Re: [stable] 2.6.23 regression: top displaying 9999% CPU usage

Christian Borntraeger
2007-10-30T05:56:51Z

Am Montag, 29. Oktober 2007 schrieb Balbir Singh:
> We'll also need this additional patch (untested), but in the long run
> I think the approach needs to be
>
> 1. Update stime and utime at the time of context switching -- keep it
> in sync with p->sum_exec_runtime
> 2. Keep track of system/user context at system call entry points

This is similar to what s390 and ppc64 do when CONFIG_VIRT_CPU_ACCOUNTING is
set. Whenever you do a patch, please make sure to not break the already
precise values for utime and stime on s390 and ppc. Feel free to CC me
whenever you have a patch for this.

Christian