From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp06.smtpout.orange.fr ([80.12.242.128]:59691 "EHLO smtp.smtpout.orange.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751581Ab2JHGQG (ORCPT ); Mon, 8 Oct 2012 02:16:06 -0400 Message-ID: <50726FA3.7050608@petaramesh.org> Date: Mon, 08 Oct 2012 08:16:03 +0200 From: =?UTF-8?B?U3fDom1pIFBldGFyYW1lc2g=?= MIME-Version: 1.0 To: Martin Steigerwald CC: linux-btrfs@vger.kernel.org Subject: Re: BTRFS, getting darn slower everyday References: <50714AC8.4010100@petaramesh.org> <201210071259.05801.Martin@lichtvoll.de> <50718C44.2080701@petaramesh.org> (sfid-20121007_163444_636745_E6F75E74) <201210071648.54027.Martin@lichtvoll.de> In-Reply-To: <201210071648.54027.Martin@lichtvoll.de> Content-Type: text/plain; charset=UTF-8 Sender: linux-btrfs-owner@vger.kernel.org List-ID: Hi Martin, Le 07/10/2012 16:48, Martin Steigerwald a écrit : > Where is this volume pool located on? On which drive(s)? All the concerned machines are laptops with a single physical HD... > This could be 100 or more subvolumes / snapshots. > > Maybe slowness could be related to this one. That's a good estimation... I'm not sure if there is any theoretical reason why the number of snapshots of a given volume might slow down access to this volume ? > It would be good to have some capture of this slowness with > > vmstat 10 > > iostat -xd 10 /your/device I will try to give you some figures. But when the machine starts really crawling, it becomes very hard to start any new program unless it's "finished being slow", so that's not so easy... > Also how much RAM has the machine? What does free -m / cat /proc/meminfo > tell. The 4 concerned machines have either 4GB or 2GB RAM. None is heavily loaded as far as RAM is concerned (just booting into a standard Ubuntu GUI and then accessing emailn, browser, office applications etc.) Kind regards. -- Swâmi Petaramesh http://petaramesh.org PGP 9076E32E Ne cherchez pas : Je ne suis pas sur Facebook.