From: Matthias-Christian Ott <matthias.christian@tiscali.de>
To: Linus Torvalds <torvalds@osdl.org>
Cc: Andrea Arcangeli <andrea@suse.de>, Chris Wedgwood <cw@f00f.org>,
Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Kernel SCM saga..
Date: Fri, 08 Apr 2005 19:25:17 +0200 [thread overview]
Message-ID: <4256BE7D.5040308@tiscali.de> (raw)
In-Reply-To: <Pine.LNX.4.58.0504081010540.28951@ppc970.osdl.org>
Linus Torvalds wrote:
>On Fri, 8 Apr 2005, Matthias-Christian Ott wrote:
>
>
>>SQL Databases like SQLite aren't slow.
>>
>>
>
>After applying a patch, I can do a complete "show-diff" on the kernel tree
>to see the effect of it in about 0.15 seconds.
>
>Also, I can use rsync to efficiently replicate my database without having
>to re-send the whole crap - it only needs to send the new stuff.
>
>You do that with an sql database, and I'll be impressed.
>
> Linus
>
>
>
Ok, but if you want to search for information in such big text files it
slow, because you do linear search -- most datases use faster search
algorithms like hashing and if you have multiple files (I don't if
you're system uses multiple files (like bitkeeper) or not) which need a
system call to be opened this will be very slow, because system calls
itself are slow. And using rsync is also possible because most databases
store their information as plain text with meta information.
Mattthias-Christian Ott
next prev parent reply other threads:[~2005-04-08 17:28 UTC|newest]
Thread overview: 201+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-06 15:42 Kernel SCM saga Linus Torvalds
2005-04-06 16:00 ` Greg KH
2005-04-07 16:40 ` Rik van Riel
2005-04-08 0:53 ` Jesse Barnes
2005-04-06 16:09 ` Daniel Phillips
2005-04-06 19:07 ` Jon Smirl
2005-04-06 19:24 ` Matan Peled
2005-04-06 19:49 ` Jon Smirl
2005-04-06 20:34 ` Hua Zhong
2005-04-07 1:31 ` Christoph Lameter
2005-04-06 19:39 ` Paul P Komkoff Jr
2005-04-07 1:40 ` Martin Pool
2005-04-07 1:47 ` Jeff Garzik
2005-04-07 2:26 ` Martin Pool
2005-04-07 2:32 ` David Lang
2005-04-07 5:38 ` Martin Pool
2005-04-07 23:27 ` Linus Torvalds
2005-04-08 5:56 ` Martin Pool
2005-04-08 6:41 ` Linus Torvalds
2005-04-08 8:38 ` Andrea Arcangeli
2005-04-08 23:38 ` Daniel Phillips
2005-04-09 2:54 ` Andrea Arcangeli
2005-04-09 0:12 ` Linus Torvalds
2005-04-09 2:27 ` Andrea Arcangeli
2005-04-09 2:32 ` David Lang
2005-04-09 3:08 ` Brian Gerst
2005-04-09 3:15 ` Andrea Arcangeli
2005-04-09 5:45 ` Linus Torvalds
2005-04-09 22:55 ` David S. Miller
2005-04-09 23:13 ` Linus Torvalds
2005-04-10 0:14 ` Chris Wedgwood
2005-04-10 1:56 ` Paul Jackson
2005-04-10 12:03 ` Ingo Molnar
2005-04-10 17:38 ` Paul Jackson
2005-04-10 17:46 ` Ingo Molnar
2005-04-10 17:56 ` Paul Jackson
2005-04-10 0:22 ` Paul Jackson
2005-04-10 11:33 ` Ingo Molnar
2005-04-10 17:55 ` Matthias Andree
2005-04-09 16:33 ` Roman Zippel
