Messages in this thread | | | From | Con Kolivas <> | Subject | Re: [RFC][PATCH] SCHED_ISO for interactivity | Date | Sun, 13 Jul 2003 22:53:12 +1000 |
| |
On Sun, 13 Jul 2003 20:41, Guillaume Chazarain wrote: > Hi Con, > > I am currently testing SCHED_ISO, but I have noticed a regression: > I do a make -j5 in linux-2.5.75/ everything is OK since gcc prio is 25. > X and fvwm prio are 15, but when I move a window it's very jerky.
Interesting. I don't know how much smaller the timeslice can be before different hardware will be affected. Can you report what cpu and video card you're using? Unfortunately I don't have a range of hardware to test it on and I chose the aggressive 1/5th timeslice size. Can you try with ISO_PENALTY set to 2 instead?
> And btw, as I am interested in scheduler improvements, do you have a > testcase where the stock scheduler does the bad thing? Preferably without > KDE nor Mozilla (I don't have them installed, and I'll have access to a > decent connection in september).
Transparency and antialiased fonts are good triggers. Launcing Xterm with transparency has been known to cause skips. Also the obvious make -j 4 kernel compiles, and while true ; do a=2 ; done as a fast onset full cpu hog
> BTW2, you all seem to test interactivity with xmms. Just for those like me > that didn't noticed, I have just found that it skips much less with alsa's > OSS emulation than with alsa-xmms.
Anything that increases the signal to noise ratio at helping us pick up skips/problems is useful, but this can help those that _don't_ want skips so thanks.
> Thanks,
Thank you very much for testing and reporting.
Con
- 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/
| |