From: Dave Jones <davej@redhat.com>
To: linux-kernel@tux.tmfweb.nl
Cc: linux-kernel@vger.kernel.org
Subject: Re: [BUG] P4 HT cpufreq driver doesn't share governor/frequency between siblings
Date: Mon, 15 Mar 2004 22:41:17 +0000 [thread overview]
Message-ID: <20040315224117.GD19555@redhat.com> (raw)
In-Reply-To: <20040315223358.GA29527@mail.com>
On Mon, Mar 15, 2004 at 11:33:58PM +0100, rutger@mail.com wrote:
> Small bugreport, Pentium 4 Hyper-Threaded with SMP kernel (2.6.4-bk
> from Mar 11) and p4-clockmod module loaded, gives:
>
> # cd /sys/devices/system/cpu
> # cat cpu*/cpufreq/scaling_governor
> performance
> performance
> # echo powersave > cpu1/cpufreq/scaling_governor
> # cat cpu*/cpufreq/scaling_governor
> performance
> powersave
>
> Shouldn't the cpufreq driver be shared between the siblings?
Theoretically, as split-cores become more advanced, we will be able
to save power on unused cores. With the current P4's I'll bet it
makes little to no difference at all.
Dave
prev parent reply other threads:[~2004-03-15 22:44 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-03-15 22:33 [BUG] P4 HT cpufreq driver doesn't share governor/frequency between siblings rutger
2004-03-15 22:41 ` Dave Jones [this message]
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