linux-ext4 - Re: fsck performance.

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Message-ID: <20110222133652.GI21917@bitwizard.nl>
Date:	Tue, 22 Feb 2011 14:36:52 +0100
From:	Rogier Wolff <R.E.Wolff@...Wizard.nl>
To:	Rogier Wolff <R.E.Wolff@...Wizard.nl>
Cc:	Andreas Dilger <adilger@...ger.ca>,
	Pawe?? Brodacki <pawel.brodacki@...glemail.com>,
	Amir Goldstein <amir73il@...il.com>, Ted Ts'o <tytso@....edu>,
	linux-ext4@...r.kernel.org
Subject: Re: fsck performance.

On Tue, Feb 22, 2011 at 11:20:56AM +0100, Rogier Wolff wrote:
> I wouldn't be surprised if I'd need more than 3G of RAM. When I
> extrapolated "more than a few days" it was at under 20% of the
> filesystem and had already allocated on the order of 800Gb of
> memory. Now I'm not entirely sure that this is fair: memory use seems
> to go up quickly in the beginning, and then stabilize: as if it has
> decided that 800M of memory use is "acceptable" and somehow uses a
> different strategy once it hits that limit.

OK. Good news. It's finished pass1. It is currently using about 2100Mb
of RAM (ehh. mostly swap, I have only 1G in there). Here is the patch.

	Roger. 

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