From: Sam Vilain <sam@vilain.net>
To: Jeff King <peff@peff.net>
Cc: David Symonds <dsymonds@gmail.com>,
"Shawn O. Pearce" <spearce@spearce.org>,
git@vger.kernel.org, Nicolas Pitre <nico@cam.org>
Subject: Re: [PATCH] Change 'Deltifying objects' to 'Delta compressing objects'
Date: Fri, 19 Oct 2007 15:55:30 +1300 [thread overview]
Message-ID: <47181CA2.5010605@vilain.net> (raw)
In-Reply-To: <20071019023645.GC8298@coredump.intra.peff.net>
Jeff King wrote:
> On Fri, Oct 19, 2007 at 12:24:44PM +1000, David Symonds wrote:
>
>> Forward thinking, that's probably most sensible, since git 4.7 might
>> not use delta compression, but maybe wavelet compression, or other
>> scheme entirely. Using deltas is an implementation detail, after all.
>
> Git already uses two types of compression (zlib on all objects, deltas
> between objects in packfiles). So just saying "compressing" is actually
> a bit ambiguous, and I think noting that what we are _actually_ doing
> right now is delta compression is worthwhile.
True. But then, zlib compression is also delta compressing and huffman
coding. Git's delta compression is quite similar; it just uses a larger
window than the sliding 64k gzip one.
Sam.`
next prev parent reply other threads:[~2007-10-19 2:55 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-19 0:45 [PATCH] Change 'Deltifying objects' to 'Delta compressing objects' Shawn O. Pearce
2007-10-19 2:12 ` Jeff King
2007-10-19 2:19 ` Sam Vilain
2007-10-19 2:24 ` David Symonds
2007-10-19 2:34 ` Shawn O. Pearce
2007-10-19 3:02 ` Nicolas Pitre
2007-10-19 2:36 ` Jeff King
2007-10-19 2:55 ` Sam Vilain [this message]
2007-10-19 2:25 ` Jeff King
2007-10-19 2:21 ` Shawn O. Pearce
2007-10-19 2:34 ` Jeff King
2007-10-19 2:47 ` Shawn O. Pearce
2007-10-19 3:01 ` Nicolas Pitre
2007-10-19 3:07 ` Jeff King
2007-10-19 3:24 ` Nicolas Pitre
2007-10-19 3:32 ` Jeff King
2007-10-19 3:50 ` Nicolas Pitre
2007-10-19 3:56 ` Jeff King
2007-10-19 4:21 ` Linus Torvalds
2007-10-19 4:29 ` Jeff King
2007-10-19 11:58 ` Nicolas Pitre
2007-10-19 19:00 ` Linus Torvalds
2007-10-19 21:57 ` Linus Torvalds
2007-10-19 5:09 ` Shawn O. Pearce
2007-10-19 3:33 ` Shawn O. Pearce
2007-10-19 5:03 ` [PATCH] Stop displaying "Pack pack-$ID created." during git-gc Shawn O. Pearce
2007-10-19 2:49 ` [PATCH] Change 'Deltifying objects' to 'Delta compressing objects' Nicolas Pitre
2007-10-19 3:17 ` Shawn O. Pearce
2007-10-19 3:38 ` Nicolas Pitre
2007-10-19 3:41 ` Jeff King
2007-10-19 3:45 ` Shawn O. Pearce
2007-10-19 4:02 ` Nicolas Pitre
2007-10-19 11:44 ` Wincent Colaiuta
2007-10-19 2:45 ` Nicolas Pitre
2007-10-19 2:59 ` Jeff King
2007-10-19 3:11 ` Nicolas Pitre
2007-10-19 3:15 ` Jeff King
2007-10-19 3:27 ` Nicolas Pitre
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