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117 lines
4.3 KiB
117 lines
4.3 KiB
git-gc(1) |
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========= |
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NAME |
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---- |
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git-gc - Cleanup unnecessary files and optimize the local repository |
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SYNOPSIS |
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-------- |
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'git-gc' [--prune] [--aggressive] [--auto] |
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DESCRIPTION |
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----------- |
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Runs a number of housekeeping tasks within the current repository, |
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such as compressing file revisions (to reduce disk space and increase |
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performance) and removing unreachable objects which may have been |
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created from prior invocations of gitlink:git-add[1]. |
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Users are encouraged to run this task on a regular basis within |
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each repository to maintain good disk space utilization and good |
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operating performance. Some git commands may automatically run |
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`git-gc`; see the `--auto` flag below for details. |
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OPTIONS |
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------- |
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--prune:: |
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Usually `git-gc` packs refs, expires old reflog entries, |
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packs loose objects, |
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and removes old 'rerere' records. Removal |
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of unreferenced loose objects is an unsafe operation |
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while other git operations are in progress, so it is not |
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done by default. Pass this option if you want it, and only |
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when you know nobody else is creating new objects in the |
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repository at the same time (e.g. never use this option |
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in a cron script). |
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--aggressive:: |
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Usually 'git-gc' runs very quickly while providing good disk |
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space utilization and performance. This option will cause |
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git-gc to more aggressively optimize the repository at the expense |
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of taking much more time. The effects of this optimization are |
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persistent, so this option only needs to be used occasionally; every |
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few hundred changesets or so. |
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--auto:: |
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With this option, `git gc` checks whether any housekeeping is |
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required; if not, it exits without performing any work. |
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Some git commands run `git gc --auto` after performing |
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operations that could create many loose objects. |
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+ |
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Housekeeping is required if there are too many loose objects or |
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too many packs in the repository. If the number of loose objects |
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exceeds the value of the `gc.auto` configuration variable, then |
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all loose objects are combined into a single pack using |
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`git-repack -d -l`. Setting the value of `gc.auto` to 0 |
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disables automatic packing of loose objects. |
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+ |
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If the number of packs exceeds the value of `gc.autopacklimit`, |
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then existing packs (except those marked with a `.keep` file) |
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are consolidated into a single pack by using the `-A` option of |
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`git-repack`. Setting `gc.autopacklimit` to 0 disables |
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automatic consolidation of packs. |
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Configuration |
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------------- |
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The optional configuration variable 'gc.reflogExpire' can be |
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set to indicate how long historical entries within each branch's |
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reflog should remain available in this repository. The setting is |
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expressed as a length of time, for example '90 days' or '3 months'. |
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It defaults to '90 days'. |
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The optional configuration variable 'gc.reflogExpireUnreachable' |
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can be set to indicate how long historical reflog entries which |
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are not part of the current branch should remain available in |
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this repository. These types of entries are generally created as |
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a result of using `git commit \--amend` or `git rebase` and are the |
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commits prior to the amend or rebase occurring. Since these changes |
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are not part of the current project most users will want to expire |
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them sooner. This option defaults to '30 days'. |
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The optional configuration variable 'gc.rerereresolved' indicates |
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how long records of conflicted merge you resolved earlier are |
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kept. This defaults to 60 days. |
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The optional configuration variable 'gc.rerereunresolved' indicates |
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how long records of conflicted merge you have not resolved are |
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kept. This defaults to 15 days. |
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The optional configuration variable 'gc.packrefs' determines if |
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`git gc` runs `git-pack-refs`. Without the configuration, `git-pack-refs` |
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is not run in bare repositories by default, to allow older dumb-transport |
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clients fetch from the repository, but this will change in the future. |
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The optional configuration variable 'gc.aggressiveWindow' controls how |
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much time is spent optimizing the delta compression of the objects in |
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the repository when the --aggressive option is specified. The larger |
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the value, the more time is spent optimizing the delta compression. See |
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the documentation for the --window' option in gitlink:git-repack[1] for |
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more details. This defaults to 10. |
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See Also |
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-------- |
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gitlink:git-prune[1] |
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gitlink:git-reflog[1] |
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gitlink:git-repack[1] |
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gitlink:git-rerere[1] |
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Author |
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------ |
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Written by Shawn O. Pearce <spearce@spearce.org> |
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GIT |
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--- |
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Part of the gitlink:git[7] suite
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