SYNOPSIS
--------
-'git-gc' [--prune]
+'git-gc' [--prune] [--aggressive] [--auto]
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 gitlink:git-add[1].
+created from prior invocations of linkgit:git-add[1].
Users are encouraged to run this task on a regular basis within
each repository to maintain good disk space utilization and good
-operating performance.
+operating performance. Some git commands may automatically run
+`git-gc`; see the `--auto` flag below for details.
OPTIONS
-------
repository at the same time (e.g. never use this option
in a cron script).
+--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.
++
+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.
Configuration
-------------
how long records of conflicted merge you have not resolved are
kept. This defaults to 15 days.
+The optional configuration variable 'gc.packrefs' determines if
+`git gc` runs `git-pack-refs`. This can be set to "nobare" 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 linkgit:git-repack[1] for
+more details. This defaults to 10.
See Also
--------
-gitlink:git-prune[1]
-gitlink:git-reflog[1]
-gitlink:git-repack[1]
-gitlink:git-rerere[1]
+linkgit:git-prune[1]
+linkgit:git-reflog[1]
+linkgit:git-repack[1]
+linkgit:git-rerere[1]
Author
------
GIT
---
-Part of the gitlink:git[7] suite
+Part of the linkgit:git[7] suite