2005-04-09 23:31 ` Tupshin Harper
2005-04-10 17:24 ` Code snippet to reconstruct ancestry graph from bk repo Paul P Komkoff Jr
2005-04-10 18:19 ` Roman Zippel
2005-04-08 16:46 ` Kernel SCM saga Catalin Marinas
2005-04-07 8:14 ` Magnus Damm
2005-04-07 7:53 ` Zwane Mwaikambo
2005-04-07 3:35 ` Daniel Phillips
2005-04-07 15:08 ` Daniel Phillips
2005-04-07 6:36 ` bert hubert
2005-04-06 23:22 ` Jon Masters
2005-04-07 6:51 ` Paul Mackerras
2005-04-07 7:48 ` Arjan van de Ven
2005-04-07 15:10 ` Linus Torvalds
2005-04-07 17:00 ` Daniel Phillips
2005-04-07 17:38 ` Linus Torvalds
2005-04-07 17:47 ` Chris Wedgwood
2005-04-07 18:06 ` Magnus Damm
2005-04-07 18:36 ` Daniel Phillips
2005-04-08 3:35 ` Jeff Garzik
2005-04-07 19:56 ` Sam Ravnborg
2005-04-07 23:21 ` Dave Airlie
2005-04-07 7:18 ` David Woodhouse
2005-04-07 8:50 ` Andrew Morton
2005-04-07 9:20 ` Paul Mackerras
2005-04-07 9:46 ` Andrew Morton
2005-04-07 11:17 ` Paul Mackerras
2005-04-07 10:41 ` Geert Uytterhoeven
2005-04-07 9:25 ` David Woodhouse
2005-04-07 9:49 ` Andrew Morton
2005-04-07 9:55 ` Russell King
2005-04-07 10:11 ` David Woodhouse
2005-04-07 9:40 ` David Vrabel
2005-04-07 9:24 ` Sergei Organov
2005-04-07 10:30 ` Matthias Andree
2005-04-07 10:54 ` Andrew Walrond
2005-04-09 16:17 ` David Roundy
2005-04-10 9:24 ` Giuseppe Bilotta
2005-04-10 13:51 ` David Roundy
2005-04-07 15:32 ` Linus Torvalds
2005-04-07 17:09 ` Daniel Phillips
2005-04-07 17:10 ` Al Viro
2005-04-07 17:47 ` Linus Torvalds
2005-04-07 18:04 ` Jörn Engel
2005-04-07 18:27 ` Daniel Phillips
2005-04-07 20:54 ` Arjan van de Ven
2005-04-08 3:41 ` Jeff Garzik
2005-04-07 17:52 ` Bartlomiej Zolnierkiewicz
2005-04-07 17:54 ` Daniel Phillips
2005-04-07 18:13 ` Dmitry Yusupov
2005-04-07 18:29 ` Daniel Phillips
2005-04-10 22:33 ` Troy Benjegerdes
2005-04-11 0:00 ` Christian Parpart
2005-04-08 17:24 ` Jon Masters
2005-04-08 22:05 ` Daniel Phillips
2005-04-08 22:52 ` Roman Zippel
2005-04-08 23:46 ` Tupshin Harper
2005-04-09 1:00 ` Roman Zippel
2005-04-09 1:23 ` Tupshin Harper
2005-04-09 16:52 ` Eric D. Mudama
2005-04-09 17:40 ` Roman Zippel
2005-04-09 18:56 ` Ray Lee
2005-04-07 7:44 ` Jan Hudec
2005-04-08 6:14 ` Matthias Urlichs
2005-04-09 1:01 ` Marcin Dalecki
2005-04-09 8:32 ` Jan Hudec
2005-04-11 2:26 ` Miles Bader
2005-04-11 2:56 ` Marcin Dalecki
2005-04-11 6:36 ` Jan Hudec
2005-04-07 10:56 ` Andrew Walrond
2005-04-08 0:57 ` Ian Wienand
2005-04-08 4:13 ` Chris Wedgwood
2005-04-08 4:42 ` Linus Torvalds
2005-04-08 5:04 ` Chris Wedgwood
2005-04-08 5:14 ` H. Peter Anvin
2005-04-08 7:05 ` Rogan Dawes
2005-04-08 7:21 ` Daniel Phillips
2005-04-08 7:49 ` H. Peter Anvin
2005-04-08 7:14 ` Andrea Arcangeli
2005-04-08 12:02 ` Matthias Andree
2005-04-08 12:21 ` Florian Weimer
2005-04-08 14:26 ` Linus Torvalds
2005-04-08 16:15 ` Matthias-Christian Ott
2005-04-08 17:14 ` Linus Torvalds
