From: Peter Zijlstra <peterz@infradead.org>
To: "Alexandre-Xavier Labonté-Lamoureux" <axdoomer@gmail.com>
Cc: linux-kernel@vger.kernel.org, Ingo Molnar <mingo@kernel.org>
Subject: Re: Scheduler patches: 6x performance increase when system is under heavy load
Date: Tue, 13 Dec 2016 14:40:54 +0100 [thread overview]
Message-ID: <20161213134054.GU3207@twins.programming.kicks-ass.net> (raw)
In-Reply-To: <CAKTMqxumNvrmjSgso-n0gAj78Px5uJbwMTgndwWSMEJefz58eQ@mail.gmail.com>
On Sun, Dec 11, 2016 at 04:41:51PM -0500, Alexandre-Xavier Labonté-Lamoureux wrote:
>
> Here are my results (using "time make -j32" on my VM that has 4 cores):
>
> Kernel 4.8.14
> real 26m56.151s
> user 79m52.472s
> sys 7m42.964s
>
> Same kernel, but patched:
> real 4m25.238s
> user 13m52.932s
> sys 1m25.820s
>
> I hope you guys will look into this.
Which of the 4 patches does this?
Also, what hypervisor are you using and what does the output of booting
with "sched_debug" look like?
Lastly, can you reproduce on real hardware?
next prev parent reply other threads:[~2016-12-13 13:40 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-11 21:41 Scheduler patches: 6x performance increase when system is under heavy load Alexandre-Xavier Labonté-Lamoureux
2016-12-13 13:40 ` Peter Zijlstra [this message]
2016-12-14 5:15 ` Alexandre-Xavier Labonté-Lamoureux
2016-12-20 13:59 ` Peter Zijlstra
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