linux-kernel - Re: [RFC PATCH 00/32] Nohz cpusets (was: Nohz Tasks)

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Message-ID: <CAOtvUMe7PphJtMoGRVUQf9zok+0H1VyS1TAckTJXfJ9p8MHyBA@mail.gmail.com>
Date:	Wed, 31 Aug 2011 17:00:13 +0300
From:	Gilad Ben-Yossef <gilad@...yossef.com>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	Mike Galbraith <efault@....de>,
	Frederic Weisbecker <fweisbec@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Anton Blanchard <anton@....ibm.com>,
	Avi Kivity <avi@...hat.com>, Ingo Molnar <mingo@...e.hu>,
	Lai Jiangshan <laijs@...fujitsu.com>,
	"Paul E . McKenney" <paulmck@...ux.vnet.ibm.com>,
	Paul Menage <menage@...gle.com>,
	Stephen Hemminger <shemminger@...tta.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Tim Pepper <lnxninja@...ux.vnet.ibm.com>
Subject: Re: [RFC PATCH 00/32] Nohz cpusets (was: Nohz Tasks)

>> > cpusets? Afaict all it does is not include a number of cpus in the sched

I think you meant to write cpuisol here :-)

>> > domains, creating a bunch of independent scheduling cpus. You can use
>> > cpusets to get to the same state.

>>
>> Guess I'll have to try creating a cpuset per cpu, and see how it
>> compares to isolcpus.  cset shield --cpu 4-63 didn't work well enough.
>
> You need to play with the sched_load_balance file, no idea what this
> cset utility is though, never encountered it before.
>

It's just a python wrapper around the /cgroup file system.

Gilad

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Gilad Ben-Yossef
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