[lkml]   [2007]   [May]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [patch] CFS scheduler, -v13
On Friday 18 May 2007 15:56:07 Ingo Molnar wrote:
> * Anant Nitya <> wrote:
> > Hi
> >
> > Been testing this version of CFS from last an hour or so and still
> > facing same lag problems while browsing sites with heavy JS and or
> > flash usage. Mouse movement is pathetic and audio starts to skip. I
> > haven't face this behavior with CFS till v11.
> i have just tried 5 different versions of the Flash plugin and i cannot
> reproduce this (flash games are still smooth and acceptable even with
> the system significantly overloaded with 5 infite loops or with a kernel
> build), so it would be nice if you could help me debug this problem.
> The last version that worked for you was v11, correct? The biggest v11
> -> v12 change was the yield workaround, and while testing your workload
> i also noticed that all Flash versions except the latest one (9.0 r31)
> use sys_sched_yield() quite frequently. So it would be nice to know
> which plugin version you are using (and which Firefox version): you can
> check that by typing about:plugins into firefox. Furthermore, could you
> also try the following tune:
I am using konqueror and about:plugins gives back this information regarding
Shockwave Flash Shockwave Flash 9.0 r31
application/x-shockwave-flash - Shockwave Flash (swf)
application/futuresplash - FutureSplash Player (spl)
> echo 0 > /proc/sys/kernel/sched_yield_bug_workaround
> and this:
> echo 2 > /proc/sys/kernel/sched_yield_bug_workaround
These values do visibly makes browsing smooth but it still lags though lag
time is less compared to original values.

> if none of this changes behavior then please send me the output of the
> following:
> strace -ttt -TTT -o strace.txt -f -p `pidof firefox-bin`
> < reproduce the lag in firefox >
> < Ctrl-C the strace >
> and send me the strace.txt file (off-line, it's going to be large).
> Thanks,
I am sending you all these information off list.


To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2007-05-18 20:25    [W:0.272 / U:0.792 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site