Messages in this thread | | | Date | Thu, 19 Jun 2003 00:32:48 +0200 | From | Mike Galbraith <> | Subject | Re: O(1) scheduler starvation |
| |
At 11:30 PM 6/18/2003 +0200, Felipe Alfaro Solana wrote: >On Wed, 2003-06-18 at 17:54, Mike Galbraith wrote: > > >To make XMMS skip, just force the X server to do a lot of repainting, > > >for example, by dragging a big window slowly enough over another one > > >which requires a lot of painting (Evolution, for example, is a good > > >candidate as it requires a lot of CPU to repaint uncovered areas). It's > > >easy to reproduce just after launching XMMS. However, after a while, it > > >gets difficult to make XMMS to skip sound (it seems the scheduler > > >adjusts priorities well enough). This is on a PIII 700Mhz laptop with no > > >niced processes at all. > > > > Thanks. I don't have evolution on my linux box (pine/vi/procmail > > rules). ImageMagic ought to give X more than enough spurts of frenetic > > activity though. Do you have that, and does image manipulation make xmms > > stutter as well? Just moving windows around and changing backgrounds > > doesn't do anything here. (500mhz piii/128mb ram btw) > >In fact, I can only make XMMS skip sound for a very brief period, just >after starting it up. After a few seconds, it seems the dynamic >priorities are adjusted and I can't make XMMS skip sound anymore. To >reproduce it, open up a big window, then launch XMMS and make it play >some MP3 file. Then, start moving the big window around. For me, this >causes XMMS to skip sound for a brief period of time (~5 seconds, >approx).
If you bump CHILD_PENALTY up (to say 75) you should see a marked improvement.
-Mike
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |