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

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Message-ID: <1318837019.6594.29.camel@twins>
Date:	Mon, 17 Oct 2011 09:36:58 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Arjan van de Ven <arjan@...ux.intel.com>
Cc:	Matthew Garrett <mjg@...hat.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>,
	Thomas Gleixner <tglx@...utronix.de>,
	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

On Sun, 2011-10-16 at 22:21 -0700, Arjan van de Ven wrote:
> and..it's not like we let the bad guys go free.
> We actually seriously hurt their behavior while we throttle their timers 
> here. 

How are they hurt? The app appears to behave properly (there are no
repercussions, the app doesn't crash, the developer doesn't get punched
in the face). This doesn't make the developer improve his app, nor make
him take greater care for the next app.

Such behaviour will in fact encourage crap since he seems to be getting
away with it.
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