| Junio C Hamano | 5229946 | 2006-12-28 00:59:38 | [diff] [blame] | 1 | <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" |
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| 229 | include::./stylesheets/xhtml11-manpage.css[] |
| 230 | /* Workarounds for IE6's broken and incomplete CSS2. */ |
| 231 | |
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| 241 | margin-bottom: 0.5em; |
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| 248 | } |
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| 254 | div.exampleblock-content { |
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| 257 | } |
| 258 | </style> |
| 259 | <title>git-gc(1)</title> |
| 260 | </head> |
| 261 | <body> |
| 262 | <div id="header"> |
| 263 | <h1> |
| 264 | git-gc(1) Manual Page |
| 265 | </h1> |
| 266 | <h2>NAME</h2> |
| 267 | <div class="sectionbody"> |
| 268 | <p>git-gc - |
| 269 | Cleanup unnecessary files and optimize the local repository |
| 270 | </p> |
| 271 | </div> |
| 272 | </div> |
| 273 | <h2>SYNOPSIS</h2> |
| 274 | <div class="sectionbody"> |
| Junio C Hamano | f2ce297 | 2007-05-20 19:12:09 | [diff] [blame] | 275 | <p><em>git-gc</em> [--prune] [--aggressive]</p> |
| Junio C Hamano | 5229946 | 2006-12-28 00:59:38 | [diff] [blame] | 276 | </div> |
| 277 | <h2>DESCRIPTION</h2> |
| 278 | <div class="sectionbody"> |
| 279 | <p>Runs a number of housekeeping tasks within the current repository, |
| 280 | such as compressing file revisions (to reduce disk space and increase |
| 281 | performance) and removing unreachable objects which may have been |
| 282 | created from prior invocations of <a href="git-add.html">git-add(1)</a>.</p> |
| 283 | <p>Users are encouraged to run this task on a regular basis within |
| 284 | each repository to maintain good disk space utilization and good |
| 285 | operating performance.</p> |
| 286 | </div> |
| Junio C Hamano | f65d928 | 2007-01-22 09:00:13 | [diff] [blame] | 287 | <h2>OPTIONS</h2> |
| 288 | <div class="sectionbody"> |
| 289 | <dl> |
| 290 | <dt> |
| 291 | --prune |
| 292 | </dt> |
| 293 | <dd> |
| 294 | <p> |
| 295 | Usually <tt>git-gc</tt> packs refs, expires old reflog entries, |
| 296 | packs loose objects, |
| 297 | and removes old <em>rerere</em> records. Removal |
| 298 | of unreferenced loose objects is an unsafe operation |
| 299 | while other git operations are in progress, so it is not |
| 300 | done by default. Pass this option if you want it, and only |
| 301 | when you know nobody else is creating new objects in the |
| 302 | repository at the same time (e.g. never use this option |
| 303 | in a cron script). |
| 304 | </p> |
| 305 | </dd> |
| Junio C Hamano | f2ce297 | 2007-05-20 19:12:09 | [diff] [blame] | 306 | <dt> |
| 307 | --aggressive |
| 308 | </dt> |
| 309 | <dd> |
| 310 | <p> |
| 311 | Usually <em>git-gc</em> runs very quickly while providing good disk |
| Junio C Hamano | 679d22d | 2007-06-02 21:13:44 | [diff] [blame^] | 312 | space utilization and performance. This option will cause |
| 313 | git-gc to more aggressively optimize the repository at the expense |
| Junio C Hamano | f2ce297 | 2007-05-20 19:12:09 | [diff] [blame] | 314 | of taking much more time. The effects of this optimization are |
| Junio C Hamano | 679d22d | 2007-06-02 21:13:44 | [diff] [blame^] | 315 | persistent, so this option only needs to be used occasionally; every |
| Junio C Hamano | f2ce297 | 2007-05-20 19:12:09 | [diff] [blame] | 316 | few hundred changesets or so. |
| 317 | </p> |
| 318 | </dd> |
