Re: Major 2.4 / 2.{5|6}-smp Scheduler Slow-ness

From: Andrew Morton (akpm_at_osdl.org)
Date: 07/31/03

  • Next message: Eugene Teo: "Re: 2.6.0t2 Hangs randomly" 
    Date:	Wed, 30 Jul 2003 17:36:44 -0700
To: root <root@rachel.trevorj.com>

    root <root@rachel.trevorj.com> wrote:
    >
    > Ok, first of all, I have never been able to run a 2.4 kernel on this
    > machine, it runs _very_ slow. By slow, i mean it takes literally HOURS
    > to boot. I have tried 2.4.20,2.4.21, and also both with the openmosix
    > patches.
    >
    > Now, the 2.5/6 kernel runs beautifully, so i have been running both
    > vanilla, and vanilla+mm patches, both run fine. Although, using the smp
    > scheduler makes it do the exact same thing as 2.4, albeit a little
    > faster. So this leads me into thinking *very*
    > much so that this is a scheduler issue.

    boot with "profile=1", learn to use readprofile, post the results.

    irq 21: nobody cared!
    ...
    handlers:
    [<c8a37620>] (snd_emu10k1_interrupt+0x0/0x3f0 [snd_emu10k1])
    Disabling IRQ #21

    This is fishy. Try removing the sound driver from the kernel altogether.
    And any other unneeded-to-boot drivers, come to that.

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  • Next message: Eugene Teo: "Re: 2.6.0t2 Hangs randomly"

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