From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cuda.sgi.com (cuda2.sgi.com [192.48.176.25]) by oss.sgi.com (8.14.3/8.14.3/SuSE Linux 0.8) with ESMTP id q25330YN089307 for ; Sun, 4 Mar 2012 21:03:00 -0600 Received: from ipmail07.adl2.internode.on.net (ipmail07.adl2.internode.on.net [150.101.137.131]) by cuda.sgi.com with ESMTP id zigUI2GAr1pC936N for ; Sun, 04 Mar 2012 19:02:56 -0800 (PST) Date: Mon, 5 Mar 2012 14:02:54 +1100 From: Dave Chinner Subject: Re: Poor performance using discard Message-ID: <20120305030254.GA3592@dastard> References: <1330469778.9688.7.camel@core24> <20120229012259.GW3592@dastard> <1330480826.9688.23.camel@core24> <20120229040819.GZ3592@dastard> <1330702910.6438.40.camel@core24> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1330702910.6438.40.camel@core24> 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: Thomas Lynema Cc: xfs@oss.sgi.com On Fri, Mar 02, 2012 at 10:41:50AM -0500, Thomas Lynema wrote: > Peter was right then. Per multiple recommendations > I'm switching to fstrim, it is quicker than the deletes. > > fstrim consistently takes about a minute to run on a 40GB > volume. > > time fstrim -v /usr > /usr: 9047117824 bytes were trimmed > > real 0m56.121s > user 0m0.090s > sys 0m0.000s > > I see that the running of fstrim was already discussed > http://oss.sgi.com/archives/xfs/2011-05/msg00338.html. > > Please add something to the FAQ about using SSDs. It would be great if > people could see the recommended mount options and fstrim crontab entry > (or other option) for running xfs on a SSD. It's a publicly modifiable wiki. Feel free to add what you've learned here to a new FAQ entry - others will come by and correct anything in it that is inaccurate.... Cheers, Dave. -- Dave Chinner david@fromorbit.com _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs