From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cuda.sgi.com (cuda3.sgi.com [192.48.176.15]) by oss.sgi.com (8.14.3/8.14.3/SuSE Linux 0.8) with ESMTP id o6KH66fA031248 for ; Tue, 20 Jul 2010 12:06:07 -0500 Received: from greer.hardwarefreak.com (localhost [127.0.0.1]) by cuda.sgi.com (Spam Firewall) with ESMTP id 3D1331B8B73B for ; Tue, 20 Jul 2010 10:09:06 -0700 (PDT) Received: from greer.hardwarefreak.com (mo-65-41-216-221.sta.embarqhsd.net [65.41.216.221]) by cuda.sgi.com with ESMTP id WCZQ9SNe7xCmd5CE for ; Tue, 20 Jul 2010 10:09:06 -0700 (PDT) Received: from [192.168.100.53] (gffx.hardwarefreak.com [192.168.100.53]) by greer.hardwarefreak.com (Postfix) with ESMTP id 858606C011 for ; Tue, 20 Jul 2010 12:09:06 -0500 (CDT) Message-ID: <4C45D831.5010102@hardwarefreak.com> Date: Tue, 20 Jul 2010 12:09:05 -0500 From: Stan Hoeppner MIME-Version: 1.0 Subject: Re: Slow delete References: <201007121417.14097@zmi.at> <1279565697.1855.136.camel@doink> <201007201304.28490@zmi.at> In-Reply-To: <201007201304.28490@zmi.at> 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 Sender: xfs-bounces@oss.sgi.com Errors-To: xfs-bounces@oss.sgi.com To: xfs@oss.sgi.com Michael Monnerie put forth on 7/20/2010 6:04 AM: > Can someone guess the exact problems that can happen with delayed > transaction on a crash? The only real crash scenario difference, as I understand it, is that with delayed logging enabled you'll potentially lose more data due to crash as more is held memory resident with delayed logging enabled. The characteristics of the data loss are the same with and without this enabled, it's just potentially more severe with delayed logging enabled. If your systems are prone to power loss, hardware failures, or kernel panics, I'd not enable delayed logging. If your systems are rock solid, and you can benefit from the minor decrease in file fragmentation and the increase in mass file delete speed, then enable it. -- Stan _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs