From: Dave Jones <davej@redhat.com>
To: Meelis Roos <mroos@linux.ee>
Cc: Linux Kernel list <linux-kernel@vger.kernel.org>,
davej@codemonkey.org.uk
Subject: Re: cpufreq: too long transition latency
Date: Mon, 18 Jun 2007 16:28:49 -0400 [thread overview]
Message-ID: <20070618202849.GA27690@redhat.com> (raw)
In-Reply-To: <Pine.SOC.4.64.0706182315470.11208@math>
On Mon, Jun 18, 2007 at 11:23:27PM +0300, Meelis Roos wrote:
> I have the following messages in my laptops dmesg
>
> ondemand governor failed to load due to too long transition latency
>
> and activating ondemand governor fails. This seems to be introduced in
> 2.6.22-rc* series - I seem to remember that 2.6.21 was OK but can not
> test at the moment.
>
> Laptop is IBM X20, 440BX chipset, Pentium III (Coppermine). Config and
> full dmesg are below.
speedstep-ich takes a long time to transition.
as ondemand can change speeds frequently, this can cause unacceptable
slowdowns, so it prevents itself from being used.
Dave
--
http://www.codemonkey.org.uk
prev parent reply other threads:[~2007-06-18 20:29 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-18 20:23 cpufreq: too long transition latency Meelis Roos
2007-06-18 20:28 ` Dave Jones [this message]
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