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diff --git a/Documentation/config/gc.txt b/Documentation/config/gc.txt new file mode 100644 index 0000000..664a3c2 --- /dev/null +++ b/Documentation/config/gc.txt @@ -0,0 +1,180 @@ +gc.aggressiveDepth:: + The depth parameter used in the delta compression + algorithm used by 'git gc --aggressive'. This defaults + to 50, which is the default for the `--depth` option when + `--aggressive` isn't in use. ++ +See the documentation for the `--depth` option in +linkgit:git-repack[1] for more details. + +gc.aggressiveWindow:: + The window size parameter used in the delta compression + algorithm used by 'git gc --aggressive'. This defaults + to 250, which is a much more aggressive window size than + the default `--window` of 10. ++ +See the documentation for the `--window` option in +linkgit:git-repack[1] for more details. + +gc.auto:: + When there are approximately more than this many loose + objects in the repository, `git gc --auto` will pack them. + Some Porcelain commands use this command to perform a + light-weight garbage collection from time to time. The + default value is 6700. ++ +Setting this to 0 disables not only automatic packing based on the +number of loose objects, but also any other heuristic `git gc --auto` will +otherwise use to determine if there's work to do, such as +`gc.autoPackLimit`. + +gc.autoPackLimit:: + When there are more than this many packs that are not + marked with `*.keep` file in the repository, `git gc + --auto` consolidates them into one larger pack. The + default value is 50. Setting this to 0 disables it. + Setting `gc.auto` to 0 will also disable this. ++ +See the `gc.bigPackThreshold` configuration variable below. When in +use, it'll affect how the auto pack limit works. + +gc.autoDetach:: + Make `git gc --auto` return immediately and run in the background + if the system supports it. Default is true. + +gc.bigPackThreshold:: + If non-zero, all non-cruft packs larger than this limit are kept + when `git gc` is run. This is very similar to + `--keep-largest-pack` except that all non-cruft packs that meet + the threshold are kept, not just the largest pack. Defaults to + zero. Common unit suffixes of 'k', 'm', or 'g' are supported. ++ +Note that if the number of kept packs is more than gc.autoPackLimit, +this configuration variable is ignored, all packs except the base pack +will be repacked. After this the number of packs should go below +gc.autoPackLimit and gc.bigPackThreshold should be respected again. ++ +If the amount of memory estimated for `git repack` to run smoothly is +not available and `gc.bigPackThreshold` is not set, the largest pack +will also be excluded (this is the equivalent of running `git gc` with +`--keep-largest-pack`). + +gc.writeCommitGraph:: + If true, then gc will rewrite the commit-graph file when + linkgit:git-gc[1] is run. When using `git gc --auto` + the commit-graph will be updated if housekeeping is + required. Default is true. See linkgit:git-commit-graph[1] + for details. + +gc.logExpiry:: + If the file gc.log exists, then `git gc --auto` will print + its content and exit with status zero instead of running + unless that file is more than 'gc.logExpiry' old. Default is + "1.day". See `gc.pruneExpire` for more ways to specify its + value. + +gc.packRefs:: + Running `git pack-refs` in a repository renders it + unclonable by Git versions prior to 1.5.1.2 over dumb + transports such as HTTP. This variable determines whether + '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. The default is `true`. + +gc.cruftPacks:: + Store unreachable objects in a cruft pack (see + linkgit:git-repack[1]) instead of as loose objects. The default + is `true`. + +gc.maxCruftSize:: + Limit the size of new cruft packs when repacking. When + specified in addition to `--max-cruft-size`, the command line + option takes priority. See the `--max-cruft-size` option of + linkgit:git-repack[1]. + +gc.pruneExpire:: + When 'git gc' is run, it will call 'prune --expire 2.weeks.ago' + (and 'repack --cruft --cruft-expiration 2.weeks.ago' if using + cruft packs via `gc.cruftPacks` or `--cruft`). Override the + grace period with this config variable. The value "now" may be + used to disable this grace period and always prune unreachable + objects immediately, or "never" may be used to suppress pruning. + This feature helps prevent corruption when 'git gc' runs + concurrently with another process writing to the repository; see + the "NOTES" section of linkgit:git-gc[1]. + +gc.worktreePruneExpire:: + When 'git gc' is run, it calls + 'git worktree prune --expire 3.months.ago'. + This config variable can be used to set a different grace + period. The value "now" may be used to disable the grace + period and prune `$GIT_DIR/worktrees` immediately, or "never" + may be used to suppress pruning. + +gc.reflogExpire:: +gc.<pattern>.reflogExpire:: + 'git reflog expire' removes reflog entries older than + this time; defaults to 90 days. The value "now" expires all + entries immediately, and "never" suppresses expiration + altogether. With "<pattern>" (e.g. + "refs/stash") in the middle the setting applies only to + the refs that match the <pattern>. + +gc.reflogExpireUnreachable:: +gc.<pattern>.reflogExpireUnreachable:: + 'git reflog expire' removes reflog entries older than + this time and are not reachable from the current tip; + defaults to 30 days. The value "now" expires all entries + immediately, and "never" suppresses expiration altogether. + With "<pattern>" (e.g. "refs/stash") + in the middle, the setting applies only to the refs that + match the <pattern>. ++ +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, which is why the +default is more aggressive than `gc.reflogExpire`. + +gc.recentObjectsHook:: + When considering whether or not to remove an object (either when + generating a cruft pack or storing unreachable objects as + loose), use the shell to execute the specified command(s). + Interpret their output as object IDs which Git will consider as + "recent", regardless of their age. By treating their mtimes as + "now", any objects (and their descendants) mentioned in the + output will be kept regardless of their true age. ++ +Output must contain exactly one hex object ID per line, and nothing +else. Objects which cannot be found in the repository are ignored. +Multiple hooks are supported, but all must exit successfully, else the +operation (either generating a cruft pack or unpacking unreachable +objects) will be halted. + +gc.repackFilter:: + When repacking, use the specified filter to move certain + objects into a separate packfile. See the + `--filter=<filter-spec>` option of linkgit:git-repack[1]. + +gc.repackFilterTo:: + When repacking and using a filter, see `gc.repackFilter`, the + specified location will be used to create the packfile + containing the filtered out objects. **WARNING:** The + specified location should be accessible, using for example the + Git alternates mechanism, otherwise the repo could be + considered corrupt by Git as it migh not be able to access the + objects in that packfile. See the `--filter-to=<dir>` option + of linkgit:git-repack[1] and the `objects/info/alternates` + section of linkgit:gitrepository-layout[5]. + +gc.rerereResolved:: + Records of conflicted merge you resolved earlier are + kept for this many days when 'git rerere gc' is run. + You can also use more human-readable "1.month.ago", etc. + The default is 60 days. See linkgit:git-rerere[1]. + +gc.rerereUnresolved:: + Records of conflicted merge you have not resolved are + kept for this many days when 'git rerere gc' is run. + You can also use more human-readable "1.month.ago", etc. + The default is 15 days. See linkgit:git-rerere[1]. |