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    SubjectRe: [stable] 2.6.23 regression: top displaying 9999% CPU usage
    Frans Pop wrote:
    > On Tuesday 16 October 2007, Balbir Singh wrote:
    >> I am trying to think out loud as to what the root cause of the problem
    >> might be. In one of the discussion threads, I saw utime going backwards,
    >> which seemed very odd, I suspect that those are rounding errors.
    > I only remembered stime going backwards, but looking back at the mails
    > you are right, there has been one case of utime going backwards too.
    > stime going backwards happens _much_ more frequently.
    >> I have tried and not had any success reproducing the problem, could you
    >> please help me with some pointers/steps to reproduce the problem?
    > I can reproduce the problem reliably for two KDE programs I have running
    > permanently on my system: kontact and amarok. Both of these wake up
    > regularly and use some (not very much) processor capacity before going to
    > sleep again. Any process that has that that characteristic should do.
    > /me thinks a bit and tries something
    > lol - I have just managed to reproduce this with 'top' itself :-P

    Thanks, I know why I am not seeing the problem. My box has
    CONFIG_VIRT_CPU_ACCOUNTING set. I'll find another box and try.

    Warm Regards,
    Balbir Singh
    Linux Technology Center
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      Last update: 2007-10-16 12:41    [W:0.029 / U:14.992 seconds]
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