From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
To: Kaigai Kohei <kaigai@ak.jp.nec.com>
Cc: James Morris <jmorris@redhat.com>,
Stephen Smalley <sds@epoch.ncsc.mil>,
"SELinux-ML(Eng)" <selinux@tycho.nsa.gov>,
"Linux Kernel ML(Eng)" <linux-kernel@vger.kernel.org>
Subject: Re: RCU issue with SELinux (Re: SELINUX performance issues)
Date: Fri, 20 Aug 2004 18:31:24 +0100 [thread overview]
Message-ID: <20040820173124.GA11086@lkcl.net> (raw)
In-Reply-To: <032901c486ba$a3478970$f97d220a@linux.bs1.fc.nec.co.jp>
On Fri, Aug 20, 2004 at 10:36:03PM +0900, Kaigai Kohei wrote:
> Hello, everyone.
>
> Tuesday, August 17, 2004 12:19 AM
> James Morris wrote:
> > > Is removing direct reference to AVC-Entry approach acceptable?
> > >
> > > I'll try to consider this issue further.
> >
> > Sure, if you can make it work without problems.
>
> The attached patches against to 2.6.8.1 kernel improve the performance
> and the scalability of SELinux by RCU-approach.
>
> The evaluation results are as follows:
> <Environment>
> CPU: Itanium2(1GHz) x 4/8/16/32
> Memory: enough (no swap)
> OS: 2.6.8.1 (SELinux disabled by 'selinux=0' boot option)
> 2.6.8.1 (SELinux enabled)
> 2.6.8.1 + rwlock patch by KaiGai
> 2.6.8.1 + RCU patch by KaiGai
>
> The test program iterates write() to files on tmpfs 500,000 times in parallel.
^^^^^
i presume that that is without the xattr patch which adds extended
attributes to tmpfs?
(see http://hands.com/~lkcl/selinux)
l.
next prev parent reply other threads:[~2004-08-20 17:20 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-16 9:33 RCU issue with SELinux (Re: SELINUX performance issues) Kaigai Kohei
2004-08-16 15:19 ` James Morris
2004-08-20 13:36 ` Kaigai Kohei
2004-08-20 14:53 ` James Morris
2004-08-24 7:27 ` Kaigai Kohei
2004-08-24 13:24 ` James Morris
2004-08-25 9:51 ` Kaigai Kohei
2004-08-25 18:31 ` James Morris
2004-08-25 9:52 ` [PATCH]atomic_inc_return() for i386/x86_64 (Re: RCU issue with SELinux) Kaigai Kohei
2004-08-20 17:31 ` Luke Kenneth Casson Leighton [this message]
2004-08-20 18:15 ` RCU issue with SELinux (Re: SELINUX performance issues) James Morris
2004-08-20 20:19 ` Paul E. McKenney
2004-08-20 20:35 ` James Morris
2004-08-24 7:27 ` Kaigai Kohei
[not found] ` <1093014789.16585.186.camel@moss-spartans.epoch.ncsc.mil>
2004-08-24 7:25 ` Kaigai Kohei
2004-08-24 15:37 ` Stephen Smalley
2004-08-25 9:51 ` Kaigai Kohei
2004-08-25 15:50 ` Stephen Smalley
2004-08-25 16:11 ` Stephen Smalley
2004-08-26 7:53 ` Kaigai Kohei
2004-08-26 13:24 ` Stephen Smalley
2004-08-27 11:07 ` Kaigai Kohei
2004-08-30 11:17 ` [PATCH]SELinux performance improvement by RCU (Re: RCU issue with SELinux) Kaigai Kohei
2004-08-30 15:35 ` Stephen Smalley
2004-08-30 16:13 ` Paul E. McKenney
2004-08-31 4:33 ` Kaigai Kohei
2004-08-31 16:20 ` Paul E. McKenney
2004-08-31 15:33 ` James Morris
2004-08-24 23:02 ` RCU issue with SELinux (Re: SELINUX performance issues) Paul E. McKenney
2004-08-25 9:51 ` Kaigai Kohei
2004-08-25 17:34 ` Paul E. McKenney
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