Messages in this thread | | | Date | Mon, 03 Mar 2003 23:48:07 -0800 | From | "Martin J. Bligh" <> | Subject | Re: xmms (audio) skipping in 2.5 (not 2.4) |
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>> >> So ... is there any easy way I can diagnose this? Does anyone else >> >> have a similar problem? >> > >> > Most of us who have worked with an O(1) scheduler based kernel have >> > found this at various times. See the previous discussion with akpm >> > about the interactivity estimator. Akpm found that decreasing the >> > maximum timeslice duration would blunt the effect of the interactivity >> > estimator giving preference to the "wrong" task. In 2.4.20-ck4 I avoid >> > this problem with the "desktop tuning" of making the max >> > timeslice==min timeslice. Try an -mm kernel with the scheduler >> > tunables patch and try playing with the max timeslice. Most have >> > found that <=25 will usually stop these skips. The default max >> > timeslice of 300ms is just too long for the desktop and interactivity >> > estimator. >> >> Heh, cool. I have the same patch in my tree too, fixed it without >> rebooting even ;-) Still a *tiny* bit of skipping, but infinitely better >> than it was. > > Try decreasing prio_bonus_ratio to 15 as well
Doesn't seem to make much difference, actually. But "waggle scrollbar a bit" isn't very scientific .. ;-) Does contest (or anything else) measure this kind of thing more precisely?
M.
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