From: Dave Jones <davej@redhat.com>
To: Thomas Renninger <trenn@suse.de>
Cc: cpufreq@lists.linux.org.uk, Stefan Seyfried <seife@suse.de>
Subject: Re: [PATCH] If a CPU gets onlined set the governor to the one that is run on other CPUs
Date: Mon, 27 Nov 2006 12:33:21 -0500 [thread overview]
Message-ID: <20061127173321.GA25763@redhat.com> (raw)
In-Reply-To: <1164620871.4656.110.camel@queen.suse.de>
On Mon, Nov 27, 2006 at 10:47:51AM +0100, Thomas Renninger wrote:
> Thinking about x86 may get 16/32/64 CPU sockets the next years, it may
> be convenient for very specific guys to run some nodes at highest
> performance to even avoid some 2% performance regression on database
> nodes while others are run with ondemand.
For the HPC folks I've spoken with, this doesn't seem likely.
If they care at all about that 2% (which they do), they'll want that
out of every CPU, and not leave anything idle.
(Typically I hear from the HPC folks "how do I turn this cpufreq thing off?")
I'd rather we looked into merging conservative & ondemand, and have
ondemand be tunable to not scale so frequently for such users.
Dave
--
http://www.codemonkey.org.uk
next prev parent reply other threads:[~2006-11-27 17:33 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-23 15:37 [PATCH] If a CPU gets onlined set the governor to the one that is run on other CPUs Thomas Renninger
2006-11-26 22:21 ` Dave Jones
2006-11-27 3:04 ` Dominik Brodowski
2006-11-27 9:47 ` Thomas Renninger
2006-11-27 17:33 ` Dave Jones [this message]
2006-11-28 10:40 ` Ashley Pittman
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