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[draimus <draimus@xxxxxxxxx>]

Hi I've been watching this bug for a while because I wrote a small
fullscreen app that ran into this problem until I disabled unredirect.
I haven't noticed any performance degredation in the 5 months I've been
running 9.04 with the unredirect disabled.  So I decided to run some
benchmarks against not only the unredirect option but also against the 2
versions of the nvidia driver.  I run the 173.14 driver because I kept
seeing corruption in certain GTK apps so I wondered if that affected my
experience with the workaround.

My results show no performance impact for the workaround on my hardware.
That of course does not mean that specific video cards may not exhibit
the problem, but I believe I've discounted any specific nvidia driver
version as having any impact.

Benchmark: 
Nexuiz Benchmark Test
1024x768 Default FX levels
SHIFT-ESC "timedemo demos/demo1"

Hardware:
Thinkpad T61p
Intel(R) Core(TM)2 Duo CPU     T8300  @ 2.40GHz
nVidia Corporation Quadro FX 570M (rev a1) (256mb VRAM)
2GB RAM

Results (hope the font doesn't mangle the alignment):
Driver      Unredirect On           Unredirect Off
Version    FPS min/avg/max     FPS min/avg/max
----------------------------------------------------------------------
173.14      15/58/61                  16/57/61                 
180.44      82/149/263              83/149/263

My glxgears tests showed 60FPS constantly (not sure why everyone is
getting such huge numbers for that; is there a frame limit option?),
however the scene information in that utility is so simple I'm not
really sure it makes a very useful benchmark.

-- 
[MASTER] Applications are flickering/flashing in full screen mode
https://bugs.launchpad.net/bugs/153204
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