Re: [tip:sched/core] sched: Ensure that a child can't gain time over it's parent after fork()

Jens Axboe
2009-09-08T11:52:59Z

On Tue, Sep 08 2009, Ingo Molnar wrote:
>
> * tip-bot for Mike Galbraith <efault@gmx.de> wrote:
>
> > Commit-ID: b5d9d734a53e0204aab0089079cbde2a1285a38f
> > Gitweb: http://git.kernel.org/tip/b5d9d734a53e0204aab0089079cbde2a1285a38f
> > Author: Mike Galbraith <efault@gmx.de>
> > AuthorDate: Tue, 8 Sep 2009 11:12:28 +0200
> > Committer: Ingo Molnar <mingo@elte.hu>
> > CommitDate: Tue, 8 Sep 2009 13:15:34 +0200
> >
> > sched: Ensure that a child can't gain time over it's parent after fork()
>
> > This improves latencies of make -j<n> kernel build workloads.
> >
> > Reported-by: Jens Axboe <jens.axboe@oracle.com>
>
> Jens, mind trying this patch (or latest tip:master) with your make
> -j4 workload, does it improve in any way?

Already booted it, makes no real difference... I'm trying with NO_HZ
disabled now to see if that changes the picture.

--
Jens Axboe