From: Davide Libenzi <davidel@xmailserver.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Jeff Garzik <jeff@garzik.org>,
Git Mailing List <git@vger.kernel.org>,
mpm@selenic.com, bcrl@kvack.org
Subject: Re: cleaner/better zlib sources?
Date: Fri, 16 Mar 2007 09:24:38 -0700 (PDT) [thread overview]
Message-ID: <Pine.LNX.4.64.0703160920030.13402@alien.or.mcafeemobile.com> (raw)
In-Reply-To: <Pine.LNX.4.64.0703160913361.3816@woody.linux-foundation.org>
On Fri, 16 Mar 2007, Linus Torvalds wrote:
> On Thu, 15 Mar 2007, Davide Libenzi wrote:
> >
> > Hacked up test case below ...
>
> This one seems to do benchmarking with 8MB buffers if I read it right
> (didn't try).
Yes, I just wanted to have the biggest time spent in inflate(). That why I
use a big buffer.
> The normal size for the performance-critical git objects are in the couple
> of *hundred* bytes. Not kilobytes, and not megabytes.
>
> The most performance-critical objects for uncompression are commits and
> trees. At least for the kernel, the average size of a tree object is 678
> bytes. And that's ignoring the fact that most of them are then deltified,
> so about 80% of them are likely just a ~60-byte delta.
Definitely. The nature of the data matters.
Did you try to make a zlib with my patch and oprofile git on real data
with that?
- Davide
next prev parent reply other threads:[~2007-03-16 16:28 UTC|newest]
Thread overview: 85+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-16 1:04 cleaner/better zlib sources? Linus Torvalds
2007-03-16 1:10 ` Shawn O. Pearce
2007-03-16 1:11 ` Jeff Garzik
2007-03-16 1:14 ` Matt Mackall
2007-03-16 1:46 ` Linus Torvalds
2007-03-16 1:54 ` Linus Torvalds
2007-03-16 2:43 ` Davide Libenzi
2007-03-16 2:56 ` Linus Torvalds
2007-03-16 3:16 ` Davide Libenzi
2007-03-16 16:21 ` Linus Torvalds
2007-03-16 16:24 ` Davide Libenzi [this message]
2007-03-16 16:35 ` Linus Torvalds
2007-03-16 19:21 ` Davide Libenzi
2007-03-17 0:01 ` Linus Torvalds
2007-03-17 1:11 ` Linus Torvalds
2007-03-17 3:28 ` Nicolas Pitre
2007-03-17 5:19 ` Shawn O. Pearce
2007-03-17 17:55 ` Linus Torvalds
2007-03-17 19:40 ` Linus Torvalds
2007-03-17 19:42 ` [PATCH 1/2] Make trivial wrapper functions around delta base generation and freeing Linus Torvalds
2007-03-17 19:44 ` [PATCH 2/2] Implement a simple delta_base cache Linus Torvalds
2007-03-17 21:45 ` Linus Torvalds
2007-03-17 22:37 ` Junio C Hamano
2007-03-17 23:09 ` Linus Torvalds
2007-03-17 23:54 ` Linus Torvalds
2007-03-18 1:13 ` Nicolas Pitre
2007-03-18 7:47 ` Junio C Hamano
2007-03-17 23:12 ` Junio C Hamano
2007-03-17 23:24 ` Linus Torvalds
2007-03-17 23:52 ` Jon Smirl
2007-03-18 1:14 ` Morten Welinder
2007-03-18 1:29 ` Linus Torvalds
2007-03-18 1:38 ` Nicolas Pitre
2007-03-18 1:55 ` Linus Torvalds
2007-03-18 2:03 ` Nicolas Pitre
2007-03-18 2:20 ` Linus Torvalds
2007-03-18 3:00 ` Nicolas Pitre
2007-03-18 3:31 ` Linus Torvalds
2007-03-18 5:30 ` Julian Phillips
2007-03-18 17:23 ` Linus Torvalds
2007-03-18 10:53 ` Robin Rosenberg
2007-03-18 17:34 ` Linus Torvalds
2007-03-18 18:29 ` Robin Rosenberg
2007-03-18 21:25 ` Shawn O. Pearce
2007-03-19 13:16 ` David Brodsky
2007-03-20 6:35 ` Robin Rosenberg
2007-03-20 9:13 ` David Brodsky
2007-03-21 2:37 ` Linus Torvalds
2007-03-21 2:54 ` Nicolas Pitre
2007-03-18 3:06 ` [PATCH 3/2] Avoid unnecessary strlen() calls Linus Torvalds
2007-03-18 9:45 ` Junio C Hamano
2007-03-18 15:54 ` Linus Torvalds
2007-03-18 15:57 ` Linus Torvalds
2007-03-18 21:38 ` Shawn O. Pearce
2007-03-18 21:48 ` Linus Torvalds
2007-03-20 3:05 ` Johannes Schindelin
2007-03-20 3:29 ` Shawn O. Pearce
2007-03-20 3:40 ` Shawn O. Pearce
2007-03-20 4:11 ` Linus Torvalds
2007-03-20 4:18 ` Shawn O. Pearce
2007-03-20 4:45 ` Linus Torvalds
2007-03-20 5:44 ` Junio C Hamano
2007-03-20 3:16 ` Junio C Hamano
2007-03-20 4:31 ` Linus Torvalds
2007-03-20 4:39 ` Shawn O. Pearce
2007-03-20 4:57 ` Linus Torvalds
2007-03-18 1:44 ` [PATCH 2/2] Implement a simple delta_base cache Linus Torvalds
2007-03-18 6:28 ` Avi Kivity
2007-03-17 22:44 ` Linus Torvalds
2007-03-16 16:35 ` cleaner/better zlib sources? Jeff Garzik
2007-03-16 16:42 ` Matt Mackall
2007-03-16 16:51 ` Linus Torvalds
2007-03-16 17:12 ` Nicolas Pitre
2007-03-16 23:22 ` Shawn O. Pearce
2007-03-16 17:06 ` Nicolas Pitre
2007-03-16 17:51 ` Linus Torvalds
2007-03-16 18:09 ` Nicolas Pitre
2007-03-16 1:33 ` Davide Libenzi
2007-03-16 2:06 ` Davide Libenzi
-- strict thread matches above, loose matches on Subject: below --
2007-03-16 6:08 linux
2007-03-16 11:34 ` Florian Weimer
2007-03-16 15:51 ` Josef Weidendorfer
2007-03-16 16:11 ` Linus Torvalds
2007-03-16 17:39 ` linux
2007-03-16 22:45 ` Josef Weidendorfer
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