ATI 6.12.4 on ultraSparc runs slow

[Alex Deucher]

2010/3/24 jean-francois simon <jfsimoncasa at gmail.com>:
>
> 2010/3/24 Michel Dänzer <michel at daenzer.net>
>>
>> > so it is PIO not DMA? just curious, where is the code that is doing
>> > that transfer?
>>
>> shadowUpdatePacked() in xserver/miext/shadow/shpacked.c .
>>
>>
> very interesting thanks.
> i can see that this transfer is being triggered by something called  the
> shadow block handler. and i am thinking maybe this is not done often enough,
> thus explaning the slow videos?

More likely the write to vram performance is better on x86 since you
are using write combining.

Alex