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

Mike Galbraith
2009-09-08T12:42:15Z

On Tue, 2009-09-08 at 13:53 +0200, Jens Axboe wrote:
> 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.

Oh well, BTTODB. Thanks for trying it out.

-Mike