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Date: Wed, 17 Oct 2001 22:23:37 +0100 (BST)
From: <chris@scary.beasts.org>
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To: Andrea Arcangeli <andrea@suse.de>
cc: Linus Torvalds <torvalds@transmeta.com>,
        Marcelo Tosatti <marcelo@conectiva.com.br>,
        Paul Gortmaker <p_gortmaker@yahoo.com>, <linux-kernel@vger.kernel.org>
Subject: Re: Making diff(1) of linux kernels faster
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On Wed, 17 Oct 2001, Andrea Arcangeli wrote:

> I think with directory readahead Marcelo meant a transparent kernel
> heuristic in the readdir path. ext2_get_page is completly synchronous
> and it's reading one page at time, that's bad but it can be improved
> transparently to userspace, just like we do with the files, and also
> like the old code was doing before the directory in pagecache IIRC.

Do the -ac kernels have the directory in pagecache patch? If not, it could
explain why the -ac kernel performed _much_ better for the
creat()/stat()/unlink() tests in bonnie++.

Cheers
Chris

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