From: Pavel Machek <pavel@ucw.cz>
To: Theodore Tso <tytso@mit.edu>,
Johannes Stezenbach <js@linuxtv.org>,
Suparna Bhattacharya <suparna@in.ibm.com>,
Andrew Morton <akpm@osdl.org>, Willy Tarreau <w@1wt.eu>,
Linus Torvalds <torvalds@osdl.org>,
"H. Peter Anvin" <hpa@zytor.com>,
git@vger.kernel.org, nigel@nigel.suspend2.net,
"J.H." <warthog9@kernel.org>,
Randy Dunlap <randy.dunlap@oracle.com>,
kernel list <linux-kernel@vger.kernel.org>,
webmaster@kernel.org,
"linux-ext4@vger.kernel.org" <linux-ext4@vger.kernel.org>
Subject: Re: How git affects kernel.org performance
Date: Mon, 8 Jan 2007 14:59:52 +0100 [thread overview]
Message-ID: <20070108135952.GF25857@elf.ucw.cz> (raw)
In-Reply-To: <20070108135622.GD32756@thunk.org>
Hi!
> > Would e2fsck -D help? What kind of optimization
> > does it perform?
>
> It will help a little; e2fsck -D compresses the logical view of the
> directory, but it doesn't optimize the physical layout on disk at all,
> and of course, it won't help with the lack of readahead logic. It's
> possible to improve how e2fsck -D works, at the moment, it's not
> trying to make the directory be contiguous on disk. What it should
> probably do is to pull a list of all of the blocks used by the
> directory, sort them, and then try to see if it can improve on the
> list by allocating some new blocks that would make the directory more
> contiguous on disk. I suspect any improvements that would be seen by
> doing this would be second order effects at most, though.
...sounds like a job for e2defrag, not e2fsck...
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
next prev parent reply other threads:[~2007-01-08 14:01 UTC|newest]
Thread overview: 115+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-12-14 22:37 kernel.org lies about latest -mm kernel Pavel Machek
2006-12-14 23:01 ` Randy Dunlap
2006-12-14 23:38 ` Sergio Monteiro Basto
2006-12-16 17:44 ` [KORG] " Randy Dunlap
2006-12-16 17:57 ` Andrew Morton
2006-12-16 18:02 ` Randy Dunlap
2006-12-16 19:30 ` J.H.
2006-12-16 20:30 ` Russell King
2006-12-26 16:47 ` H. Peter Anvin
2006-12-16 21:21 ` Nigel Cunningham
2006-12-26 16:49 ` H. Peter Anvin
2007-01-07 3:35 ` Nigel Cunningham
2007-01-07 4:10 ` Jeff Garzik
2007-01-07 4:47 ` Nigel Cunningham
2007-01-07 4:22 ` Jeff Garzik
2007-01-07 4:29 ` Linus Torvalds
2007-01-07 20:11 ` Greg KH
2007-01-07 21:30 ` H. Peter Anvin
2007-01-07 21:54 ` Junio C Hamano
2007-01-07 22:21 ` Jeff Garzik
2007-01-07 22:53 ` Linus Torvalds
2007-01-07 23:32 ` Martin Langhoff
2007-01-07 5:17 ` H. Peter Anvin
2007-01-07 5:24 ` How git affects kernel.org performance H. Peter Anvin
2007-01-07 5:39 ` Linus Torvalds
2007-01-07 8:55 ` Willy Tarreau
2007-01-07 8:58 ` H. Peter Anvin
2007-01-07 9:03 ` Willy Tarreau
2007-01-07 10:28 ` Christoph Hellwig
2007-01-07 10:52 ` Willy Tarreau
2007-01-07 18:17 ` Linus Torvalds
2007-01-07 19:13 ` Linus Torvalds
[not found] ` <9e4733910701071126r7931042eldfb73060792f4f41@mail.gmail.com>
2007-01-07 19:35 ` Linus Torvalds
2007-01-07 10:50 ` Jan Engelhardt
2007-01-07 18:49 ` Randy Dunlap
2007-01-07 19:07 ` Jan Engelhardt
2007-01-07 19:28 ` Randy Dunlap
2007-01-07 19:37 ` Linus Torvalds
2007-01-07 9:15 ` Andrew Morton
2007-01-07 9:38 ` Rene Herman
2007-01-08 3:05 ` Suparna Bhattacharya
2007-01-08 12:58 ` Theodore Tso
2007-01-08 13:41 ` Johannes Stezenbach
2007-01-08 13:56 ` Theodore Tso
2007-01-08 13:59 ` Pavel Machek [this message]
2007-01-08 14:17 ` Theodore Tso
2007-01-08 13:43 ` Jeff Garzik
2007-01-09 1:09 ` Paul Jackson
2007-01-09 2:18 ` Jeremy Higdon
2007-01-09 7:59 ` Fengguang Wu
2007-01-09 7:59 ` Fengguang Wu
2007-01-09 16:23 ` Linus Torvalds
2007-01-10 1:57 ` Fengguang Wu
2007-01-10 1:57 ` Fengguang Wu
2007-01-10 3:20 ` Nigel Cunningham
2007-01-10 14:07 ` Fengguang Wu
2007-01-10 14:07 ` Fengguang Wu
2007-01-12 10:54 ` Nigel Cunningham
2007-01-07 14:57 ` Robert Fitzsimons
2007-01-07 19:12 ` J.H.
