[Kwintv] Re: kdenonbeta/kwintv3/qtvision/plugins/video/v4l

[George Staikos]

On Wednesday 07 January 2004 21:52, Zack Rusin wrote:
> >    You know, the last time I tested I found that XV was faster than
> > XVSHM. Perhaps it was implementation flaws that have since been
> > fixed, or perhaps I had a weird X server or weird hardware, but it
> > could be true that XVSHM isn't all that great.  How does it perform
> > for you?
>
> Most likely it's a MTRR problem. Did you run x11perf --shmput500 to see
> what results you're getting? Compare them to a normal x11perf
> --putimg500.  Shm should always perform faster.

  That's not using Xv though.  XSHM is certainly faster than PutImage.  Where 
I saw slower performance was using SHM together with Xv (XvShm) vs just using 
Xv* calls.

-- 
George Staikos
KDE Developer				http://www.kde.org/
Staikos Computing Services Inc.		http://www.staikos.net/