git-gc
(1)
名前
git-gc - Cleanup unnecessary files and optimize the local
repository
形式
git gc [--aggressive] [--auto] [--quiet] [--prune=<date> | --no-prune]
説明
Git Manual GIT-GC(1)
NAME
git-gc - Cleanup unnecessary files and optimize the local
repository
SYNOPSIS
git gc [--aggressive] [--auto] [--quiet] [--prune=<date> | --no-prune]
DESCRIPTION
Runs a number of housekeeping tasks within the current
repository, such as compressing file revisions (to reduce
disk space and increase performance) and removing
unreachable objects which may have been created from prior
invocations of git add.
Users are encouraged to run this task on a regular basis
within each repository to maintain good disk space
utilization and good operating performance.
Some git commands may automatically run git gc; see the
--auto flag below for details. If you know what you're doing
and all you want is to disable this behavior permanently
without further considerations, just do:
$ git config --global gc.auto 0
OPTIONS
--aggressive
Usually git gc runs very quickly while providing good
disk space utilization and performance. This option will
cause git gc to more aggressively optimize the
repository at the expense of taking much more time. The
effects of this optimization are persistent, so this
option only needs to be used occasionally; every few
hundred changesets or so.
--auto
With this option, git gc checks whether any housekeeping
is required; if not, it exits without performing any
work. Some git commands run git gc --auto after
performing operations that could create many loose
objects.
Housekeeping is required if there are too many loose
objects or too many packs in the repository. If the
number of loose objects exceeds the value of the gc.auto
configuration variable, then all loose objects are
combined into a single pack using git repack -d -l.
Setting the value of gc.auto to 0 disables automatic
packing of loose objects.
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Git Manual GIT-GC(1)
If the number of packs exceeds the value of
gc.autopacklimit, then existing packs (except those
marked with a .keep file) are consolidated into a single
pack by using the -A option of git repack. Setting
gc.autopacklimit to 0 disables automatic consolidation
of packs.
--prune=<date>
Prune loose objects older than date (default is 2 weeks
ago, overridable by the config variable gc.pruneExpire).
This option is on by default.
--no-prune
Do not prune any loose objects.
--quiet
Suppress all progress reports.
CONFIGURATION
The optional configuration variable gc.reflogExpire can be
set to indicate how long historical entries within each
branch's reflog should remain available in this repository.
The setting is expressed as a length of time, for example 90
days or 3 months. It defaults to 90 days.
The optional configuration variable
gc.reflogExpireUnreachable can be set to indicate how long
historical reflog entries which are not part of the current
branch should remain available in this repository. These
types of entries are generally created as a result of using
git commit --amend or git rebase and are the commits prior
to the amend or rebase occurring. Since these changes are
not part of the current project most users will want to
expire them sooner. This option defaults to 30 days.
The above two configuration variables can be given to a
pattern. For example, this sets non-default expiry values
only to remote-tracking branches:
[gc "refs/remotes/*"]
reflogExpire = never
reflogexpireUnreachable = 3 days
The optional configuration variable gc.rerereresolved
indicates how long records of conflicted merge you resolved
earlier are kept. This defaults to 60 days.
The optional configuration variable gc.rerereunresolved
indicates how long records of conflicted merge you have not
resolved are kept. This defaults to 15 days.
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Git Manual GIT-GC(1)
The optional configuration variable gc.packrefs determines
if git gc runs git pack-refs. This can be set to "notbare"
to enable it within all non-bare repos or it can be set to a
boolean value. This defaults to true.
The optional configuration variable gc.aggressiveWindow
controls how much time is spent optimizing the delta
compression of the objects in the repository when the
--aggressive option is specified. The larger the value, the
more time is spent optimizing the delta compression. See the
documentation for the --window' option in git-repack(1) for
more details. This defaults to 250.
The optional configuration variable gc.pruneExpire controls
how old the unreferenced loose objects have to be before
they are pruned. The default is "2 weeks ago".
ATTRIBUTES
See attributes(5) for descriptions of the following
attributes:
+---------------+--------------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+--------------------------+
|Availability | developer/versioning/git |
+---------------+--------------------------+
|Stability | Uncommitted |
+---------------+--------------------------+
NOTES
git gc tries very hard to be safe about the garbage it
collects. In particular, it will keep not only objects
referenced by your current set of branches and tags, but
also objects referenced by the index, remote-tracking
branches, refs saved by git filter-branch in refs/original/,
or reflogs (which may reference commits in branches that
were later amended or rewound).
If you are expecting some objects to be collected and they
aren't, check all of those locations and decide whether it
makes sense in your case to remove those references.
HOOKS
The git gc --auto command will run the pre-auto-gc hook. See
githooks(4) for more information.
SEE ALSO
git-prune(1) git-reflog(1) git-repack(1) git-rerere(1)
GIT
Part of the git(1) suite
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Git Manual GIT-GC(1)
This software was built from source available at
https://java.net/projects/solaris-userland. The original
community source was downloaded from http://git-
core.googlecode.com/files/git-1.7.9.2.tar.gz
Further information about this software can be found on the
open source community website at http://git-scm.com/.
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