linux-kernel - Re: [RFC/RFT PATCH v3] sched: automated per tty task groups

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Message-ID: <1290122978.18039.46.camel@maggy.simson.net>
Date:	Thu, 18 Nov 2010 16:29:38 -0700
From:	Mike Galbraith <efault@....de>
To:	Hans-Peter Jansen <hpj@...la.net>
Cc:	linux-kernel@...r.kernel.org,
	Lennart Poettering <mzxreary@...inter.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>, david@...g.hm,
	Dhaval Giani <dhaval.giani@...il.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Vivek Goyal <vgoyal@...hat.com>,
	Oleg Nesterov <oleg@...hat.com>,
	Markus Trippelsdorf <markus@...ppelsdorf.de>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	Ingo Molnar <mingo@...e.hu>,
	Balbir Singh <balbir@...ux.vnet.ibm.com>
Subject: Re: [RFC/RFT PATCH v3] sched: automated per tty task groups

On Thu, 2010-11-18 at 23:33 +0100, Hans-Peter Jansen wrote:

> If you think, that systemd can solve this and probably other aspects of 
> responsiveness, go for it, compete with it, and _prove_ it with real 
> facts and numbers, not just hand waving.

Of course systemd can do it.  You don't even need systemd, autogroup or
whatever else if you don't mind a little scripting.  There's nothing to
prove, any numbers he generates will be identical with any numbers I
generate... it's the same scheduler whether you configure it from
userspace or kernelspace.

> As already mentioned countless times (and some of it was even renamed 
> for this very fact): the grouping by tty is just a starter. There are

Actually, I switched to setsid alone for now at least, and the only
thing in the root group is kernel threads. 

	-Mike

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