Re: [PATCH] Preemption Latency Measurement Tool

Roger Larsson
2001-09-21T02:14:13Z

Continuing to follow up to myself...

> >
> > Hmm..
> >
> > The yield we do in __alloc_pages is it really correct?
> > 1. Suppose it is not we that are the problem.
> > 2. Suppose there are lots of other processes that gets to run.
> > 3. If kswapd had higher prio, it would start to run without us giving
> > up...
> >
> > I have to try...
>
> They were already gone in -pre12!
> But I was running -pre10...
> Others?
> Dieter is running -pre12...
> I will test it anyways...
>

Unexpected result, but interesting.
Things got MUCH WORSE!
>From nearly no problem to hardly enjoyable.
(pre10 with preemptive kernel but no schedule in __alloc_pages,
actual if statement removed)
Maybe it is closer to what Dieter gets...

/RogerL

--
Roger Larsson
Skellefteå
Sweden