On Tuesday 27 May 2003 13:18, you wrote:
> This _might_ be related to the O_SYNC bug discussed in the "Athlon
> related mystery" thread on the devel list, please read the archive at
> http://www.mail-archive.com/devel%40xfree86.org/
>
> (Don't let yourself be missguided by the thread name)
>
> Thomas
>
> Hans Korneder wrote:
> > Hello,
> >
> > sending XvImages through XvShmPutImage to my Radeon-Card with
> > XFree-4.3.99.4 takes twice the time it takes with XFree-4.3.0 on the same
> > box.
> >
> > It first came out during playing videos with mplayer
> > which shows some kind of timing-statistics which suddenly changed
> > heavily, but I reduced it to the XvShmPutImage() (see attached demo
> > program).

Thanks for the hint.
Removing O_SYNC when opening /dev/mem works for me,
at least on my specific processor/board combination.

Hans
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