From: "Jörn Engel" <joern@logfs.org>
To: Johannes Berg <johannes@sipsolutions.net>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [RFC] B+Tree library V2
Date: Wed, 5 Nov 2008 21:21:58 +0100 [thread overview]
Message-ID: <20081105202158.GF6561@logfs.org> (raw)
In-Reply-To: <1225915954.3619.166.camel@johannes.berg>
On Wed, 5 November 2008 21:12:34 +0100, Johannes Berg wrote:
> On Wed, 2008-11-05 at 21:06 +0100, Jörn Engel wrote:
> > On Wed, 5 November 2008 20:57:20 +0100, Johannes Berg wrote:
> > >
> > > That sounds fair, after all at least it limits the tree size, but I'm
> > > too lazy to calculate the worst case right now.
> >
> > Worst case you have a single entry next to a full node, then split the
> > full node, etc. So slightly more than 1/4 populated.
>
> That would be roughly 1/3, no? But it doesn't really matter much.
When entries/node approaches infinity it is 1/4. With 4 entries/node,
which is the smallest useful number, it is 3/8.
> How we going to synchronise this? I'm not in a hurry with this scanning
> code and I need to work on it still anyway.
I could create a git tree and ask for inclusion in -next. Or you could
combine it with your code. I slightly favor the latter, as a library
without any users is somewhat... useless.
Jörn
--
When in doubt, use brute force.
-- Ken Thompson
next prev parent reply other threads:[~2008-11-05 20:22 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-26 12:46 [RFC] B+Tree library Jörn Engel
2008-10-28 1:25 ` Dave Chinner
2008-10-30 17:43 ` Pavel Machek
2008-10-30 17:58 ` Jörn Engel
2008-10-30 19:14 ` Pavel Machek
2008-10-30 20:20 ` Jörn Engel
2008-10-31 6:38 ` Christian Borntraeger
2008-10-31 7:35 ` Jörn Engel
2008-10-31 9:16 ` Geert Uytterhoeven
2008-10-31 9:20 ` Jörn Engel
2008-10-31 10:35 ` Johannes Berg
2008-10-31 11:26 ` Jörn Engel
2008-10-31 11:32 ` Johannes Berg
2008-10-31 12:54 ` Jörn Engel
2008-10-31 13:07 ` Johannes Berg
2008-10-31 13:15 ` Jörn Engel
2008-11-01 15:59 ` [RFC] B+Tree library V2 Jörn Engel
2008-11-05 19:57 ` Johannes Berg
2008-11-05 20:06 ` Jörn Engel
2008-11-05 20:12 ` Johannes Berg
2008-11-05 20:21 ` Jörn Engel [this message]
2008-11-05 20:25 ` Johannes Berg
2008-11-07 7:52 ` Jörn Engel
2009-01-08 0:57 ` Johannes Berg
2009-01-08 16:24 ` Jörn Engel
2009-01-08 16:34 ` Johannes Berg
2009-01-08 19:40 ` Jörn Engel
2009-01-08 16:50 ` Johannes Berg
2009-01-08 19:46 ` Jörn Engel
2009-01-08 17:10 ` Johannes Berg
2009-01-08 20:02 ` Jörn Engel
2009-01-08 20:18 ` Johannes Berg
2009-01-08 21:09 ` Jörn Engel
2008-10-31 13:16 ` [RFC] B+Tree library Johannes Berg
2008-10-31 13:29 ` Jörn Engel
2008-10-31 13:45 ` Bert Wesarg
2008-10-31 15:18 ` Tim Gardner
2008-10-31 15:35 ` Jörn Engel
2008-10-31 20:17 ` Sean Young
2008-10-31 23:36 ` Jörn Engel
2008-11-01 10:17 ` Sean Young
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20081105202158.GF6561@logfs.org \
--to=joern@logfs.org \
--cc=johannes@sipsolutions.net \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.