Preface.
I'm using mostly outdated Debian ``Lenny'' but with some updates. It comes with xserver 1.4.2, ati 6.8+ and radeonhd 1.2.1. But I've upgraded them to xserver 1.5.0, ati 6.9.0 and radeonhd 1.2.3. After upgrade it seemed to me that combination of xserver1.4 with ati6.8+ is faster then xserver1.5 with ati6.9. But I was too busy (or too lazy) to make tests. At last I've made some of them yesterday.
Tests.
My hardware: video - radeon X1950Pro, CPU - Athlon X2 BE-2350. I've made 5 tests using "gtkperf -a".
Cool&Quiet wasn't disabled, so sometimes 1 test is _much_ longer.
Tested configurations: xserver1.4.2+radeonhd1.2.3 with and w/o BackingStore, xserver1.5.0+radeonhd1.2.3 w & w/o backingstore, xserver1.5.0+ati6.9.0 w & w/o backingstore.
Results (in seconds, first value considered as wrong because of C&Q):
1) XServer 1.5.0 + Ati w/o Option "BackingStore" in xorg.conf
15,54 14,49 14,50 14,29 14,96 -> avg=14.56 s
2) XServer 1.5.0 + Ati with BackingStore
15,72 13,10 13,49 13,22 13,29 -> avg=13.28 s
3) XServer 1.5.0 + RadeonHD w/o BackingStore
14,35 14,10 13,95 14,03 13,33 -> avg=13.85 s
4) XServer 1.5.0 + RadeonHD with BackingStore
14,84 13,24 13,78 13,59 14,16 -> avg=13.69 s
5) XServer 1.4.2 + RadeonHD w/o BackingStore
11,93 10,59 10,50 10,09 10,15 -> avg=10.33 (yeah, only 10.33 s!)
6) XServer 1.4.2 + RadeonHD with BackingStore
too slow (> 17 s), garbage on screen
Conclusions.
1) It's faster with backingstore (and man radeon says the same .
2) W/o backingstore RadeonHD is faster than Ati (because of direct programming).
***** But why XServer 1.4.2 is so MUCH faster then 1.5.0?! *****
TODO:
1) test xserver1.4.2 with ati6.8+
2) disable C&Q and make more iterations
3) make some test and write bugreports about troubles with switching from console to X (X11 hangs), and using GL apps (X11 hangs too) (radeonhd only)
4) Upgrade Xserver to 1.5.3. Where can I take a patch?
I'm using mostly outdated Debian ``Lenny'' but with some updates. It comes with xserver 1.4.2, ati 6.8+ and radeonhd 1.2.1. But I've upgraded them to xserver 1.5.0, ati 6.9.0 and radeonhd 1.2.3. After upgrade it seemed to me that combination of xserver1.4 with ati6.8+ is faster then xserver1.5 with ati6.9. But I was too busy (or too lazy) to make tests. At last I've made some of them yesterday.
Tests.
My hardware: video - radeon X1950Pro, CPU - Athlon X2 BE-2350. I've made 5 tests using "gtkperf -a".
Cool&Quiet wasn't disabled, so sometimes 1 test is _much_ longer.
Tested configurations: xserver1.4.2+radeonhd1.2.3 with and w/o BackingStore, xserver1.5.0+radeonhd1.2.3 w & w/o backingstore, xserver1.5.0+ati6.9.0 w & w/o backingstore.
Results (in seconds, first value considered as wrong because of C&Q):
1) XServer 1.5.0 + Ati w/o Option "BackingStore" in xorg.conf
15,54 14,49 14,50 14,29 14,96 -> avg=14.56 s
2) XServer 1.5.0 + Ati with BackingStore
15,72 13,10 13,49 13,22 13,29 -> avg=13.28 s
3) XServer 1.5.0 + RadeonHD w/o BackingStore
14,35 14,10 13,95 14,03 13,33 -> avg=13.85 s
4) XServer 1.5.0 + RadeonHD with BackingStore
14,84 13,24 13,78 13,59 14,16 -> avg=13.69 s
5) XServer 1.4.2 + RadeonHD w/o BackingStore
11,93 10,59 10,50 10,09 10,15 -> avg=10.33 (yeah, only 10.33 s!)
6) XServer 1.4.2 + RadeonHD with BackingStore
too slow (> 17 s), garbage on screen
Conclusions.
1) It's faster with backingstore (and man radeon says the same .
2) W/o backingstore RadeonHD is faster than Ati (because of direct programming).
***** But why XServer 1.4.2 is so MUCH faster then 1.5.0?! *****
TODO:
1) test xserver1.4.2 with ati6.8+
2) disable C&Q and make more iterations
3) make some test and write bugreports about troubles with switching from console to X (X11 hangs), and using GL apps (X11 hangs too) (radeonhd only)
4) Upgrade Xserver to 1.5.3. Where can I take a patch?
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