Re: [tip:sched/core] sched: Ensure that a child can't gain timeover it's parent after fork()
From: Mike Galbraith
Date: Tue Sep 08 2009 - 08:42:23 EST
On Tue, 2009年09月08日 at 13:53 +0200, Jens Axboe wrote:
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On Tue, Sep 08 2009, Ingo Molnar wrote:
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>
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> * tip-bot for Mike Galbraith <efault@xxxxxx> wrote:
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>
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> > Commit-ID: b5d9d734a53e0204aab0089079cbde2a1285a38f
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> > Gitweb: http://git.kernel.org/tip/b5d9d734a53e0204aab0089079cbde2a1285a38f
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> > Author: Mike Galbraith <efault@xxxxxx>
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> > AuthorDate: Tue, 8 Sep 2009 11:12:28 +0200
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> > Committer: Ingo Molnar <mingo@xxxxxxx>
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> > CommitDate: Tue, 8 Sep 2009 13:15:34 +0200
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> >
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> > sched: Ensure that a child can't gain time over it's parent after fork()
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> > This improves latencies of make -j<n> kernel build workloads.
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> >
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> > Reported-by: Jens Axboe <jens.axboe@xxxxxxxxxx>
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> Jens, mind trying this patch (or latest tip:master) with your make
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> -j4 workload, does it improve in any way?
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>
Already booted it, makes no real difference... I'm trying with NO_HZ
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disabled now to see if that changes the picture.
Oh well, BTTODB. Thanks for trying it out.
-Mike
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