From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tomasz Torcz Subject: Re: yum upgrade on btrfs very slow Date: Tue, 29 Sep 2009 08:18:22 +0200 Message-ID: <20090929061822.GB15930@mother.pipebreaker.pl> References: <20090928121827.GA15930@mother.pipebreaker.pl> <20090928133543.GB6405@think> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii To: linux-btrfs@vger.kernel.org Return-path: In-Reply-To: <20090928133543.GB6405@think> List-ID: On Mon, Sep 28, 2009 at 09:35:43AM -0400, Chris Mason wrote: > On Mon, Sep 28, 2009 at 02:18:27PM +0200, Tomasz Torcz wrote: > > > > Hi, > > > > I'm using btrfs as rootfs on my Fedora 12 (rawhide) test system. > > Every yum activity is very slow, like 15 minutes for installation of 11 > > packages 25MB in size. Kernel is 2.6.31.1-48.fc12.x86_64, btrfs-progs-0.19-7.fc12.x86_64. > > Hardware is pentium 4 3.0 GHz (Hyperthreading, 64 bit), with single IDE disk > > on Intel ICH controller. > > You're doing quite a lot of reads, and some writes. Could you please > capture the output of sysrq-w at 5s intervals during the upgrade? It got quite big (over 100 KiB, over 1 MiB after unpacking), so I put it at http://pipebreaker.pl/dump/sysrq-w_every_5_sec.txt.bz2 -- Tomasz Torcz Only gods can safely risk perfection, xmpp: zdzichubg@chrome.pl it's a dangerous thing for a man. -- Alia