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Date: Wed, 22 Dec 2010 12:39:15 -0800 From: Andy Isaacson <adi@...apodia.org> To: Felipe Contreras <felipe.contreras@...il.com> Cc: linux-kernel@...r.kernel.org, linux-btrfs@...r.kernel.org Subject: Re: btrfs: 21 minutes to read 1.2M file directory On Tue, Dec 21, 2010 at 03:07:33AM +0200, Felipe Contreras wrote: > On Tue, Dec 21, 2010 at 12:24 AM, Andy Isaacson <adi@...apodia.org> wrote: > > I have a directory with 1.2M files in it, which makes readdir very slow > > on btrfs with cold caches (although it's reasonably fast with hot caches > > as in the first example below): > > Sounds like: > > Bug 21562 - btrfs is dead slow due to fragmentation > https://bugzilla.kernel.org/show_bug.cgi?id=21562 Hmmm, how do I look at the btree layout for a given inode? btrfs-image for this filesystem is 1.7GiB .bz2, so I'm afraid it's not reasonable to publish it. -andy -- 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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