linux-kernel - Re: [announce] CFS-devel, performance improvements

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Message-ID: <6b8cef970709130243y328edc4br87496cf260bef3@mail.gmail.com>
Date:	Thu, 13 Sep 2007 05:43:11 -0400
From:	"Rob Hussey" <robjhussey@...il.com>
To:	"Ingo Molnar" <mingo@...e.hu>
Cc:	linux-kernel@...r.kernel.org,
	"Peter Zijlstra" <a.p.zijlstra@...llo.nl>,
	"Mike Galbraith" <efault@....de>,
	"Roman Zippel" <zippel@...ux-m68k.org>
Subject: Re: [announce] CFS-devel, performance improvements

On 9/13/07, Rob Hussey <robjhussey@...il.com> wrote:
> On 9/13/07, Ingo Molnar <mingo@...e.hu> wrote:
> >
> > * Rob Hussey <robjhussey@...il.com> wrote:
> >
> > > On 9/13/07, Ingo Molnar <mingo@...e.hu> wrote:
> > > >
> > > > thanks for the numbers! Could you please also post the .config you used?
> > >
> > > Sure, .config for 2.6.23-rc1 and 2.6.23-rc6 attached.
> >
> > thx! If you've got some time, could you perhaps re-measure with these
> > disabled:
> >
> >   CONFIG_SCHED_DEBUG=y
>
> Well, I was going over my config myself after you asked for me to post
> it, and I thought to do the same thing. Except, disabling sched_debug
> caused the same error as before:
> In file included from kernel/sched.c:794:
> kernel/sched_fair.c: In function 'task_new_fair':
> kernel/sched_fair.c:857: error: 'sysctl_sched_child_runs_first'
> undeclared (first use in this function)
> kernel/sched_fair.c:857: error: (Each undeclared identifier is
> reported only once
> kernel/sched_fair.c:857: error: for each function it appears in.)
> make[1]: *** [kernel/sched.o] Error 1
> make: *** [kernel] Error 2
>
> It only happens with sched_debug=y. I take it back, it wasn't my fault :)
>
I'm trying the patches now to see if they help.
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