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From: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
To: Andi Kleen <andi@firstfloor.org>
Cc: kosaki.motohiro@jp.fujitsu.com,
	Yinghai Lu <yhlu.kernel@gmail.com>,
	David Rientjes <rientjes@google.com>,
	Chris Worley <worleys@gmail.com>,
	linux-kernel@vger.kernel.org
Subject: Re: Off topic: Numactl "distance" wrong
Date: Tue,  7 Apr 2009 11:52:56 +0900 (JST)	[thread overview]
Message-ID: <20090407111539.F0F5.A69D9226@jp.fujitsu.com> (raw)
In-Reply-To: <87r609jtc2.fsf@basil.nowhere.org>

> That's not enough. You would need to redo all the zone fallback tables
> in the VM that are initialized based on topology, do new scheduler
> topologies and all kind of other stuff.

I think this is very good viewpoint.

The rebuilding zone fallback table and scheduler topologies need to add
new lock.

Oh well, who need memory and scheduler performance regression?
Then, its /sys interface isn't so useful.


I don't think the manual setting of node distance improve
opteron's (or another small machine) performance.




  parent reply	other threads:[~2009-04-07  2:53 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-04-03 20:02 Chris Worley
2009-04-03 20:16 ` Brice Goglin
2009-04-03 20:49   ` Yinghai Lu
2009-04-03 21:01     ` Cliff Wickman
2009-04-03 21:43       ` Yinghai Lu
2009-04-03 21:24 ` Andi Kleen
2009-04-03 21:43   ` David Rientjes
2009-04-03 21:48     ` Yinghai Lu
2009-04-03 21:52       ` David Rientjes
2009-04-03 21:55       ` Andi Kleen
2009-04-03 22:15         ` Yinghai Lu
2009-04-07  2:52         ` KOSAKI Motohiro [this message]
2009-04-07  6:17           ` Brice Goglin
2009-04-07  7:05             ` Andi Kleen
2009-04-07  7:40               ` Brice Goglin
2009-04-07  7:56                 ` Andi Kleen
2009-04-07  7:44               ` David Rientjes
2009-04-07  7:59                 ` Andi Kleen
2009-04-07  8:08                   ` David Rientjes
2009-04-07  8:23                     ` Andi Kleen
2009-04-07  8:30                       ` David Rientjes
2009-04-07  9:13                         ` Andi Kleen
2009-04-03 21:53     ` Andi Kleen
2009-04-03 21:54       ` David Rientjes
2009-04-03 22:18         ` Yinghai Lu

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