linux-kernel - Re: [PATCHSET RFC cgroup/for-4.6] cgroup, sched: implement resource group and PRIO

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Message-ID: <20160407064036.GG3430@twins.programming.kicks-ass.net>
Date:	Thu, 7 Apr 2016 08:40:36 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Tejun Heo <tj@...nel.org>
Cc:	Michal Hocko <mhocko@...nel.org>, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, mingo@...hat.com, lizefan@...wei.com,
	hannes@...xchg.org, pjt@...gle.com, linux-kernel@...r.kernel.org,
	cgroups@...r.kernel.org, linux-api@...r.kernel.org,
	kernel-team@...com
Subject: Re: [PATCHSET RFC cgroup/for-4.6] cgroup, sched: implement resource
 group and PRIO_RGRP

On Wed, Apr 06, 2016 at 05:53:07PM -0400, Tejun Heo wrote:
> Can you list applications which make use of CLONE_VM without
> CLONE_THREAD? 

I ran into one two years ago or so; I forgot what it was, but it made
perf misbehave because we too had assumed this not to happen.

Eventually it turned out a newer version of that software did no longer
do this and we more or less left it at that.

But it does show that crap is out there..