[Nouveau] [Bug 25966] nv25 : rxvt scrolling is very slow

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=25966





--- Comment #20 from Francisco Jerez <currojerez at riseup.net>  2010-02-12 11:18:24 PST ---
(In reply to comment #19)
> And for the record in nouveau_exa_download_from_screen, that memcpy [1] (line
> 140) that take 90% of time.
> 
DFS is most likely being triggered by X11 GetImage requests. A comparison of
"x11perf -getimage500" results would be interesting. 

> [1] 
>     45dd:       f3 a5                   rep movsl %ds:(%esi),%es:(%edi)
> 


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