Messages in this thread |  | | Date | Wed, 11 Aug 2004 19:04:59 -0700 (PDT) | From | <> | Subject | Re: Scheduler fairness problem on 2.6 series (Attn: Nick Piggin and others) |
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--- Con Kolivas <kernel@kolivas.org> wrote: > Hi > > I tried this on the latest staircase patch (7.I) and am not getting any > output from your script when tested up to 60 threads on my hardware. Can you > try this version of staircase please? > > There are 7.I patches against 2.6.8-rc4 and 2.6.8-rc4-mm1 > > http://ck.kolivas.org/patches/2.6/2.6.8/ > > Cheers, > Con >
Just tried on my machine: 2.6.8-rc4 fails all tests (did the test just to be sure)
2.6.8-rc4 with the "from_2.6.8-rc4_to_staircase7.I" patch and things look pretty good: on my hardware, I could put 60 threads too, and my shells are still very responsive etc, and I get no slow downs with my watchdog script.
A few strange things happened though (with 60 threads): * after a few minutes, I got one message Wed Aug 11 18:06:11 PDT 2004 >>>>>>> delta = 57 57 seconds !?! very surprising * shortly after that, I tried to run top, or ps, and they all got stuck, I waited a couple minutes and they were still stuck. I opened a few shells, I could do anything but commands that enumerate the process list. After a while, I killed the cputest program (ctrld c it), and the stucked ps/top continued their execution.
I could not reproduce those problems ; I even rebooted the machine, but only got one message delta of 3 every 30 minutes or so.
Nicolas
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