linux-kernel - Re: BFS vs. mainline scheduler benchmarks and measurements

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Message-ID: <dda83e780909100912t45eeeb9cj5179edda565526bc@mail.gmail.com>
Date:	Thu, 10 Sep 2009 09:12:11 -0700
From:	Bret Towe <magnade@...il.com>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	Ingo Molnar <mingo@...e.hu>, Nikos Chantziaras <realnc@...or.de>,
	Jens Axboe <jens.axboe@...cle.com>,
	Mike Galbraith <efault@....de>,
	Con Kolivas <kernel@...ivas.org>, linux-kernel@...r.kernel.org
Subject: Re: BFS vs. mainline scheduler benchmarks and measurements

On Thu, Sep 10, 2009 at 9:05 AM, Peter Zijlstra <a.p.zijlstra@...llo.nl> wrote:
> On Thu, 2009-09-10 at 09:02 -0700, Bret Towe wrote:
>>
>> thanks to this thread and others I've seen several kernel tunables
>> that can effect how the scheduler performs/acts
>> but what I don't see after a bit of looking is where all these are
>> documented
>> perhaps thats also part of the reason there are unhappy people with
>> the current code in the kernel just because they don't know how
>> to tune it for their workload
>
> The thing is, ideally they should not need to poke at these. These knobs
> are under CONFIG_SCHED_DEBUG, and that is exactly what they are for.

even then I would think they should be documented so people can find out
what item is hurting their workload so they can better report the bug no?

>
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