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Subject: Re: CFS Bandwidth Control - Test results of cgroups tasks pinned vs
 unpinnede
From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
Cc: Paul Turner <pjt@google.com>,
        Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>,
        Vladimir Davydov <vdavydov@parallels.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Bharata B Rao <bharata@linux.vnet.ibm.com>,
        Dhaval Giani <dhaval.giani@gmail.com>,
        Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>,
        Ingo Molnar <mingo@elte.hu>, Pavel Emelianov <xemul@parallels.com>
Date: Tue, 13 Sep 2011 20:03:04 +0200
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On Tue, 2011-09-13 at 23:24 +0530, Srivatsa Vaddagiri wrote:
> Fyi, we have added additional levels to cgroup setup
> (/Level1/Level2/C1/C1_1 etc) to mimic cgroup hierarchy for VMS as
> created by libvirt. 

The deeper you nest the bigger the numerical problems get.. 

Also, can you please stop using virt crap and focus on useful
things? :-) Start with simple cases of single depth groups.