From: William Lee Irwin III <wli@holomorphy.com>
To: Alex Tomas <bzzz@tmi.comex.ru>
Cc: linux-kernel <linux-kernel@vger.kernel.org>,
ext2-devel@lists.sourceforge.net, Andrew Morton <akpm@digeo.com>
Subject: Re: [PATCH] distributed counters for ext2 to avoid group scaning
Date: Mon, 17 Mar 2003 01:37:12 -0800 [thread overview]
Message-ID: <20030317093712.GP20188@holomorphy.com> (raw)
In-Reply-To: <m3el5773to.fsf@lexa.home.net>
On Sun, Mar 16, 2003 at 06:01:55PM +0300, Alex Tomas wrote:
> ext2 with concurrent balloc/ialloc doesn't maintain global free
> inodes/blocks counters. this is due to badness of spinlocks and
> atomic_t from big iron's viewpoint. therefore, to know these values
> we should scan all group descriptors. there are 81 groups for 10G
> fs. I believe there is method to avoid scaning and decrease memory
> footprint.
benching now
-- wli
next prev parent reply other threads:[~2003-03-17 9:26 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-03-16 15:01 [PATCH] distributed counters for ext2 to avoid group scaning Alex Tomas
2003-03-16 17:44 ` [Ext2-devel] " Andreas Dilger
2003-03-16 21:55 ` Alex Tomas
2003-03-17 15:11 ` Matthew Wilcox
2003-03-17 15:09 ` Alex Tomas
2003-03-17 15:27 ` Matthew Wilcox
2003-03-17 15:25 ` Alex Tomas
2003-03-17 20:23 ` Andrew Morton
2003-03-17 20:27 ` Matthew Wilcox
2003-03-17 20:40 ` Alex Tomas
2003-03-17 9:37 ` William Lee Irwin III [this message]
2003-03-17 9:48 ` William Lee Irwin III
2003-03-17 10:41 ` Alex Tomas
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