From: Jesse Barnes <jbarnes@virtuousgeek.org>
To: Johannes Bauer <dfnsonfsduifb@gmx.de>
Cc: intel-gfx@lists.freedesktop.org
Subject: Re: Fan running with Intel Graphics
Date: Tue, 13 Dec 2011 13:23:16 -0800 [thread overview]
Message-ID: <20111213132316.474ae20a@jbarnes-desktop> (raw)
In-Reply-To: <4EE7BFAC.9070006@gmx.de>
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On Tue, 13 Dec 2011 22:12:12 +0100
Johannes Bauer <dfnsonfsduifb@gmx.de> wrote:
> And it's not even doing *anything*, the CPUs are all at almost 0%
> (therefore I don't think there's much heat coming from there). I'm not
> doing heavy graphics (not even light graphics, not even moving the mouse!).
>
> How can I measure the graphics card load? Would it improve anything if I
> compiled a kernel myself and switched to 3.1? Is there anything at all I
> can do?
In the console, as root, can you:
$ cat /sys/kernel/debug/dri/0/i915_cur_delayinfo | grep Lowest
then echo that value into the max freq file, e.g.:
$ echo 400 > /sys/kernel/debug/dri/0/i915_max_freq
then try logging in and doing stuff. If that fixes your fan issue, it
means the GPU frequency is to blame. I think Eugeni is working on a
nice API to let users control perf vs power a bit better than our
current default of "try to run as fast as possible under any load, even
a tiny one".
--
Jesse Barnes, Intel Open Source Technology Center
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next prev parent reply other threads:[~2011-12-13 21:23 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-13 21:12 Fan running with Intel Graphics Johannes Bauer
2011-12-13 21:23 ` Jesse Barnes [this message]
2011-12-13 21:30 ` Johannes Bauer
2011-12-13 21:46 ` Jesse Barnes
2011-12-15 22:04 ` Johannes Bauer
2011-12-20 20:19 ` Johannes Bauer
2012-01-04 17:40 ` Jesse Barnes
2011-12-14 2:49 ` Eugeni Dodonov
2011-12-15 22:13 ` Johannes Bauer
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