux is idle. You can
change what Linux does when idle, by using the kernel command line
parameters as Henri told you, or you may be able to configure what the
processor does when idle. This may be possible from the BIOS menu, or
alternatively with special tools which can be loaded by the boot-loader
before Linux. On Intel processors, such a tool is Intel BIOS
Implementation Test suite:
http://biosbits.org/
I do not know about AMD processors.
Regards.
--
Gilles.
prev parent reply other threads:[~2013-02-13 19:39 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <DC570CF5-F540-40FB-B313-596AF53EDDA2@mah.priv.at>
2013-02-13 9:26 ` [Xenomai] puzzled: running switchtest improves latency figures permanently Michael Haberler
2013-02-13 9:49 ` Henri Roosen
2013-02-13 10:01 ` Jan Kiszka
2013-02-13 10:06 ` Jan Kiszka
2013-02-13 11:55 ` Gilles Chanteperdrix
2013-02-13 11:53 ` Gilles Chanteperdrix
2013-02-13 14:35 ` Michael Haberler
2013-02-13 19:39 ` Gilles Chanteperdrix [this message]
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