2005-04-08 17:15 ` Chris Wedgwood
2005-04-08 17:46 ` Linus Torvalds
2005-04-08 18:05 ` Chris Wedgwood
2005-04-08 19:03 ` Linus Torvalds
2005-04-08 19:16 ` Chris Wedgwood
2005-04-08 19:38 ` Florian Weimer
2005-04-08 19:48 ` Chris Wedgwood
2005-04-08 19:39 ` Linus Torvalds
2005-04-08 20:11 ` Uncached stat performace [ Was: Re: Kernel SCM saga.. ] Ragnar Kjørstad
2005-04-08 20:14 ` Chris Wedgwood
2005-04-08 20:50 ` Kernel SCM saga Luck, Tony
2005-04-08 21:27 ` Linus Torvalds
2005-04-09 17:14 ` Roman Zippel
2005-04-09 7:20 ` Willy Tarreau
2005-04-09 15:15 ` Paul Jackson
2005-04-08 17:25 ` Matthias-Christian Ott [this message]
2005-04-08 18:14 ` Linus Torvalds
2005-04-08 18:28 ` Jon Smirl
2005-04-08 18:58 ` Florian Weimer
2005-04-09 1:11 ` Marcin Dalecki
2005-04-09 1:50 ` David Lang
2005-04-09 22:12 ` Florian Weimer
2005-04-08 19:16 ` Matthias-Christian Ott
2005-04-08 19:32 ` Linus Torvalds
2005-04-08 19:44 ` Matthias-Christian Ott
2005-04-09 1:09 ` Marcin Dalecki
2005-04-08 17:35 ` Jeff Garzik
2005-04-08 18:47 ` Linus Torvalds
2005-04-08 18:56 ` Chris Wedgwood
2005-04-09 7:37 ` Willy Tarreau
2005-04-09 7:47 ` Neil Brown
2005-04-09 8:00 ` Willy Tarreau
2005-04-09 9:34 ` Neil Brown
2005-04-09 15:40 ` Paul Jackson
2005-04-09 16:16 ` Linus Torvalds
2005-04-09 17:15 ` Paul Jackson
2005-04-09 17:35 ` Paul Jackson
2005-04-09 1:04 ` Marcin Dalecki
2005-04-09 15:42 ` Paul Jackson
2005-04-09 18:45 ` Marcin Dalecki
2005-04-09 1:00 ` Marcin Dalecki
2005-04-09 1:09 ` Chris Wedgwood
2005-04-09 1:21 ` Marcin Dalecki
2005-04-08 7:17 ` ross
2005-04-08 15:50 ` Linus Torvalds
2005-04-09 2:53 ` Petr Baudis
2005-04-09 7:08 ` Randy.Dunlap
2005-04-09 18:06 ` [PATCH] " Petr Baudis
2005-04-10 1:01 ` Phillip Lougher
2005-04-10 1:42 ` Petr Baudis
2005-04-10 1:57 ` Phillip Lougher
2005-04-09 15:50 ` Paul Jackson
2005-04-09 16:26 ` Linus Torvalds
2005-04-09 17:08 ` Paul Jackson
2005-04-10 3:41 ` Paul Jackson
2005-04-10 8:39 ` David Lang
2005-04-10 9:40 ` Junio C Hamano
2005-04-10 16:46 ` Bill Davidsen
2005-04-10 17:50 ` Paul Jackson
2005-04-12 23:20 ` Pavel Machek
2005-04-08 7:34 ` Marcel Lanz
2005-04-08 9:23 ` Geert Uytterhoeven
2005-04-08 8:38 ` Matt Johnston
2005-04-12 7:14 ` Kernel SCM saga.. (bk license?) Kedar Sovani
2005-04-12 9:34 ` Catalin Marinas
2005-04-13 4:04 ` Ricky Beam
2005-04-08 11:42 ` Kernel SCM saga Catalin Marinas
[not found] <Pine.LNX.4.58.0504060800280.2215 () ppc970 ! osdl ! org>
2005-04-06 21:13 ` kfogel
2005-04-06 22:39 ` Jeff Garzik
2005-04-09 1:00 ` Marcin Dalecki
2005-04-08 22:27 Rajesh Venkatasubramanian
2005-04-08 23:29 ` Linus Torvalds
2005-04-09 0:29 ` Linus Torvalds
2005-04-09 16:20 ` Paul Jackson
2005-04-09 4:06 Walter Landry
2005-04-09 11:02 Samium Gromoff
2005-04-09 11:29 Samium Gromoff
2005-04-10 4:20 Albert Cahalan
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