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Message-ID: <20071120055755.GE20436@elte.hu>
Date: Tue, 20 Nov 2007 06:57:55 +0100
From: Ingo Molnar <mingo@...e.hu>
To: Micah Dowty <micah@...are.com>
Cc: Dmitry Adamushko <dmitry.adamushko@...il.com>,
Christoph Lameter <clameter@....com>,
Kyle Moffett <mrmacman_g4@....com>,
Cyrus Massoumi <cyrusm@....net>,
LKML Kernel <linux-kernel@...r.kernel.org>,
Andrew Morton <akpm@...l.org>, Mike Galbraith <efault@....de>,
Paul Menage <menage@...gle.com>,
Peter Williams <pwil3058@...pond.net.au>
Subject: Re: High priority tasks break SMP balancer?
* Micah Dowty <micah@...are.com> wrote:
> > this one is being triggered whenever a cpu becomes idle (schedule()
> > --> idle_balance() --> load_balance_newidle()).
> >
> > (this flag is a bit #1 == 2)
> >
> > cat /proc/sys/kernel/sched_domain/cpu0/domain0/flags
>
> Hmm. I don't have this file on my system:
>
> root@...ah-64:/proc/sys/kernel/sched_domain/cpu0/domain0# ls
> busy_factor busy_idx forkexec_idx idle_idx imbalance_pct max_interval min_interval newidle_idx wake_idx
> root@...ah-64:/proc/sys/kernel/sched_domain/cpu0/domain0# uname -a
> Linux micah-64 2.6.23.1 #1 SMP Fri Nov 2 12:25:47 PDT 2007 x86_64 GNU/Linux
>
> Is there a config option I'm missing?
yes, CONFIG_SCHED_DEBUG.
Ingo
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