Messages in this thread | | | Date | Thu, 5 Jul 2018 12:46:32 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH] sched/cputime: Ensure correct utime and stime proportion |
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On Wed, Jun 27, 2018 at 08:22:42PM +0800, Xunlei Pang wrote: > tick-based whole utime is utime_0, tick-based whole stime > is stime_0, scheduler time is rtime_0.
> For a long time, the process runs mainly in userspace with > run-sleep patterns, and because two different clocks, it > is possible to have the following condition: > rtime_0 < utime_0 (as with little stime_0)
I don't follow... what?
Why are you, and why do you think it makes sense to, compare rtime_0 against utime_0 ?
The [us]time_0 are, per your earlier definition, ticks. They're not an actual measure of time. Do not compare the two, that makes no bloody sense.
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