From: Emmanuel Florac <eflorac@intellique.com>
To: Dave Chinner <david@fromorbit.com>
Cc: xfs@oss.sgi.com
Subject: Re: LWN.net article: creating 1 billion files -> XFS looses
Date: Tue, 7 Sep 2010 08:46:43 +0200 [thread overview]
Message-ID: <20100907084643.1f6cfa93@galadriel.home> (raw)
In-Reply-To: <20100906220410.GD7362@dastard>
Le Tue, 7 Sep 2010 08:04:10 +1000 vous écriviez:
> Oh, that's larger than I've ever run before ;)
Excellent :) Still works fine afterwards; mount, umount, etc works
flawlessly. Memory consumption though is huge :)
>
> Try using:
>
> # mkfs.xfs -d size=64k
>
> Will speed up large directory operations by at least an order of
> magnitude.
OK, we'll try that too :)
> > Now we're starting afresh with 1000 directories with 1 million files
> > each :)
>
> Which is exactly the test that was used to generate the numbers that
> were published.
>
> > (Kernel version used : vanilla 2.6.32.11 x86_64 smp)
>
> Not much point in testing that kernel - delayed logging is where the
> future is for this sort of workload, which is what I'm testing.
I'll compile a 2.6.36rc for comparison.
--
------------------------------------------------------------------------
Emmanuel Florac | Direction technique
| Intellique
| <eflorac@intellique.com>
| +33 1 78 94 84 02
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next prev parent reply other threads:[~2010-09-07 6:51 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-19 11:12 LWN.net article: creating 1 billion files -> XFS looses Michael Monnerie
2010-08-19 12:05 ` Christoph Hellwig
2010-08-19 12:45 ` Michael Monnerie
2010-08-19 13:55 ` Stan Hoeppner
2010-08-20 7:55 ` Dave Chinner
2010-08-19 13:10 ` Emmanuel Florac
2010-09-06 13:42 ` Emmanuel Florac
2010-09-06 22:04 ` Dave Chinner
2010-09-06 22:58 ` Michael Monnerie
2010-09-07 3:31 ` Dave Chinner
2010-09-07 6:20 ` Michael Monnerie
2010-09-07 7:01 ` Dave Chinner
2010-09-08 5:42 ` Michael Monnerie
2010-09-07 6:46 ` Emmanuel Florac [this message]
2010-09-16 10:13 ` LWN.net article: creating 1 billion files -> Tests we did Emmanuel Florac
2010-09-16 21:53 ` Stan Hoeppner
2010-09-17 7:54 ` Michael Monnerie
2010-09-17 19:29 ` Peter Grandi
2010-09-18 11:25 ` Emmanuel Florac
2010-09-18 11:16 ` Emmanuel Florac
2010-09-17 19:57 ` Peter Grandi
2010-09-18 11:39 ` Emmanuel Florac
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