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From: keith <kmannth@us.ibm.com>
To: Chris Wright <chrisw@osdl.org>
Cc: devnull@us.ibm.com, djwong <djwong@us.ibm.com>,
	Chris McDermott <lcm@us.ibm.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: SELinux performance issue with large systems (32 cpus)
Date: Tue, 23 Nov 2004 13:59:49 -0800	[thread overview]
Message-ID: <1101247189.27848.307.camel@knk> (raw)
In-Reply-To: <20041123125212.E14339@build.pdx.osdl.net>

On Tue, 2004-11-23 at 12:52, Chris Wright wrote:
> * keith (kmannth@us.ibm.com) wrote:
> > I work with i386 16-way systems.  When hyperthreading is enabled they
> > have 32 "cpus".  I recently did a quick performance check on with 2.6
> > (as it turn out with a SElinux enabled) doing kernel builds.  
> 
> Have you tried any recent -mm kernel?  avc_lock was refactored to RCU
> locking, and benchmarks shows it scales quite nicely now.

I just tried 2.6.10-rc2-mm3 on my box.  The patches in mm fix the
avc_lock problem.  The refactoring of the lock worked :)

Thanks,
 Keith Mannthey 
 LTC xSeries


  reply	other threads:[~2004-11-23 22:03 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-11-23 19:22 SELinux performance issue with large systems (32 cpus) keith
2004-11-23 20:52 ` Chris Wright
2004-11-23 21:59   ` keith [this message]
2004-11-23 20:54 ` Stephen Smalley
2004-11-23 20:56 ` Valdis.Kletnieks

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