Messages in this thread | | | Subject | Re: [RFC][PATCH] Multimedia scheduling class, take 2 | From | Peter Zijlstra <> | Date | Tue, 12 May 2009 13:19:12 +0200 |
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On Tue, 2009-05-12 at 13:07 +0300, Jussi Laako wrote: > Peter Zijlstra wrote: > > I certainly don't think the current situation is bad enough to warrant > > things like that, media on my machines works peachy (*cheer* for XV on > > R600). > > By the way, here's a good test case for a desktop, preferably UP: > - run something like this in a loop: > find / -type f -exec grep asd "{}" ";" > - run x11perf * numcpus in a loop > - run glxgears * numcpus > - go to youtube frontpage with a web browser > - start for example "totem" mediaplayer and play full-HD H.264 movie > > Does the movie playback and audio go smoothly? Can you play youtube HD > videos smoothly?
I don't know about youtube, that flash thing doesn't seem to deliver full hd content, and I'm not sure where to click, but playing a full-hd trailer from the network using vlc seems to work just fine with 4 x11perf and 4 glxgears and that find thing.
There is an occasional stutter, but not much.
Thing is, adding static preemption priories into SCHED_OTHER (which is basically what you propose I think) doesn't really help, I can still load the machine high enough so that there simply isn't time available to decode the frames while maintaining proportional fairness -- no matter how preemptive you get.
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