From: "Jon Smirl" <jonsmirl@gmail.com>
To: "Martin Koegler" <mkoegler@auto.tuwien.ac.at>
Cc: "Shawn O. Pearce" <spearce@spearce.org>,
"Nicolas Pitre" <nico@cam.org>,
"Git Mailing List" <git@vger.kernel.org>
Subject: Re: performance on repack
Date: Wed, 15 Aug 2007 14:38:15 -0400 [thread overview]
Message-ID: <9e4733910708151138x2b267dc6w27c1bc8d948e5633@mail.gmail.com> (raw)
In-Reply-To: <20070815171152.GA15155@auto.tuwien.ac.at>
On 8/15/07, Martin Koegler <mkoegler@auto.tuwien.ac.at> wrote:
> git-pack-objects knows the order, in which it will use the objects. A
> seperate thread could pre-read the next object and wait until the main
> thread starts processing it. After the read is complete, another
> thread could start computing the delta index.
The hope is that the new adaptive read ahead code in the kernel will
get this right and you won't need the second thread. Letting the
kernel handle the read ahead will dynamically scale as other demands
are made on the host. There's effectively only one read ahead cache in
the system, only the kernel really knows how to divide it up between
competing apps.
--
Jon Smirl
jonsmirl@gmail.com
next prev parent reply other threads:[~2007-08-15 18:38 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-11 21:12 performance on repack Jon Smirl
2007-08-11 22:09 ` David Kastrup
2007-08-11 22:34 ` Linus Torvalds
2007-08-11 23:21 ` Jon Smirl
2007-08-12 10:33 ` Martin Koegler
2007-08-12 13:49 ` Jon Smirl
2007-08-14 3:12 ` Shawn O. Pearce
2007-08-14 4:10 ` Jon Smirl
2007-08-14 5:13 ` Shawn O. Pearce
2007-08-14 5:57 ` Jon Smirl
2007-08-14 14:52 ` Nicolas Pitre
2007-08-14 21:41 ` Nicolas Pitre
2007-08-15 1:20 ` Jon Smirl
2007-08-15 1:59 ` Nicolas Pitre
2007-08-15 5:32 ` Shawn O. Pearce
2007-08-15 15:08 ` Jon Smirl
2007-08-15 17:11 ` Martin Koegler
2007-08-15 18:38 ` Jon Smirl [this message]
2007-08-15 19:00 ` Nicolas Pitre
2007-08-15 19:42 ` Jon Smirl
2007-08-16 8:10 ` David Kastrup
2007-08-16 15:34 ` Nicolas Pitre
2007-08-16 16:13 ` Jon Smirl
2007-08-16 16:21 ` Nicolas Pitre
2007-08-15 21:05 ` Nicolas Pitre
2007-08-15 20:49 ` Nicolas Pitre
2007-08-30 4:27 ` Nicolas Pitre
2007-08-30 4:36 ` Nicolas Pitre
2007-08-30 16:17 ` Jon Smirl
2007-09-01 21:54 ` Jon Smirl
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
List information: http://vger.kernel.org/majordomo-info.html
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=9e4733910708151138x2b267dc6w27c1bc8d948e5633@mail.gmail.com \
--to=jonsmirl@gmail.com \
--cc=git@vger.kernel.org \
--cc=mkoegler@auto.tuwien.ac.at \
--cc=nico@cam.org \
--cc=spearce@spearce.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.
Code repositories for project(s) associated with this public inbox
https://80x24.org/mirrors/git.git
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).