From: Paul Jackson <pj@sgi.com>
To: Andi Kleen <ak@suse.de>
Cc: Lee.Schermerhorn@hp.com, rientjes@google.com, clameter@sgi.com,
akpm@linux-foundation.org, linux-kernel@vger.kernel.org
Subject: Re: [patch 2/2] cpusets: add interleave_over_allowed option
Date: Mon, 29 Oct 2007 15:48:54 -0700 [thread overview]
Message-ID: <20071029154854.81fd606d.pj@sgi.com> (raw)
In-Reply-To: <200710292208.30033.ak@suse.de>
> So the user space asks for 8 nodes because it knows the machine
> has that many from /sys and it only gets 4 if a cpuset says so? That's
> just bad semantics. And is not likely to make the user programs happy.
That's no different than what can happen today -- if a task actually
is in an 8 node cpuset, sets up its mempolicies accordingly, and then
gets shoe horned into a 4 node cpuset.
It's not good or bad; it's just interactions between two mechanisms.
If your app doesn't run well in a small cpuset, don't run it there
(or do run it there, poorly ;).
--
I won't rest till it's the best ...
Programmer, Linux Scalability
Paul Jackson <pj@sgi.com> 1.925.600.0401
next prev parent reply other threads:[~2007-10-29 22:49 UTC|newest]
Thread overview: 98+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-25 22:54 [patch 1/2] cpusets: extract mmarray loading from update_nodemask David Rientjes
2007-10-25 22:54 ` [patch 2/2] cpusets: add interleave_over_allowed option David Rientjes
2007-10-25 23:37 ` Christoph Lameter
2007-10-25 23:56 ` David Rientjes
2007-10-26 0:28 ` Christoph Lameter
2007-10-26 1:55 ` Paul Jackson
2007-10-26 2:11 ` David Rientjes
2007-10-26 2:29 ` Paul Jackson
2007-10-26 2:45 ` David Rientjes
2007-10-26 3:14 ` Paul Jackson
2007-10-26 3:58 ` David Rientjes
2007-10-26 4:34 ` Paul Jackson
2007-10-26 15:37 ` Lee Schermerhorn
2007-10-26 17:04 ` Paul Jackson
2007-10-26 17:28 ` Lee Schermerhorn
2007-10-26 20:21 ` Michael Kerrisk
2007-10-26 20:25 ` Paul Jackson
2007-10-26 20:33 ` Michael Kerrisk
2007-10-26 15:30 ` Lee Schermerhorn
2007-10-26 18:46 ` David Rientjes
2007-10-26 19:00 ` Paul Jackson
2007-10-26 20:45 ` David Rientjes
2007-10-26 21:05 ` Christoph Lameter
2007-10-26 21:08 ` David Rientjes
2007-10-26 21:12 ` Christoph Lameter
2007-10-26 21:15 ` David Rientjes
2007-10-26 21:13 ` Lee Schermerhorn
2007-10-26 21:17 ` Christoph Lameter
2007-10-26 21:26 ` Lee Schermerhorn
2007-10-26 21:37 ` Christoph Lameter
2007-10-29 15:00 ` Lee Schermerhorn
2007-10-29 17:33 ` Paul Jackson
2007-10-29 17:46 ` Lee Schermerhorn
2007-10-29 20:35 ` Christoph Lameter
2007-10-26 21:18 ` David Rientjes
2007-10-26 21:31 ` Lee Schermerhorn
2007-10-26 21:39 ` David Rientjes
2007-10-27 1:07 ` Paul Jackson
2007-10-27 1:26 ` Christoph Lameter
2007-10-27 2:41 ` Paul Jackson
2007-10-27 2:50 ` Christoph Lameter
2007-10-27 5:16 ` Paul Jackson
2007-10-27 6:07 ` Christoph Lameter
2007-10-27 8:36 ` Paul Jackson
2007-10-27 17:47 ` Christoph Lameter
2007-10-27 20:59 ` Paul Jackson
2007-10-27 17:50 ` David Rientjes
2007-10-27 23:19 ` Paul Jackson
2007-10-28 18:19 ` David Rientjes
2007-10-28 23:46 ` Paul Jackson
2007-10-29 1:04 ` David Rientjes
2007-10-29 4:27 ` Paul Jackson
2007-10-29 4:47 ` David Rientjes
2007-10-29 5:45 ` Paul Jackson
2007-10-29 7:00 ` David Rientjes
2007-10-29 7:26 ` Paul Jackson
2007-10-30 22:53 ` David Rientjes
2007-10-30 23:17 ` Paul Jackson
2007-10-30 23:25 ` David Rientjes
2007-10-31 0:03 ` Paul Jackson
2007-10-31 0:05 ` Paul Jackson
2007-10-29 7:15 ` Paul Jackson
2007-10-30 23:12 ` David Rientjes
2007-10-30 23:44 ` Paul Jackson
2007-10-30 23:53 ` David Rientjes
2007-10-31 0:29 ` Paul Jackson
2007-10-29 16:54 ` Lee Schermerhorn
2007-10-29 19:40 ` Paul Jackson
2007-10-29 19:45 ` Paul Jackson
2007-10-29 19:57 ` Paul Jackson
2007-10-29 20:02 ` Paul Jackson
2007-10-27 17:45 ` David Rientjes
2007-10-27 21:22 ` Paul Jackson
2007-10-29 15:10 ` Lee Schermerhorn
2007-10-29 18:41 ` Paul Jackson
2007-10-29 19:01 ` Lee Schermerhorn
2007-10-30 23:17 ` David Rientjes
2007-10-31 0:03 ` Paul Jackson
2007-10-30 22:57 ` David Rientjes
2007-10-30 23:46 ` Paul Jackson
2007-10-26 20:43 ` Lee Schermerhorn
2007-10-26 15:18 ` Lee Schermerhorn
2007-10-26 17:36 ` Christoph Lameter
2007-10-26 18:45 ` David Rientjes
2007-10-26 19:02 ` Paul Jackson
2007-10-27 19:16 ` David Rientjes
2007-10-29 16:23 ` Lee Schermerhorn
2007-10-29 17:35 ` Andi Kleen
2007-10-29 19:35 ` Paul Jackson
2007-10-29 20:36 ` Christoph Lameter
2007-10-29 21:08 ` Andi Kleen
2007-10-29 22:48 ` Paul Jackson [this message]
2007-10-30 19:47 ` Paul Jackson
2007-10-30 20:20 ` Lee Schermerhorn
2007-10-30 20:26 ` Paul Jackson
2007-10-30 20:27 ` Andi Kleen
2007-10-26 1:13 ` Paul Jackson
2007-10-26 1:30 ` David Rientjes
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