* Gautham R Shenoy <[EMAIL PROTECTED]> wrote:
> On Wed, Apr 04, 2007 at 12:04:31PM +0200, Ingo Molnar wrote:
> >
> > yeah, i think you are right - and the TASK_UNINTERRUPTIBLE thing is
> > not only quite complex, it also breaks the symmetry of freezer use
> > (sw-suspend obviously cannot freeze uninterruptible tasks). We
> > should watch whether the current latency of freezing is good enough
> > in practice.
>
> Ok. Do you have any specific tests in mind which I can run and post
> the numbers?
>
> As of now, I've been stressing the system with (kernbench + ondemand
> governor) and timing the hotplug operation.
i suspect a fork-intensive application like kernbench should be close to
the worst-case already. A more IO-intensive workload would maximize the
uninterruptible-sleep latencies perhaps?
Ingo
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