From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from relay.sgi.com (relay1.corp.sgi.com [137.38.102.111]) by oss.sgi.com (Postfix) with ESMTP id 859417FBB for ; Sun, 17 Feb 2013 09:50:48 -0600 (CST) Received: from cuda.sgi.com (cuda2.sgi.com [192.48.176.25]) by relay1.corp.sgi.com (Postfix) with ESMTP id 7168A8F8035 for ; Sun, 17 Feb 2013 07:50:48 -0800 (PST) Received: from mail-wg0-f66.google.com (mail-wg0-f66.google.com [74.125.82.66]) by cuda.sgi.com with ESMTP id FzJd4ysUzFtm9RND (version=TLSv1 cipher=RC4-SHA bits=128 verify=NO) for ; Sun, 17 Feb 2013 07:50:47 -0800 (PST) Received: by mail-wg0-f66.google.com with SMTP id 16so1047887wgi.1 for ; Sun, 17 Feb 2013 07:50:46 -0800 (PST) MIME-Version: 1.0 Date: Sun, 17 Feb 2013 21:20:46 +0530 Message-ID: Subject: High %user CPU in XFS From: Subranshu Patel List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: xfs-bounces@oss.sgi.com Sender: xfs-bounces@oss.sgi.com To: xfs@oss.sgi.com I created 2 filesystem on my system (RHEL 6.3, kernel 2.6.32) - XFS and EXT4 and mounted them. On both the filesystem I executed a program which performed the following: - Create large number of directories - Removing all the directories During the execution of the program, I monitored the %user and %system CPU usage (using sar command) For EXT4 the %user was 1% and %system was 21% For XFS the %user was 20% and %system was 52% But I am not able to understand %user consumption, since %user reports the CPU usage of the user level (application), shouldn't it be the same for both EXT4 and XFS? What are the factors that decide the %user component keeping in mind that only the filesystem is different? _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs