linux-kernel - Re: High priority tasks break SMP balancer?

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Message-ID: <b647ffbd0711171110q9f695e1qb42ba73dc23b626d@mail.gmail.com>
Date:	Sat, 17 Nov 2007 20:10:35 +0100
From:	"Dmitry Adamushko" <dmitry.adamushko@...il.com>
To:	"Micah Dowty" <micah@...are.com>
Cc:	"Ingo Molnar" <mingo@...e.hu>,
	"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,

ok, would it be possible to get "cat /proc/schedstat" output at the
moment when you observe the 'problem'? So we could try to analyze
behavior of the load balancer (yeah, we should have probably started
with this step)

something like this:

(the problem appears)
# cat /proc/schedstat

... wait either a few seconds or until the problem disappears
(whatever comes first)
# cat /proc/schedstat


TIA,

>
> --Micah
>

-- 
Best regards,
Dmitry Adamushko
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