I found another symptom of "freezes with Radeon" problem.
It looks like getimage is very slow.
Compare:
P-IV 1.8ghz, Radeon 1002:5144 AGP x11perf -getimage500
Sync time adjustment is 0.0418 msecs.
20 reps @ 207.6316 msec ( 4.8/sec): GetImage 500x500 square
20 reps @ 248.5548 msec ( 4.0/sec): GetImage 500x500 square
20 reps @ 208.7967 msec ( 4.8/sec): GetImage 500x500 square
20 reps @ 248.4327 msec ( 4.0/sec): GetImage 500x500 square
20 reps @ 207.6785 msec ( 4.8/sec): GetImage 500x500 square
100 trep @ 224.2189 msec ( 4.5/sec): GetImage 500x500 square
Versus:
PIII-800mhz, Rage Mobility M3 AGP x11perf -getimage500
Sync time adjustment is 0.0535 msecs.
80 reps @ 63.9693 msec ( 15.6/sec): GetImage 500x500 square
80 reps @ 71.2674 msec ( 14.0/sec): GetImage 500x500 square
80 reps @ 63.9885 msec ( 15.6/sec): GetImage 500x500 square
80 reps @ 71.2154 msec ( 14.0/sec): GetImage 500x500 square
80 reps @ 64.0236 msec ( 15.6/sec): GetImage 500x500 square
400 trep @ 66.8928 msec ( 14.9/sec): GetImage 500x500 square
-getimagexy500 is even slower (0.4 sec and 0.9 sec correspondingly), but I
guess, this is due to the additional workload required.
All of -copypixpix500, -copypixwin500, -copywinwin500 and -copywinpix500
give good results on both computers (around 1200/sec for Radeon card,
slightly below 1000/sec for Rage Mobility M3).
I believe that slow getimage will cripple perfomance of pagers that
attempt to make window snapshots.
Any thoughts on fixing this ? (Yes, I know that DMA would be ideal,
but besides that, why would copying off Radeon card be slower than R128 ?
Does anyone know of any substantial differences between BX and i850 in
this regard ?)
thanks
Vladimir Dergachev
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