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From: Paul Jackson <pj@sgi.com>
To: dino@in.ibm.com
Cc: nickpiggin@yahoo.com.au, Simon.Derr@bull.net,
	linux-kernel@vger.kernel.org, lse-tech@lists.sourceforge.net,
	akpm@osdl.org, dipankar@in.ibm.com, colpatch@us.ibm.com
Subject: Re: [RFC PATCH] Dynamic sched domains aka Isolated cpusets
Date: Tue, 19 Apr 2005 13:42:14 -0700	[thread overview]
Message-ID: <20050419134214.6d885229.pj@sgi.com> (raw)
In-Reply-To: <20050419095230.GC3963@in.ibm.com>

Dinakar wrote:
> Also I think we can add further restrictions in terms not being able
> to change (add/remove) cpus within a isolated cpuset. Instead one would
> have to tear down an existing cpuset and make a new one with the
> required configuration. that would simplify things even further

My earlier reply to this missed the mark a little.

Instead what I would say is this.  If one wants to move a CPU from one
cpuset to another, where these two cpusets are not in the same
partitioned scheduler domain, then one first has to collapse the
scheduler domain partitions so that both cpusets _are_ in the same
partitioned scheduler domain.  Then one can move the CPU between the two
cpusets, and reestablish the more fine grained partitioned scheduler
domain structure that isolates these two cpusets into different
partitioned scheduler domains.

-- 
                  I won't rest till it's the best ...
                  Programmer, Linux Scalability
                  Paul Jackson <pj@engr.sgi.com> 1.650.933.1373, 1.925.600.0401

  parent reply	other threads:[~2005-04-19 20:42 UTC|newest]

Thread overview: 63+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-10-07  0:51 [RFC PATCH] scheduler: Dynamic sched_domains Matthew Dobson
2004-10-07  2:13 ` Nick Piggin
2004-10-07 17:01   ` Jesse Barnes
2004-10-08  5:55     ` [Lse-tech] " Takayoshi Kochi
2004-10-08  6:08       ` Nick Piggin
2004-10-08 16:43         ` Jesse Barnes
2004-10-07 21:58   ` Matthew Dobson
2004-10-08  0:22     ` Nick Piggin
2004-10-07 22:20   ` Matthew Dobson
2004-10-07  4:12 ` [ckrm-tech] " Marc E. Fiuczynski
2004-10-07  5:35   ` Paul Jackson
2004-10-07 22:06   ` Matthew Dobson
2004-10-07  9:32 ` Paul Jackson
2004-10-08 10:14 ` [Lse-tech] " Erich Focht
2004-10-08 10:40   ` Nick Piggin
2004-10-08 15:50     ` [ckrm-tech] " Hubertus Franke
2004-10-08 22:48       ` Matthew Dobson
2004-10-08 18:54     ` Matthew Dobson
2004-10-08 21:56       ` Peter Williams
2004-10-08 22:52         ` Matthew Dobson
2004-10-08 23:13       ` Erich Focht
2004-10-08 23:50         ` Nick Piggin
2004-10-10 12:25           ` Erich Focht
2004-10-08 22:51     ` Erich Focht
2004-10-09  1:05       ` Matthew Dobson
2004-10-10 12:45         ` Erich Focht
2004-10-12 22:45           ` Matthew Dobson
2004-10-08 18:45   ` Matthew Dobson
2005-04-18 20:26 ` [RFC PATCH] Dynamic sched domains aka Isolated cpusets Dinakar Guniguntala
2005-04-18 23:44   ` Nick Piggin
2005-04-19  8:00     ` Dinakar Guniguntala
2005-04-19  5:54   ` Paul Jackson
2005-04-19  6:19     ` Nick Piggin
2005-04-19  6:59       ` Paul Jackson
2005-04-19  7:09         ` Nick Piggin
2005-04-19  7:25           ` Paul Jackson
2005-04-19  7:28           ` Paul Jackson
2005-04-19  7:19       ` Paul Jackson
2005-04-19  7:57         ` Nick Piggin
2005-04-19 20:34           ` Paul Jackson
2005-04-23 23:26             ` Paul Jackson
2005-04-26  0:52               ` Matthew Dobson
2005-04-26  0:59                 ` Paul Jackson
2005-04-19  9:52       ` Dinakar Guniguntala
2005-04-19 15:26         ` Paul Jackson
2005-04-20  7:37           ` Dinakar Guniguntala
2005-04-19 20:42         ` Paul Jackson [this message]
2005-04-19  8:12     ` Simon Derr
2005-04-19 16:19       ` Paul Jackson
2005-04-19  9:34     ` [Lse-tech] " Dinakar Guniguntala
2005-04-19 17:23       ` Paul Jackson
2005-04-20  7:16         ` Dinakar Guniguntala
2005-04-20 19:09           ` Paul Jackson
2005-04-21 16:27             ` Dinakar Guniguntala
2005-04-22 21:26               ` Paul Jackson
2005-04-23  7:24                 ` Dinakar Guniguntala
2005-04-23 22:30               ` Paul Jackson
2005-04-25 11:53                 ` Dinakar Guniguntala
2005-04-25 14:38                   ` Paul Jackson
2005-04-21 17:31   ` [RFC PATCH] Dynamic sched domains aka Isolated cpusets (v0.2) Dinakar Guniguntala
2005-04-22 18:50     ` Paul Jackson
2005-04-22 21:37       ` Paul Jackson
2005-04-23  3:11     ` Paul Jackson

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