Re: RFC: THE OFFLINE SCHEDULER

raz ben yehuda
2009-08-26T21:37:49Z

On Wed, 2009-08-26 at 15:15 -0600, Chris Friesen wrote:
> On 08/26/2009 02:50 PM, Andrew Morton wrote:
>
> > What problem?
> >
> > All I've seen is "I want 100% access to a CPU". That's not a problem
> > statement - it's an implementation.
> >
> > What is the problem statement?
>
> I can only speak for myself...
>
> In our case the problem statement was that we had an inherently
> single-threaded emulator app that we wanted to push as hard as
> absolutely possible.
>
> We gave it as close to a whole cpu as we could using cpu and irq
> affinity and we used message queues in shared memory to allow another
> cpu to handle I/O. In our case we still had kernel threads running on
> the app cpu, but if we'd had a straightforward way to avoid them we
> would have used it.
>
> Chris
Chris. I offer myself to help anyone wishes to apply OFFSCHED.