linux-ext4 - Time for "mkdir" on ext3.

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Message-ID: <20110310071119.GF31710@bitwizard.nl>
Date:	Thu, 10 Mar 2011 08:11:19 +0100
From:	Rogier Wolff <R.E.Wolff@...Wizard.nl>
To:	linux-ext4@...r.kernel.org
Subject: Time for "mkdir" on ext3. 

Hi,

I have an ext3 filesystem. When I "cp -lr" a big tree there, it turns
out that the "mkdir" calls take the bulk of the time. IIRC there are
325000 directories (and 4 million files). Each mkdir call takes about
50ms (*), so that accounts for about 4.5 hours of the running time.

Would ext4 perform significantly better?

	Roger.

(*) I forgot about this Email while it was still in my editor. Now a
day layter the mkdir calls all take around 17ms, and things run about
3x faster. On the other hand it's been running for over 5 hours. And
yesterday I've seen a streak of >100ms mkdir calls... So apparently
it depends on "something".... 

-- 
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