Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753725AbYKMLqu (ORCPT ); Thu, 13 Nov 2008 06:46:50 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751975AbYKMLqm (ORCPT ); Thu, 13 Nov 2008 06:46:42 -0500 Received: from pyxis.i-cable.com ([203.83.115.105]:62814 "HELO pyxis.i-cable.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1750966AbYKMLql (ORCPT ); Thu, 13 Nov 2008 06:46:41 -0500 Message-ID: <001f01c94585$799bf280$0a01a8c0@kylecea1512a3f> From: "kyle" To: "Rahul Pydimukkala" Cc: References: <009401c9454c$6e3a8610$b902a8c0@kyle> <20081113143404.GC12750@csews22.cse.iitk.ac.in> Subject: Re: apache threads not balanced over all CPU cores, schedular problem or apache? Date: Thu, 13 Nov 2008 19:46:32 +0800 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="ISO-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2668 Lines: 61 From: "Rahul Pydimukkala" To: "kyle" Cc: Sent: Thursday, November 13, 2008 10:34 PM Subject: Re: apache threads not balanced over all CPU cores, schedular problem or apache? > On 12:58 Thu 13 Nov , kyle wrote: >> Hi, >> >> Please cc me if possible. >> >> I have a machine with Intel Q9300 4-core CPU, 8GB RAM. It runs apache >> 2.0.63 >> with traditional prefork MPM. > > Yes, this is quite undesirable given that the kernel has a good > load-balancer. Can you give more information regarding the kernel version > and load stats of individual apache processes as well? > - > Rahul > They now all load on cpu1 and cpu2. top - 19:35:42 up 8 days, 22:36, 8 users, load average: 1.77, 1.63, 1.75 Tasks: 251 total, 2 running, 249 sleeping, 0 stopped, 0 zombie Cpu0 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu1 : 14.1%us, 4.4%sy, 0.0%ni, 52.9%id, 27.2%wa, 0.0%hi, 1.5%si, 0.0%st Cpu2 : 4.3%us, 2.9%sy, 0.0%ni, 92.3%id, 0.0%wa, 0.0%hi, 0.5%si, 0.0%st Cpu3 : 0.5%us, 0.5%sy, 0.0%ni, 98.0%id, 1.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 8117172k total, 8029032k used, 88140k free, 373356k buffers Swap: 208824k total, 8576k used, 200248k free, 5884936k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ P COMMAND 15112 nobody 20 0 199m 10m 7344 S 2.5 0.1 0:00.94 2 httpd 14488 nobody 20 0 208m 17m 8400 S 2.0 0.2 0:02.06 1 httpd 15184 nobody 20 0 203m 12m 7652 S 2.0 0.2 0:00.69 1 httpd 15320 nobody 20 0 199m 9736 6556 S 2.0 0.1 0:00.29 2 httpd 15466 nobody 20 0 201m 9424 4684 S 2.0 0.1 0:00.05 2 httpd 15204 nobody 20 0 201m 10m 7380 S 1.5 0.1 0:00.66 2 httpd 15051 nobody 20 0 203m 12m 7716 S 1.0 0.2 0:01.43 2 httpd 15059 nobody 20 0 204m 13m 9232 S 1.0 0.2 0:01.22 2 httpd 15081 nobody 20 0 203m 12m 7724 S 1.0 0.2 0:00.95 2 httpd 15319 nobody 20 0 202m 12m 6376 S 1.0 0.2 0:00.26 1 httpd 15465 nobody 20 0 199m 8448 5396 S 1.0 0.1 0:00.05 2 httpd 15467 nobody 20 0 200m 8872 4568 S 1.0 0.1 0:00.02 2 httpd 12215 nobody 20 0 202m 13m 9756 S 0.5 0.2 0:05.54 2 httpd 13052 nobody 20 0 205m 14m 9.8m S 0.5 0.2 0:04.36 2 httpd 13433 nobody 20 0 203m 14m 9564 S 0.5 0.2 0:05.25 1 httpd -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/