rnoland at FreeBSD.org
Sat May 9 12:07:17 UTC 2009
On Sat, 2009-05-09 at 10:26 +0200, Dominic Fandrey wrote:
> Robert Noland wrote:
> > 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 commit
> >>> something thinking that I have it resolved, it isn't. So I'm waiting on
> >>> hardware to arrive that will let me test this all more thoroughly. I do
> >>> have a patch that I think fixes most of the issues on Intel, but the ddx
> >>> 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.
> >> 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...
> I don't know what you did with the last update, but performance is now
> better than ever (2% above what it used to be), which equels 3-4 more
> frames in ioQuake3 or 200 more in glxgears.
> The uptime of the notebook is now 15 hours and the interrupt load
> insignificant. I get no more than 8000 interrupts per seconds.
> 4000 of these are CPU timers (2000 for each core) and 1000 more are
> from my mouse, when I move it very fast. Around 2500 from vgapci, when
> I run glxgears and the rest is just scraps of whatever else is running
> (e.g. sound).
Which update, what? I haven't touched the kernel tree in a while, just
trying to sort it all out with patches here and there. Are you saying
the the 2.7.0 intel driver helped? Or maybe the Xserver or mesa
> Thanks a lot.
Robert Noland <rnoland at FreeBSD.org>
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