From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263842AbUEXCm3 (ORCPT ); Sun, 23 May 2004 22:42:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263843AbUEXCm1 (ORCPT ); Sun, 23 May 2004 22:42:27 -0400 Received: from smtp017.mail.yahoo.com ([216.136.174.114]:46165 "HELO smtp017.mail.yahoo.com") by vger.kernel.org with SMTP id S263842AbUEXCmX (ORCPT ); Sun, 23 May 2004 22:42:23 -0400 Message-ID: <40B16105.8060500@yahoo.com.au> Date: Mon, 24 May 2004 12:42:13 +1000 From: Nick Piggin User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040401 Debian/1.6-4 X-Accept-Language: en MIME-Version: 1.0 To: Phy Prabab CC: William Lee Irwin III , Jakob Oestergaard , linux-kernel@vger.kernel.org Subject: Re: Help understanding slow down References: <20040524015153.32010.qmail@web90003.mail.scd.yahoo.com> In-Reply-To: <20040524015153.32010.qmail@web90003.mail.scd.yahoo.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Phy Prabab wrote: > Okay, so ran the test with vmstat running. I ran it > capturing every 1 sec. Here is an excert: > > procs memory swap > io system cpu > r b swpd free buff cache si so bi bo in cs us sy id wa > 1 0 0 8153848 17000 82348 0 0 0 0 4568 4028 6 16 78 0 > 0 1 0 8154168 17008 82340 0 0 0 160 4596 4079 7 17 76 1 > 1 0 0 8153848 17008 82340 0 0 0 0 4511 3998 7 16 76 0 > 1 0 0 8153912 17008 82340 0 0 0 0 4460 3952 7 14 79 0 > 1 0 0 8153784 17016 82332 0 0 0 0 4437 3962 7 16 77 0 > 1 0 0 8153528 17016 82332 0 0 0 0 4444 3927 7 14 78 0 > 1 1 0 8153784 17024 82392 0 0 0 144 4399 3895 7 15 77 1 > 0 0 0 8153592 17024 82392 0 0 0 0 4367 3821 7 15 78 0 > 1 0 0 8153848 17024 82392 0 0 0 0 4393 3926 6 16 78 0 > 1 0 0 8153528 17024 82460 0 0 0 0 4438 3960 8 14 78 0 > 1 0 0 8154040 17024 82460 0 0 0 0 4415 3912 6 15 78 0 > 1 1 0 8153720 17032 82452 0 0 0 140 4457 3953 7 15 77 1 > 1 0 0 8153784 17032 82452 0 0 0 0 4437 3889 7 14 79 0 > 0 0 0 8153784 17040 82444 0 0 0 0 4398 3903 8 15 77 0 > 1 0 0 8153464 17040 82444 0 0 0 0 4398 3902 7 14 79 0 > 0 0 0 8153528 17040 82444 0 0 0 0 4447 3922 6 17 77 0 > 0 1 0 8153720 17052 82432 0 0 0 144 4490 3960 6 16 77 1 > 0 0 0 8153656 17056 82428 0 0 0 0 4449 3954 7 15 78 0 > Funny, you are basically not doing any IO at all. How many CPUs are in your system? As WLI noted, 2.6 is still taking more system time, so a profile might still be useful.