2007-01-08 1:51 ` Jakub Narebski
2007-01-08 1:51 ` Jakub Narebski
2007-01-07 15:06 ` Krzysztof Halasa
2007-01-07 20:31 ` Shawn O. Pearce
2007-01-08 14:46 ` Nicolas Pitre
2007-01-09 4:29 ` [KORG] Re: kernel.org lies about latest -mm kernel Nigel Cunningham
2007-01-09 5:09 ` Adrian Bunk
2007-01-09 5:51 ` Nigel Cunningham
2006-12-17 12:32 ` Pavel Machek
2006-12-17 13:13 ` Jeff Garzik
2006-12-17 18:23 ` Randy Dunlap
2006-12-17 22:37 ` Matti Aarnio
2006-12-18 0:42 ` J.H.
2006-12-19 6:46 ` Willy Tarreau
2006-12-19 7:39 ` J.H.
2006-12-19 13:32 ` Willy Tarreau
2006-12-19 14:36 ` Dave Jones
2006-12-19 14:38 ` Willy Tarreau
2006-12-26 16:14 ` H. Peter Anvin
2007-01-08 20:10 ` Jean Delvare
2006-12-19 6:34 ` Willy Tarreau
2006-12-19 6:52 ` J.H.
2007-01-06 18:33 ` Randy Dunlap
2007-01-06 19:18 ` H. Peter Anvin
2007-01-06 19:35 ` Willy Tarreau
2007-01-06 19:37 ` Nicholas Miell
2007-01-06 20:13 ` Andrew Morton
2007-01-06 20:18 ` H. Peter Anvin
2007-03-19 19:27 ` [PATCH] sysctl: vfs_cache_divisor Randy Dunlap
2007-03-19 20:36 ` Andrew Morton
2007-03-19 20:42 ` Randy Dunlap
2007-03-20 4:22 ` H. Peter Anvin
2007-03-21 23:01 ` Randy Dunlap
2007-03-21 23:11 ` Andrew Morton
2007-03-23 0:07 ` Kyle Moffett
2007-03-23 20:36 ` Randy Dunlap
2007-03-23 20:59 ` H. Peter Anvin
2007-03-24 0:45 ` Kyle Moffett
2007-03-24 1:17 ` Kyle Moffett
2007-03-20 19:53 ` Ingo Oeser
2007-01-06 23:50 ` [KORG] Re: kernel.org lies about latest -mm kernel H. Peter Anvin
2007-01-06 20:13 ` Jeff Garzik
2007-01-06 20:17 ` Andrew Morton
2007-01-06 20:20 ` H. Peter Anvin
2007-01-06 20:36 ` Andrew Morton
2007-01-06 19:21 ` J.H.
2007-01-07 19:52 ` Randy Dunlap
2007-01-07 23:56 ` H. Peter Anvin
2006-12-26 17:02 ` H. Peter Anvin
2007-01-08 19:31 ` Jean Delvare
2007-01-08 19:37 ` Willy Tarreau
2007-01-08 22:05 ` Jean Delvare
2006-12-19 15:37 ` Tim Schmielau
2007-01-08 21:20 ` Jean Delvare
2007-01-08 21:33 ` J.H.
2007-01-09 7:01 ` Jean Delvare
2007-01-09 7:25 ` J.H.
2007-01-09 13:36 ` Jean Delvare
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