From mboxrd@z Thu Jan 1 00:00:00 1970 From: James Cloos Subject: Re: 2.6.33 high cpu usage Date: Tue, 02 Mar 2010 15:12:59 -0500 Message-ID: References: <20100302195322.GA3201@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-btrfs@vger.kernel.org To: Josef Bacik Return-path: In-Reply-To: <20100302195322.GA3201@localhost.localdomain> (Josef Bacik's message of "Tue, 2 Mar 2010 14:53:23 -0500") List-ID: >>>>> "Josef" == Josef Bacik writes: >> As you can see btrfs_find_space_cluster(), find_next_bit() and >> find_next_zero_bit() use most of the sys cpu. That patterns seems to >> hold whenever I run perf top during such operations. Josef> Ok well thats a bummer. Would you mind trying this completely untested Josef> and uncompiled patch :)? It is compiling now. I might not be able to reboot until tonight. And I'll want to do another incremental backup of the fs. (I'm using it in production in part because it only has mirrors, checkouts and the like and because I have that backup.) I'll reply again once I have results. -JimC -- James Cloos OpenPGP: 1024D/ED7DAEA6