linux-kernel - Re: [PATCH, v10 3/3] cgroups: introduce timer slack controller

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Message-ID: <20111017164839.3887ee3e@lxorguk.ukuu.org.uk>
Date:	Mon, 17 Oct 2011 16:48:39 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Matthew Garrett <mjg@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Arjan van de Ven <arjan@...ux.intel.com>,
	Lennart Poettering <mzxreary@...inter.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Kirill A. Shutemov" <kirill@...temov.name>,
	Paul Menage <menage@...gle.com>,
	Li Zefan <lizf@...fujitsu.com>,
	containers@...ts.linux-foundation.org,
	jacob.jun.pan@...ux.intel.com, linux-kernel@...r.kernel.org,
	Matt Helsley <matthltc@...ibm.com>, linux-api@...r.kernel.org,
	Kay Sievers <kay.sievers@...y.org>, harald@...hat.com,
	david@...ar.dk, greg@...ah.com
Subject: Re: [PATCH, v10 3/3] cgroups: introduce timer slack controller

> Hard enforcement is very much better than papering over because it makes
> the individual developer instantly aware that he's got a problem.

Not always

If you do weird container crap with timers than app authors will simply
point out that the weird container crap is buggy as it works properly in
a normal environment.

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