From: Chris Wilson <chris@chris-wilson.co.uk>
To: Paolo Ornati <ornati@gmail.com>
Cc: intel-gfx@lists.freedesktop.org
Subject: Re: [PATCH] drm/i915: Use PM QoS to prevent C-state memory starvation of the GPU
Date: Sat, 15 Jan 2011 11:13:35 +0000 [thread overview]
Message-ID: <849307$b5l8cu@azsmga001.ch.intel.com> (raw)
In-Reply-To: <20110115113431.0e42f037@gmail.com>
On Sat, 15 Jan 2011 11:34:31 +0100, Paolo Ornati <ornati@gmail.com> wrote:
> On Wed, 8 Dec 2010 16:24:35 +0000
> Chris Wilson <chris@chris-wilson.co.uk> wrote:
>
> > This is just a preliminary attempt to see if this even helps. Obviously
> > some more effort will need to be spent investigating a better choice of
> > latency and when we need to request it, but first: does this help?
>
> Sorry for the very long delay... it seems I've latency problems too ;)
>
> As for Andrew's comment it looks I need a recent kernel to actually
> test this patch:
>
> "Do you have the 2.6.36.2 candidate patch that fixes pm_qos in? From
> the description, it looks like pm_qos doesn't work at all without it."
>
> The "problem" is that I cannot reproduce it with 2.6.37 (tested
> yesterday for 8+ hours), but maybe it's just hidden by some coincidence.
Check with powertop to see if anything is preventing low C-states. It would
be great if it just magically fixed itself...
-Chris
--
Chris Wilson, Intel Open Source Technology Centre
next prev parent reply other threads:[~2011-01-15 11:13 UTC|newest]
Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-13 20:36 vsync problems with recent graphics stack and 945gm Vasily Khoruzhick
2010-09-13 20:44 ` Jesse Barnes
2010-09-13 21:10 ` Vasily Khoruzhick
2010-09-13 21:19 ` Interrupt latency on some 945GM platforms Jesse Barnes
2010-09-13 21:19 ` Jesse Barnes
2010-09-13 21:41 ` Vasily Khoruzhick
2010-09-13 21:41 ` Vasily Khoruzhick
2010-09-13 21:46 ` Jesse Barnes
2010-09-13 21:46 ` Jesse Barnes
2010-09-13 21:52 ` Vasily Khoruzhick
2010-09-13 21:52 ` Vasily Khoruzhick
2010-09-13 21:59 ` Jesse Barnes
2010-09-13 21:59 ` Jesse Barnes
2010-09-13 22:03 ` Vasily Khoruzhick
2010-09-14 0:55 ` Venkatesh Pallipadi
2010-09-14 8:09 ` Vasily Khoruzhick
2010-09-14 8:09 ` Vasily Khoruzhick
2010-09-14 9:52 ` Thomas Gleixner
2010-09-14 12:29 ` Vasily Khoruzhick
2010-09-14 12:29 ` Vasily Khoruzhick
2010-09-14 22:41 ` Sitsofe Wheeler
2010-09-15 7:07 ` Vasily Khoruzhick
2010-09-15 7:07 ` Vasily Khoruzhick
2010-09-16 15:03 ` Vasily Khoruzhick
2010-09-16 15:03 ` Vasily Khoruzhick
2010-09-16 18:07 ` Thomas Gleixner
2010-09-16 18:30 ` Vasily Khoruzhick
2010-09-16 18:30 ` Vasily Khoruzhick
2010-09-16 18:42 ` Vasily Khoruzhick
2010-09-16 18:50 ` Thomas Gleixner
2010-09-16 20:06 ` Vasily Khoruzhick
2010-09-24 19:39 ` Jesse Barnes
2010-09-24 19:48 ` Vasily Khoruzhick
2010-09-24 19:51 ` Jesse Barnes
2010-09-24 19:51 ` Jesse Barnes
2010-09-26 10:53 ` Stefan Biereigel
2010-09-27 0:46 ` Shaohua Li
2010-09-27 0:46 ` Shaohua Li
2010-09-27 2:52 ` Alexander Lam
2010-09-27 5:45 ` Stefan Biereigel
2010-09-27 11:41 ` Vasily Khoruzhick
2010-09-27 11:41 ` Vasily Khoruzhick
2010-09-27 21:18 ` Vasily Khoruzhick
2010-09-27 21:18 ` Vasily Khoruzhick
2010-09-30 20:23 ` Alexander Lam
2010-09-25 10:25 ` Paolo Ornati
2010-09-17 9:02 ` [Intel-gfx] " Simon Farnsworth
2010-09-17 9:02 ` Simon Farnsworth
2010-09-17 16:30 ` [Intel-gfx] " Jesse Barnes
2010-09-17 12:50 ` Vasily Khoruzhick
2010-09-17 12:50 ` Vasily Khoruzhick
2010-09-21 18:26 ` [Intel-gfx] " Paolo Ornati
2010-09-21 22:56 ` Jesse Barnes
2010-09-21 22:56 ` Jesse Barnes
2010-09-22 5:57 ` [Intel-gfx] " Vasily Khoruzhick
2010-09-23 18:21 ` Paolo Ornati
2010-09-25 10:28 ` Paolo Ornati
2010-10-16 15:54 ` [Intel-gfx] Interrupt latency on some 945GM platforms -- and TCP/IP silent data corruption? Paolo Ornati
2010-12-08 16:24 ` [PATCH] drm/i915: Use PM QoS to prevent C-state memory starvation of the GPU Chris Wilson
2010-12-08 16:44 ` Vasily Khoruzhick
2010-12-08 16:54 ` Chris Wilson
2010-12-08 17:00 ` Vasily Khoruzhick
2010-12-08 17:54 ` Andrew Lutomirski
2010-12-08 18:14 ` Vasily Khoruzhick
2010-12-08 18:19 ` Andrew Lutomirski
2010-12-08 18:55 ` Vasily Khoruzhick
[not found] ` <20110115113431.0e42f037@gmail.com>
2011-01-15 11:13 ` Chris Wilson [this message]
2010-09-24 18:41 ` Interrupt latency on some 945GM platforms Jesse Barnes
2010-09-14 9:55 ` Andi Kleen
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