Jun Sun wrote:
>
> I did a very simple timing experiement: measure the interval between
> two consequtive calls to schedule() function.
>
> Under light load situation, the maximum interval is around 10ms which is
> the time slicing interval. However, if I increase the load (actually I
> was running NIST POSIX test suite), the maximum interval could go
> up to 210ms.
>
> Is this possbile? Should the kernel at very least obey the time
> slicing,
> which I expect schedule() should be called no more than every 10ms.
the scheduler only gets called when potentially there's something
else to schedule, the current thread uses up its quantum (~200ms) or blocks.
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