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Date:      Fri, 10 Apr 2009 12:21:44 -0500
From:      Robert Noland <rnoland@FreeBSD.org>
To:        Dominic Fandrey <kamikaze@bsdforen.de>
Cc:        Alexander Motin <mav@FreeBSD.org>, freebsd-stable@freebsd.org
Subject:   Re: powerd broken
Message-ID:  <1239384104.1922.70.camel@balrog.2hip.net>
In-Reply-To: <49DF5D60.9010803@bsdforen.de>
References:  <1238293386.00093672.1238281804@10.7.7.3> <49CF0803.1070505@FreeBSD.org>	<49CF2F8D.6000905@bsdforen.de> <49CF4EB9.60108@FreeBSD.org>	<49CF49F5.6010800@bsdforen.de> <49CF615A.6050304@FreeBSD.org>	<49CF595A.30805@bsdforen.de> <49CF6B28.2080400@FreeBSD.org>	<49CF60AB.4040709@bsdforen.de> <49CF6899.2060002@bsdforen.de> <49CF8E8D.1080604@bsdforen.de> <49CF9C19.3020509@FreeBSD.org>  <49D5DA33.4010800@bsdforen.de> <1238778004.65025.30.camel@balrog.2hip.net> <49DF5D60.9010803@bsdforen.de>

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On Fri, 2009-04-10 at 16:53 +0200, Dominic Fandrey wrote:
> Robert Noland wrote:
> > I've been working on the Intel vblank / irq issues.  Every time I commi=
t
> > something thinking that I have it resolved, it isn't.  So I'm waiting o=
n
> > hardware to arrive that will let me test this all more thoroughly.  I d=
o
> > have a patch that I think fixes most of the issues on Intel, but the dd=
x
> > driver is still doing some silly things that cause issues in some cases=
.
> > I *think* the only outstanding issue I have with Intel is if something
> > is rendering (synced to vblank or not) when the display goes into dpms
> > sleep, there isn't anything to block that app, so it renders as hard as
> > it can even though it isn't being displayed.  In reality, this probably
> > isn't a huge issue, but running gears while the display is asleep keeps
> > the cpu at 100%, which isn't ideal.  Normal apps that aren't trying to
> > draw as fast as they can, shouldn't cause an issue.
>=20
> With the latest drm, the IRQ craziness is gone. However, the crappy
> performance remains. 2 months ago a RELENG_7 with all packages
> up to date yielded 124fps in a q3 timedemo that now yields 80fps.

Things are still not quite right with the Intel driver.  But performance
regressions are reported across Linux as well.  A little of this might
be us, but most of it is Intel...

robert.

> Regards
--=20
Robert Noland <rnoland@FreeBSD.org>
FreeBSD

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