linux-kernel - Re: [PATCH 3/3] pids: Make it possible to clone tasks with given pids

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Date:	Fri, 11 Nov 2011 20:18:19 +0400
From:	Pavel Emelyanov <xemul@...allels.com>
To:	Tejun Heo <tj@...nel.org>
CC:	Oleg Nesterov <oleg@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Cyrill Gorcunov <gorcunov@...nvz.org>,
	Glauber Costa <glommer@...allels.com>,
	Nathan Lynch <ntl@...ox.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Serge Hallyn <serue@...ibm.com>,
	Daniel Lezcano <dlezcano@...ibm.com>
Subject: Re: [PATCH 3/3] pids: Make it possible to clone tasks with given
 pids

On 11/11/2011 08:10 PM, Tejun Heo wrote:
>> It's highly unlikely that the ability to fork in parallel would
>> contribute to any meaningful speedup. That is not the critical path by
>> *far*
> 
> To add a bit, it's also one of the more *serialized* path. Doing it in
> parallel might actually hurt, 

Can you elaborate on this, please?

> so if losing the ability to do it makes it less intrusive, that's the 
> better way.
> 

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