From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp04.smtpout.orange.fr ([80.12.242.126]:34964 "EHLO smtp.smtpout.orange.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750857Ab2JHQPy (ORCPT ); Mon, 8 Oct 2012 12:15:54 -0400 Message-ID: <5072FC37.8090105@petaramesh.org> Date: Mon, 08 Oct 2012 18:15:51 +0200 From: =?ISO-8859-1?Q?Sw=E2mi_Petaramesh?= MIME-Version: 1.0 To: Josef Bacik CC: "linux-btrfs@vger.kernel.org" Subject: Re: BTRFS, getting darn slower everyday References: <50714AC8.4010100@petaramesh.org> <20121008160933.GA2259@localhost.localdomain> In-Reply-To: <20121008160933.GA2259@localhost.localdomain> Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-btrfs-owner@vger.kernel.org List-ID: Le 08/10/2012 18:09, Josef Bacik a écrit : > Can you get sysrq+w when you are seeing slowness? Usually bootup slow times > means you don't have space_cache enabled or your cache is being evicted for some > reason, can you check dmesg after bootup for messages related to space cache? > Thanks, I have a few : Oct 8 15:27:26 tethys kernel: [16174.736603] btrfs: free space inode generation (0) did not match free space cache generation (106988) Oct 8 15:27:27 tethys kernel: [16175.976784] btrfs: free space inode generation (0) did not match free space cache generation (30727) Oct 8 15:27:28 tethys kernel: [16176.420719] btrfs: free space inode generation (0) did not match free space cache generation (48040) Oct 8 15:27:28 tethys kernel: [16176.710972] btrfs: free space inode generation (0) did not match free space cache generation (30745) ...in syslog, but that's about all... and not during boot... I used to have much much more of these in syslog, but solved it by booting once with the "clear_cache" option, that caused boot to be extremely slow, but seemed to fix it... (Remember I have such issues on several machines, it is highly improbable that all of them would get their cache ignored...?) Kind regards. -- Swâmi Petaramesh http://petaramesh.org PGP 9076E32E Ne cherchez pas : Je ne suis pas sur Facebook.