Re: [patch] preempt-timing-on-2.6.8-rc2-O2

Lee Revell
2004-08-08T02:47:07Z

On Sat, 2004-08-07 at 22:39, William Lee Irwin III wrote:
> On Sat, 2004-08-07 at 22:33, William Lee Irwin III wrote:
> >> This seems to be 996us spent in do_IRQ() when it interrupts idle tasks.
>
> On Sat, Aug 07, 2004 at 10:36:55PM -0400, Lee Revell wrote:
> > I am not sure I understand how preemption can be disabled for 996us and
> > not cause an xrun.
>
> You were idling at the time, so the latency affected nothing, except
> perhaps task migration on SMP.
>

Would it be possible to detect this situation and treat it like a
preemptible section, just so the sheer volume of printks does not cause
a problem?

Lee