Re: scheduler scalability - cgroups, cpusets and load-balancing

Paul Jackson
2008-01-29T21:02:50Z

Gregory wrote:
> > ... (1) turning off
> > sched_load_balance in any overlapping cpusets, including all
> > encompassing parent cpusets, (2) leaving sched_load_balance on in the
> > RT cpuset itself, and ...
>
> Technically you only need (2). I run my 4-8 core development systems
> in the single default global cpuset, normally.

Well, if you're running in the default cpuset, then you automatically get (1),
because sched_load_balance is turned off in all overlapping cpusets (there
aren't any overlapping cpusets!)

So, yes, you -do- need both (1) and (2). In your normal system, you
just happen to get (1) effortlessly.

--
I won't rest till it's the best ...
Programmer, Linux Scalability
Paul Jackson <pj@sgi.com> 1.940.382.4214