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Message-ID: <AANLkTinaJU_=MuCcefOweED5g2HMpHjUra8nR6mBdoyR@mail.gmail.com> Date: Tue, 12 Oct 2010 00:01:35 +0300 From: Felipe Contreras <felipe.contreras@...il.com> To: Calvin Walton <calvin.walton@...il.com> Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, linux-btrfs@...r.kernel.org, Chris Mason <chris.mason@...cle.com> Subject: Re: Horrible btrfs performance on cold cache On Mon, Oct 11, 2010 at 6:46 PM, Calvin Walton <calvin.walton@...il.com> wrote: > On Mon, 2010-10-11 at 03:30 +0300, Felipe Contreras wrote: >> I use btrfs on most of my volumes on my laptop, and I've always felt >> booting was very slow, but definitely sure is slow, is starting up >> Google Chrome: >> >> encrypted ext4: ~20s >> btrfs: ~2:11s >> >> I have tried different things to find out exactly what is the issue, >> but haven't quite found it yet. > > If you've been using this volume for a while, it could just have become > badly fragmented. You could try btrfs's fancy online defragmentation > abilities to see if that'll give you an improvement: > > # btrfs filesystem defragment /mountpoint/of/volume > > Let us know if that helps, of course :) ~2:06s, so it helped a bit, but not much really, there's still something fishy going on. -- Felipe Contreras -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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