From: Junio C Hamano <junkio@cox.net>
To: David Lang <david.lang@digitalinsight.com>
Cc: Chris Wedgwood <cw@f00f.org>, Linus Torvalds <torvalds@osdl.org>,
Git Mailing List <git@vger.kernel.org>
Subject: Re: I want to release a "git-1.0"
Date: Wed, 01 Jun 2005 16:03:58 -0700 [thread overview]
Message-ID: <7vfyw1isrl.fsf@assigned-by-dhcp.cox.net> (raw)
In-Reply-To: <Pine.LNX.4.62.0506011304001.21267@qynat.qvtvafvgr.pbz> (David Lang's message of "Wed, 1 Jun 2005 13:06:31 -0700 (PDT)")
>>>>> "DL" == David Lang <david.lang@digitalinsight.com> writes:
>> Internally, git-diff-cache -B -C is used which does use the
>> deltify to locate complete rewrites, renames and copies (that's
>> why the script is so slow). For passing on and assigning blames
>> line by line, parsing "diff --unified=0" output was a lot easier
>> for this script and that was what I did in this quick-and-dirty
>> version.
DL> I was under the impressin that the deltafy stuff was significantly
DL> faster then you are suggeting that it is here
I perhaps phrased it poorly.
The slow part is not a single delta operation, but having to run
many delta operations between all combinations of rename/copy
candidates, which is O(n * m) where n is the number of newly
created files (counting "broken" ones created by -B flag) and m
is the number of (deleted, modified and unmodified) files in the
original tree.
next prev parent reply other threads:[~2005-06-01 23:01 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-30 20:00 I want to release a "git-1.0" Linus Torvalds
2005-05-30 20:33 ` jeff millar
2005-05-30 20:49 ` Nicolas Pitre
2005-06-01 6:52 ` Junio C Hamano
2005-06-01 8:24 ` [PATCH] Add -d flag to git-pull-* family Junio C Hamano
2005-06-01 14:39 ` Nicolas Pitre
2005-06-01 16:00 ` Junio C Hamano
[not found] ` <7v1x7lk8fl.fsf_-_@assigned-by-dhcp.cox.net>
2005-06-02 0:47 ` [PATCH] Handle deltified object correctly in git-*-pull family Nicolas Pitre
[not found] ` <7vpsv5hbm5.fsf@assigned-by-dhcp.cox.net>
2005-06-02 0:51 ` [PATCH] Stop inflating the whole SHA1 file only to check size Nicolas Pitre
2005-06-02 1:32 ` Junio C Hamano
2005-06-02 0:58 ` [PATCH] Handle deltified object correctly in git-*-pull family Linus Torvalds
2005-06-02 1:43 ` Junio C Hamano
2005-05-30 20:59 ` I want to release a "git-1.0" Junio C Hamano
2005-05-30 21:07 ` Junio C Hamano
2005-05-30 22:11 ` David Greaves
2005-05-30 22:12 ` Dave Jones
2005-05-30 22:55 ` Dmitry Torokhov
2005-05-30 23:15 ` Junio C Hamano
2005-05-30 23:23 ` Dmitry Torokhov
2005-05-31 0:52 ` Linus Torvalds
2005-05-30 22:19 ` Ryan Anderson
2005-05-31 0:58 ` Linus Torvalds
2005-05-30 22:32 ` Chris Wedgwood
2005-05-30 23:56 ` Chris Wedgwood
2005-05-31 1:06 ` Linus Torvalds
2005-06-01 2:11 ` Junio C Hamano
2005-06-01 2:25 ` David Lang
2005-06-01 4:53 ` Junio C Hamano
2005-06-01 20:06 ` David Lang
2005-06-01 20:16 ` C. Scott Ananian
2005-06-02 0:43 ` Nicolas Pitre
2005-06-02 1:14 ` Brian O'Mahoney
2005-06-01 23:03 ` Junio C Hamano [this message]
2005-05-31 0:19 ` Petr Baudis
2005-05-31 13:45 ` Eric W. Biederman
2005-06-01 3:04 ` Linus Torvalds
2005-06-01 4:06 ` Junio C Hamano
2005-06-02 23:54 ` [PATCH] Fix -B "very-different" logic Junio C Hamano
2005-06-03 0:21 ` Linus Torvalds
2005-06-03 1:33 ` Junio C Hamano
2005-06-03 8:32 ` [PATCH 0/4] " Junio C Hamano
2005-06-03 8:36 ` [PATCH 1/4] Tweak count-delta interface Junio C Hamano
2005-06-03 8:36 ` [PATCH 2/4] diff: Fix docs and add -O to diff-helper Junio C Hamano
2005-06-03 8:37 ` [PATCH 3/4] diff: Clean up diff_scoreopt_parse() Junio C Hamano
2005-06-03 8:40 ` [PATCH 4/4] diff: Update -B heuristics Junio C Hamano
2005-06-01 6:28 ` I want to release a "git-1.0" Junio C Hamano
2005-06-01 22:00 ` Daniel Barkalow
2005-06-01 23:05 ` Junio C Hamano
2005-06-03 9:47 ` Petr Baudis
2005-06-03 15:09 ` Daniel Barkalow
2005-06-02 7:15 ` Eric W. Biederman
2005-06-02 8:32 ` Kay Sievers
2005-06-02 14:52 ` Linus Torvalds
2005-06-02 12:02 ` [PATCH] several typos in tutorial Alexey Nezhdanov
2005-06-02 12:41 ` Vincent Hanquez
2005-06-02 12:45 ` Alexey Nezhdanov
2005-06-02 12:51 ` Vincent Hanquez
2005-06-02 12:56 ` Alexey Nezhdanov
2005-06-02 13:00 ` Alexey Nezhdanov
2005-06-02 23:40 ` I want to release a "git-1.0" Adam Kropelin
2005-06-03 0:06 ` Linus Torvalds
2005-06-03 0:47 ` Linus Torvalds
2005-06-03 1:34 ` Adam Kropelin
2005-06-02 19:43 ` CVS migration section to the tutorial Junio C Hamano
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