From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:24467 "EHLO mx0b-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753952Ab3LDSKA (ORCPT ); Wed, 4 Dec 2013 13:10:00 -0500 Date: Wed, 4 Dec 2013 09:49:09 -0800 From: Josef Bacik To: Adam Gradzki CC: Subject: Re: btrfs-cleaner leaves CPU pinned to 100% Message-ID: <20131204174909.GA6675@fb.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" In-Reply-To: Sender: linux-btrfs-owner@vger.kernel.org List-ID: Adam Gradzki wrote on Wed [2013-Dec-04 15:27:58 +0000]: > Adam G gmail.com> writes: > > > > > Hello, > > > > After a recent kernel upgrade I noticed the fans blowing at full > > throttle on my laptop. > > > > There is currently very low load on the machine and nothing out of the > > ordinary has occurred to lead me to believe this is normal behavior. > > > > Here is a link to the perf output I managed to capture > > > > http://pastebin.com/a5cAy7Dw > > > > Please let me know if I may be of any further assistance. > > > > Regards, > > > > Adam Gradzki > > -- > > To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in > > the body of a message to majordomo vger.kernel.org > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > > > > > I would like to add an updated perf report I took shortly after the first > one yesterday (600 seconds this time). > > http://www.pastebin.ca/2492119 > > Removing autodefrag from /etc/fstab has ameliorated my troubles for the time > being. > Do you have a lot of snapshots? I'm working on this currently so hopefully it will be fixed soon. If you have issues again can you use perf record -g so it pulls the stacktraces and then you can drill down before you post so I can figure out where we're spending all of our time. Thanks, Josef