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ee1c6c34ac
Since 33d4221 (write_sha1_file: freshen existing objects, 2014-10-15), we update the mtime of existing objects that we would have written out (had they not existed). For the common case in which many objects are packed, we may update the mtime on a single packfile repeatedly. This can result in a noticeable performance problem if calling utime() is expensive (e.g., because your storage is on NFS). We can fix this by keeping a per-pack flag that lets us freshen only once per program invocation. An alternative would be to keep the packed_git.mtime flag up to date as we freshen, and freshen only once every N seconds. In practice, it's not worth the complexity. We are racing against prune expiration times here, which inherently must be set to accomodate reasonable program running times (because they really care about the time between an object being written and it becoming referenced, and the latter is typically the last step a program takes). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Git - the stupid content tracker
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"git" can mean anything, depending on your mood.
- random three-letter combination that is pronounceable, and not
actually used by any common UNIX command. The fact that it is a
mispronunciation of "get" may or may not be relevant.
- stupid. contemptible and despicable. simple. Take your pick from the
dictionary of slang.
- "global information tracker": you're in a good mood, and it actually
works for you. Angels sing, and a light suddenly fills the room.
- "goddamn idiotic truckload of sh*t": when it breaks
Git is a fast, scalable, distributed revision control system with an
unusually rich command set that provides both high-level operations
and full access to internals.
Git is an Open Source project covered by the GNU General Public
License version 2 (some parts of it are under different licenses,
compatible with the GPLv2). It was originally written by Linus
Torvalds with help of a group of hackers around the net.
Please read the file INSTALL for installation instructions.
See Documentation/gittutorial.txt to get started, then see
Documentation/everyday.txt for a useful minimum set of commands, and
Documentation/git-commandname.txt for documentation of each command.
If git has been correctly installed, then the tutorial can also be
read with "man gittutorial" or "git help tutorial", and the
documentation of each command with "man git-commandname" or "git help
commandname".
CVS users may also want to read Documentation/gitcvs-migration.txt
("man gitcvs-migration" or "git help cvs-migration" if git is
installed).
Many Git online resources are accessible from http://git-scm.com/
including full documentation and Git related tools.
The user discussion and development of Git take place on the Git
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To subscribe to the list, send an email with just "subscribe git" in
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The maintainer frequently sends the "What's cooking" reports that
list the current status of various development topics to the mailing
list. The discussion following them give a good reference for
project status, development direction and remaining tasks.