Messages in this thread | | | Subject | Re: [PATCH] O3int interactivity for 2.5.74-mm2 | From | Felipe Alfaro Solana <> | Date | 06 Jul 2003 20:36:50 +0200 |
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On Sun, 2003-07-06 at 19:16, Con Kolivas wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Attached is an incremental patch against 2.5.74-mm2 with more interactivity > work. Audio should be quite resistant to skips with this, and it should not > induce further unfairness. > > Changes: > The sleep_avg buffer was not needed with the improved semantics in O2int so it > has been removed entirely as it created regressions in O2int. > > A small change to the idle detection code to only make tasks with enough > accumulated sleep_avg become idle. > > Minor cleanups and clarified code. > > > Other issues: > Jerky mouse with heavy page rendering in web browsers remains. This is a > different issue to the audio and will need some more thought. > > The patch is also available for download here: > http://kernel.kolivas.org/2.5 > > Note for those who wish to get smooth X desktop feel now for their own use, > the granularity patch on that website will do wonders on top of O3int, but a > different approach will be needed for mainstream consumption.
I'm seeing extreme X starvation with this patch under 2.5.74-mm2 when starting a CPU hogger:
1. Start a KDE session. 2. Launch a Konsole 3. Launch Konqueror 4. Launch XMMS 5. Make XMMS play an MP3 file 6. On the Konsole terminal, run "while true; do a=2; done"
When the "while..." is run, X starves completely for ~5 seconds (e.g. the mouse cursor doesn't respond to my input events). After those 5 seconds, the mouse cursor goes jerky for a while (~2 seconds) and then the system gets responsive.
PS: There are no user processes reniced.
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