Re: [RFC PATCH 00/11] sched: CFS low-latency features

Mathieu Desnoyers
2010-08-27T19:57:57Z

* Peter Zijlstra (peterz@infradead.org) wrote:
> On Fri, 2010-08-27 at 14:32 -0400, Mathieu Desnoyers wrote:
> >
> > These are problems you get only when you allow spawning any number of threads.
> > If, instead, you create a thread pool at timer creation, then you can allow
> > concurrency without problems with spawner context and error proparation.
>
> That would be a massive resource waste for the normal case where the
> interval > handler runtime.

Not if the application can configure this value. So the "normal" case could be
set to 1 single thread. Only resource-intensive apps would set this differently,
e.g. to the detected number of cpus.

Mathieu

--
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.