From: "Kaigai Kohei" <kaigai@ak.jp.nec.com>
To: "James Morris" <jmorris@redhat.com>
Cc: "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: Wed, 25 Aug 2004 18:51:56 +0900 [thread overview]
Message-ID: <024c01c48a89$283dd4f0$f97d220a@linux.bs1.fc.nec.co.jp> (raw)
In-Reply-To: <Xine.LNX.4.44.0408240908530.19614-100000@thoron.boston.redhat.com>
Hi James, thanks for your comment.
> > o dbench [ 4 processes run parallely on 4-CPUs / 10 times trials ]
> > ---- mean ---- - STD -
> > 2.6.8.1(disable) 860.249 [MB/s] 44.683
> > 2.6.8.1(enable) 714.254 [MB/s] 32.359
> > 2.6.8.1(+rwlock) 767.904 [MB/s] 27.968
> > 2.6.8.1(+RCU) 830.678 [MB/s] 16.352
>
> Can you show the figures for 1 and 2 clients?
The results are as follows:
o dbench [ 1/2/4 processes run parallely on 4-CPUs / 10 times trials ]
- Average[MB/s] - -1proc- -2procs- -4procs-
2.6.8.1(disable) 247.43 473.11 891.51
2.6.8.1(enable) 218.99 434.97 761.06
2.6.8.1(+rwlock) 225.18 432.80 802.62
2.6.8.1(+RCU) 231.84 444.30 820.00
--------------------------------------------
(*) 2.6.8.1(+RCU) is applied the take3-patch.
By the way, the results of dbench are sharply changed at every measurement.
I don't think it is statistically-significant.
--------
Kai Gai <kaigai@ak.jp.nec.com>
next prev parent reply other threads:[~2004-08-25 9:54 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-16 9:33 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 [this message]
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 ` RCU issue with SELinux (Re: SELINUX performance issues) Luke Kenneth Casson Leighton
2004-08-20 18:15 ` 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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