Re: [patch] sched: introduce SD_BALANCE_FORK for ht/mc/smp domains

Ingo Molnar
2007-07-29T21:17:30Z

* Siddha, Suresh B <suresh.b.siddha@intel.com> wrote:

> They might be doing more exec's and probably covered by exec balance.
>
> There was a small pthread test case which was calculating the time to
> create all the threads and how much time each thread took to start
> running. It appeared as if the threads ran sequentially one after
> another on a DP system with four cores leading to this SD_BALANCE_FORK
> observation.

would be nice to dig out that testcase i suspect and quantify the
benefits of your patch. Another workload which might perform better
would be linpack: it benefits from fast and immediate 'spreading' of
freshly forked threads.

Ingo