From: Alexander Larsson <alexl@redhat.com>
To: Carl Henrik Lunde <chlunde@ping.uio.no>
Cc: Soeren Sandmann <sandmann@daimi.au.dk>,
Theodore Tso <tytso@mit.edu>,
linux-kernel@vger.kernel.org
Subject: Re: stat benchmark
Date: Mon, 28 Apr 2008 21:41:36 +0200 [thread overview]
Message-ID: <1209411696.14721.3.camel@localhost.localdomain> (raw)
In-Reply-To: <ed038eb20804271713n79ff9b0cxa6906867d7a20f9@mail.gmail.com>
On Mon, 2008-04-28 at 02:13 +0200, Carl Henrik Lunde wrote:
> On Mon, Apr 28, 2008 at 1:29 AM, Soeren Sandmann <sandmann@daimi.au.dk> wrote:
> [...]
> > For a directory of ~2360 files, chunks of a 1000 files is actually
> > surprisingly worse than statting all of the files at once:
> >
> > Time to stat 1000 files: 1.008735 s
> > Time to stat 1000 files: 0.738936 s
> > Time to stat 366 files: 0.217002 s
> >
> > I guess this just shows that seeks really is pretty much all that
> > matters. Glib should maybe use a larger chunk size.
>
> I agree, if I remember correctly I did not find a directory on my local
> disk where the best result was to sort a chunk instead of the complete
> directory.
I don't think that is expected either. The reason for the chunking is to
avoid unlimited memory use on large directories.
next prev parent reply other threads:[~2008-04-28 19:42 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-24 20:59 stat benchmark Soeren Sandmann
2008-04-24 21:42 ` Carl Henrik Lunde
2008-04-24 21:44 ` Jan Engelhardt
2008-04-25 2:27 ` Justin Banks
2008-04-25 7:01 ` Christoph Hellwig
2008-04-25 19:48 ` Theodore Tso
2008-04-27 23:29 ` Soeren Sandmann
2008-04-28 0:13 ` Carl Henrik Lunde
2008-04-28 19:41 ` Alexander Larsson [this message]
2008-04-28 2:10 ` Theodore Tso
2008-04-27 22:40 ` Carl Henrik Lunde
2008-04-28 17:46 ` Zach Brown
2008-04-28 4:43 ` Ulrich Drepper
2008-04-28 11:53 ` Theodore Tso
2008-04-28 11:59 ` Avi Kivity
2008-04-28 13:31 ` Theodore Tso
2008-04-28 16:18 ` J. Bruce Fields
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