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    SubjectRe: [stable] 2.6.23 regression: top displaying 9999% CPU usage
    Date
    Am Montag, 29. Oktober 2007 schrieb Ingo Molnar:
    > i've got a patch from Peter queued up. (see below) This should fix the
    > main issue.
    [...]
    > --- linux.orig/fs/proc/array.c
    > +++ linux/fs/proc/array.c
    > @@ -358,7 +358,8 @@ static cputime_t task_utime(struct task_
    > }
    > utime = (clock_t)temp;
    >
    > - return clock_t_to_cputime(utime);
    > + p->prev_utime = max(p->prev_utime, clock_t_to_cputime(utime));
    > + return p->prev_utime;
    > }
    [...]

    I dont think it will work. It will make utime monotic, but stime can still
    decrease. For example let sum_exec_runtime increase by a tiny little bit while
    utime will get a full additional tick. stime is sum-utime. So stime can still
    go backwards. So I think that we need this kind of logic for stime as well,
    no?

    Christian



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