linux-kernel - Re: [RFD] cgroup: about multiple hierarchies

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Message-ID: <1330687394.11248.222.camel@twins>
Date:	Fri, 02 Mar 2012 12:23:14 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Michal Schmidt <mschmidt@...hat.com>
Cc:	Vivek Goyal <vgoyal@...hat.com>, Tejun Heo <tj@...nel.org>,
	Li Zefan <lizf@...fujitsu.com>,
	containers@...ts.linux-foundation.org, cgroups@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Kay Sievers <kay.sievers@...y.org>,
	Lennart Poettering <lennart@...ttering.net>,
	Frederic Weisbecker <fweisbec@...il.com>,
	linux-kernel@...r.kernel.org, Christoph Hellwig <hch@...radead.org>
Subject: Re: [RFD] cgroup: about multiple hierarchies

On Fri, 2012-03-02 at 12:08 +0100, Michal Schmidt wrote:
> And what exactly do you mean by booting? Obviously not booting into a 
> full desktop environment, because that requires a lot of features.

Nah, who needs that stuff anyway :-) Note that even my desktop and
laptop work fine without initrd, systemd and CONFIG_CGROUP nonsense. And
while they are bloated with useless crap like *Kit and others, simply
because I can't get myself to rebuild enough to get rid of the
dependencies, I utterly hate them being around.

> If on the other hand you are satisfied with booting into a getty with 
> not many services around, in this sense systemd will boot without 
> CONFIG_CGROUPS. 

Except that it waits a random amount of time, long enough for me to
think the machine didn't come back up and power cycle again. The random
delay is _waay_ longer than a regular reboot cycle and totally destroys
the usability.

> It's recommended not to do that and nobody actively 
> tests this setup, but at least systemd will not abort. So it can be used 
> to check if the kernel boots and to run some tests. 

So you don't recommend people use server type setups? Quality
engineering that!
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