Scheduler starvation (2.5.x, 2.6.0-test1)
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Quoted 4 lines · Simon Kirby
Is anybody else seeing this or is it something to do with my setup here?
Simon-
I see this too, on a much faster system. My browsing habit is to open a link in a new tab, and immediately click on that tab. The mouse gets noticeably jumpy right after clicking the link. I may be jaded by my 2.4.20-gentoo kernel which never did this, but still...
My system is a 2.4 GHz P4 running Gentoo, 2.6.0-test1 (tainted with nVidia), and Mozilla Firebird, with a USB mouse.
Signature · 3 lines
Tom Felker Alchemists became chemists when they stopped keeping secrets.
On Tue, 22 Jul 2003 10:14:46 -0500
Tom Felker <[email protected]> bubbled:
Quoted 6 lines · Simon Kirby
Quoted 4 lines
Is anybody else seeing this or is it something to do with my setup here?
Simon-
Quoted 7 lines
I see this too, on a much faster system. My browsing habit is to open a link in a new tab, and immediately click on that tab. The mouse gets noticeably jumpy right after clicking the link. I may be jaded by my 2.4.20-gentoo kernel which never did this, but still...
My system is a 2.4 GHz P4 running Gentoo, 2.6.0-test1 (tainted with nVidia), and Mozilla Firebird, with a USB mouse.
I have the same problem with 2.6.0-t1-ac2. If I minimize a window, my xmms hangs for a few ms. Same if I browse on some pages and go back/forward.
The screen/windows also fills/draws a little bit slow. (well, could be a X/nvidia problem)
I changed back to 2.4.22-p7 and everything works fine.
Regards,
Martin
ps.:
my machine: P4 2.4Ghz, 512Mb ram, Gentoo, nvidia driver, mozilla 1.4
Signature · 7 lines
MyExcuse: Power company testing new voltage spike (creation) equipment Martin Zwickel <[email protected]> Research & Development TechnoTrend AG <http://www.technotrend.de>
Quoted 7 lines · Martin Zwickel
I have the same problem with 2.6.0-t1-ac2. If I minimize a window, my xmms hangs for a few ms. Same if I browse on some pages and go back/forward.
The screen/windows also fills/draws a little bit slow. (well, could be a X/nvidia problem)I changed back to 2.4.22-p7 and everything works fine.
Could you please test 2.6.0-test1-mm2? It includes some scheduler fixes from Con Kolivas that will help in reducing or eliminating your starvation issues.
Thank you very much!
Quoted 4 lines · Felipe Alfaro Solana
Could you please test 2.6.0-test1-mm2? It includes some scheduler fixes from Con Kolivas that will help in reducing or eliminating your starvation issues.
I was having the same jumpy mouse behaviuor with 2.6.0-test1, and on an otherwise idle Pentium III at 600 MHz box, scrolling a very simple HTML page in Mozilla makes xmms skip audio.
Then I tried 2.6.0-test1-mm2, and several things happened: now scrolling an HTML page in Mozilla seems not to affect MP3 playback with XMMS, but this is the only possitive effect. Focusing windows raises them way slower than in 2.6.0-test1, scheduler starvation is constant (just try to do something like going to another virtual desktop), and then, after several minutes, only XMMS got CPU time, the rest of the applications (at least, those running over X-Window) get stalled.
Hope this helps.
Signature · 2 lines
Jose Luis Domingo Lopez Linux Registered User #189436 Debian Linux Sid (Linux 2.6.0-test1)
Quoted 11 lines · Jose Luis Domingo Lopez
Quoted 4 lines · Felipe Alfaro Solana
Could you please test 2.6.0-test1-mm2? It includes some scheduler fixes from Con Kolivas that will help in reducing or eliminating your starvation issues.
I was having the same jumpy mouse behaviuor with 2.6.0-test1, and on an otherwise idle Pentium III at 600 MHz box, scrolling a very simple HTML page in Mozilla makes xmms skip audio.
Quoted 7 lines
Then I tried 2.6.0-test1-mm2, and several things happened: now scrolling an HTML page in Mozilla seems not to affect MP3 playback with XMMS, but this is the only possitive effect. Focusing windows raises them way slower than in 2.6.0-test1, scheduler starvation is constant (just try to do something like going to another virtual desktop), and then, after several minutes, only XMMS got CPU time, the rest of the applications (at least, those running over X-Window) get stalled.
Yes, I get the same thing with KDE 3.1. Are you using KDE or Gnome? And if so, what version?
Quoted 3 lines · Mike Fedyk
Yes, I get the same thing with KDE 3.1. Are you using KDE or Gnome? And if so, what version?
Debian Sid KDE version 3.1.2 here, and xmms 1.2.7 and Mozilla 1.4 if that matters. I'll try to do some additional test, time permitting.
Regards,
Signature · 2 lines
Jose Luis Domingo Lopez Linux Registered User #189436 Debian Linux Sid (Linux 2.6.0-test1)
Quoted 8 lines · Jose Luis Domingo Lopez
Quoted 4 lines
Could you please test 2.6.0-test1-mm2? It includes some scheduler fixes from Con Kolivas that will help in reducing or eliminating your starvation issues.
I was having the same jumpy mouse behaviuor with 2.6.0-test1, and on an otherwise idle Pentium III at 600 MHz box, scrolling a very simple HTML page in Mozilla makes xmms skip audio.
Quoted 7 lines
Then I tried 2.6.0-test1-mm2, and several things happened: now scrolling an HTML page in Mozilla seems not to affect MP3 playback with XMMS, but this is the only possitive effect. Focusing windows raises them way slower than in 2.6.0-test1, scheduler starvation is constant (just try to do something like going to another virtual desktop), and then, after several minutes, only XMMS got CPU time, the rest of the applications (at least, those running over X-Window) get stalled.
We know there are still some issues and we need help from people like you. It's testing from a big enough user population what allows us to fix things that don't work as expected :-)
If you can, please, keem trying/testing/using the -mm series of the kernel. Con Kolivas is dedicating a lot of effort on the scheduler issus, and I wouldn't like this effort to be useless in the end.
Thanks!
Quoted 3 lines · El 22 Jul 2003 20:41:42 +0200 Felipe Alfaro Solana…
Could you please test 2.6.0-test1-mm2? It includes some scheduler fixes from Con Kolivas that will help in reducing or eliminating your starvation issues.
BTW, if/when you've some free time, you could try 2.5.63. It has the best linux scheduler i've never tried! (for my workload, of course)
It'd be interesting to try to know what has changed since then.