From: Arnd Bergmann <arnd@arndb.de>
To: cbe-oss-dev@ozlabs.org
Cc: parabelboi@bopserverein.de, Christian Krafft <krafft@de.ibm.com>,
cpufreq@lists.linux.org.uk
Subject: Re: [Cbe-oss-dev] [Patch] Resending: cell_add_spuaware_cpufreq_governor.diff
Date: Wed, 16 Apr 2008 14:08:25 +0200 [thread overview]
Message-ID: <200804161408.26145.arnd@arndb.de> (raw)
In-Reply-To: <20080416134938.01d27dc2@de.ibm.com>
On Wednesday 16 April 2008, Christian Krafft wrote:
> This patch is also missing a correct load calculation.
> It works pretty well for spu's running at full time or idling, but not so well
> for mixed load (i.e. each spu running 50 percent of the time we would
> switch to fullspeed instead of half speed).
So why should that be something to optimize for? If the SPUs are all idle,
I would assume we'd be better off throwing the tasks off and putting them
into low-power mode, rather than changing the frequency, right?
What's the point of your driver, really?
Arnd <><
next prev parent reply other threads:[~2008-04-16 12:08 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-18 16:11 Subject: cell: add spu aware cpufreq governor Christian Krafft
2008-01-19 21:38 ` [Cbe-oss-dev] " Arnd Bergmann
2008-01-28 18:03 ` Christian Krafft
2008-01-28 18:12 ` [Cbe-oss-dev] [Patch] Resending: " Christian Krafft
2008-04-14 0:21 ` Arnd Bergmann
2008-04-16 11:49 ` [Cbe-oss-dev] [Patch] Resending: cell_add_spuaware_cpufreq_governor.diff Christian Krafft
2008-04-16 12:08 ` Arnd Bergmann [this message]
2008-04-16 14:53 ` Christian Krafft
2008-01-21 3:09 ` [Cbe-oss-dev] Subject: cell: add spu aware cpufreq governor Akinobu Mita
2008-01-28 10:26 ` Christian Krafft
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