Ingo Molnar wrote:
>> How reliable does it need to be? All we need is to measure "about 10
>> seconds"; if we can't get that out of it, how can it be good for
>> anything else?
>>
>
> sched_clock(), as its name suggests it, is meant for the scheduler's
> use. The scheduler generally only needs to measure time when the CPU is
> busy - not across idle periods. So sched_clock() can (and will) break
> across certain types of ACPI idle methods.
>
Doesn't that mean it will mis-measure process idle times? Is that a
problem?
J
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