Messages in this thread |  | | | Subject | Re: [stable] 2.6.23 regression: top displaying 9999% CPU usage | | From | Peter Zijlstra <> | | Date | Mon, 29 Oct 2007 22:11:04 +0100 |
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On Mon, 2007-10-29 at 21:41 +0100, Ingo Molnar wrote: > * Christian Borntraeger <borntraeger@de.ibm.com> wrote: > > > > - 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? > > yeah, probably. Peter?
/me dons the brown paper bag while mumbling an agreement of sorts.
I'll not attempt to come up with a patch as I fear I'll just make a bigger mess in my current state, hope to feel better tomorrow..
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