From: Morten Welinder <mwelinder@gmail•com>
To: Martin Uecker <muecker@gmx•de>, Git Mailing List <git@vger•kernel.org>
Subject: Re: WARNING! Object DB conversion (was Re: [PATCH] write-tree performance problems)
Date: Wed, 20 Apr 2005 09:35:53 -0400 [thread overview]
Message-ID: <118833cc0504200635408b5dd@mail.gmail.com> (raw)
In-Reply-To: <20050420132446.GA10126@macavity>
On 4/20/05, Martin Uecker <muecker@gmx•de> wrote:
> The storage method of the database of a collection of
> files in the underlying file system. Because of the
> random nature of the hashes this leads to a horrible
> amount of seeking for all operations which walk the
> logical structure of some tree stored in the database.
>
> Why not store all objects linearized in one or more
> flat file?
I've been thinking along the same lines and it doesn't look too hard
to factor out the
"back end", i.e., provide methods to
read/write/stat/remove/mmap/whatever objects.
(Note the mmap there. Apart from that, the backend could be an http connection
or worse.)
It will, however, seriously break rsync as transport for people who
commit to their trees.
Thus you need an alternative in place before you can present it as an
alternative.
Morten
next prev parent reply other threads:[~2005-04-20 13:31 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-19 16:50 [PATCH] write-tree performance problems Chris Mason
2005-04-19 17:36 ` Linus Torvalds
2005-04-19 18:11 ` Chris Mason
2005-04-19 19:03 ` Linus Torvalds
2005-04-19 21:08 ` Chris Mason
2005-04-19 21:23 ` Linus Torvalds
2005-04-20 0:49 ` Chris Mason
2005-04-20 1:09 ` Linus Torvalds
2005-04-20 6:43 ` Linus Torvalds
2005-04-20 7:38 ` H. Peter Anvin
2005-04-20 9:08 ` WARNING! Object DB conversion (was Re: [PATCH] write-tree performance problems) Linus Torvalds
2005-04-20 10:04 ` Ingo Molnar
2005-04-20 12:11 ` Jon Seymour
2005-04-20 13:24 ` Martin Uecker
2005-04-20 13:35 ` Morten Welinder [this message]
2005-04-20 13:41 ` Jon Seymour
2005-04-20 14:30 ` C. Scott Ananian
2005-04-20 15:19 ` Martin Uecker
2005-04-20 15:28 ` C. Scott Ananian
2005-04-20 15:57 ` Martin Uecker
2005-04-20 16:33 ` Martin Uecker
2005-04-20 13:30 ` Blob chunking code. [First look.] C. Scott Ananian
2005-04-20 17:31 ` Blob chunking code. [Second look] C. Scott Ananian
2005-04-20 14:13 ` WARNING! Object DB conversion (was Re: [PATCH] write-tree performance problems) David Woodhouse
2005-04-20 14:59 ` Linus Torvalds
2005-04-20 22:29 ` David Woodhouse
[not found] ` <2cfc4032050420050655265d3a@mail.gmail.com>
2005-04-20 14:29 ` Linus Torvalds
2005-04-20 14:35 ` C. Scott Ananian
2005-04-20 15:22 ` [PATCH] write-tree performance problems Chris Mason
2005-04-20 15:30 ` C. Scott Ananian
2005-04-20 15:46 ` Linus Torvalds
2005-04-20 15:52 ` C. Scott Ananian
2005-04-20 16:21 ` Linus Torvalds
2005-04-20 15:40 ` Linus Torvalds
2005-04-20 16:10 ` David Willmore
2005-04-20 16:33 ` Linus Torvalds
2005-04-20 16:41 ` Linus Torvalds
2005-04-20 16:37 ` Chris Mason
2005-04-20 17:06 ` Linus Torvalds
2005-04-20 17:23 ` Chris Mason
2005-04-20 17:52 ` Linus Torvalds
2005-04-20 19:04 ` Chris Mason
2005-04-20 19:19 ` Linus Torvalds
2005-04-20 19:47 ` Linus Torvalds
2005-04-20 18:07 ` David S. Miller
2005-04-19 22:09 ` David Lang
2005-04-19 22:21 ` Linus Torvalds
2005-04-19 23:00 ` David Lang
2005-04-19 23:09 ` Linus Torvalds
2005-04-19 23:42 ` David Lang
2005-04-19 23:59 ` Linus Torvalds
2005-04-19 21:52 ` Christopher Li
2005-04-19 18:51 ` Olivier Galibert
2005-04-19 22:47 ` C. Scott Ananian
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