| Junio C Hamano | f65d928 | 2007-01-22 09:00:13 | [diff] [blame] | 319 | </dl> |
| 320 | </div> |
| Junio C Hamano | 5229946 | 2006-12-28 00:59:38 | [diff] [blame] | 321 | <h2>Configuration</h2> |
| 322 | <div class="sectionbody"> |
| 323 | <p>The optional configuration variable <em>gc.reflogExpire</em> can be |
| 324 | set to indicate how long historical entries within each branch's |
| 325 | reflog should remain available in this repository. The setting is |
| 326 | expressed as a length of time, for example <em>90 days</em> or <em>3 months</em>. |
| 327 | It defaults to <em>90 days</em>.</p> |
| 328 | <p>The optional configuration variable <em>gc.reflogExpireUnreachable</em> |
| 329 | can be set to indicate how long historical reflog entries which |
| 330 | are not part of the current branch should remain available in |
| 331 | this repository. These types of entries are generally created as |
| 332 | a result of using <tt>git commit --amend</tt> or <tt>git rebase</tt> and are the |
| Junio C Hamano | f9771f6 | 2007-01-17 17:42:30 | [diff] [blame] | 333 | commits prior to the amend or rebase occurring. Since these changes |
| Junio C Hamano | 5229946 | 2006-12-28 00:59:38 | [diff] [blame] | 334 | are not part of the current project most users will want to expire |
| 335 | them sooner. This option defaults to <em>30 days</em>.</p> |
| 336 | <p>The optional configuration variable <em>gc.rerereresolved</em> indicates |
| 337 | how long records of conflicted merge you resolved earlier are |
| 338 | kept. This defaults to 60 days.</p> |
| 339 | <p>The optional configuration variable <em>gc.rerereunresolved</em> indicates |
| 340 | how long records of conflicted merge you have not resolved are |
| 341 | kept. This defaults to 15 days.</p> |
| Junio C Hamano | 9d52e57 | 2007-02-13 23:48:20 | [diff] [blame] | 342 | <p>The optional configuration variable <em>gc.packrefs</em> determines if |
| 343 | <tt>git gc</tt> runs <tt>git-pack-refs</tt>. Without the configuration, <tt>git-pack-refs</tt> |
| 344 | is not run in bare repositories by default, to allow older dumb-transport |
| 345 | clients fetch from the repository, but this will change in the future.</p> |
| Junio C Hamano | f2ce297 | 2007-05-20 19:12:09 | [diff] [blame] | 346 | <p>The optional configuration variable <em>gc.aggressiveWindow</em> controls how |
| 347 | much time is spent optimizing the delta compression of the objects in |
| 348 | the repository when the --aggressive option is specified. The larger |
| 349 | the value, the more time is spent optimizing the delta compression. See |
| 350 | the documentation for the --window' option in <a href="git-repack.html">git-repack(1)</a> for |
| 351 | more details. This defaults to 10.</p> |
| Junio C Hamano | 5229946 | 2006-12-28 00:59:38 | [diff] [blame] | 352 | </div> |
| 353 | <h2>See Also</h2> |
| 354 | <div class="sectionbody"> |
| 355 | <p><a href="git-prune.html">git-prune(1)</a> |
| 356 | <a href="git-reflog.html">git-reflog(1)</a> |
| 357 | <a href="git-repack.html">git-repack(1)</a> |
| 358 | <a href="git-rerere.html">git-rerere(1)</a></p> |
| 359 | </div> |
| 360 | <h2>Author</h2> |
| 361 | <div class="sectionbody"> |
| 362 | <p>Written by Shawn O. Pearce <spearce@spearce.org></p> |
| 363 | </div> |
| 364 | <h2>GIT</h2> |
| 365 | <div class="sectionbody"> |
| 366 | <p>Part of the <a href="git.html">git(7)</a> suite</p> |
| 367 | </div> |
| 368 | <div id="footer"> |
| 369 | <div id="footer-text"> |
| Junio C Hamano | 679d22d | 2007-06-02 21:13:44 | [diff] [blame^] | 370 | Last updated 02-Jun-2007 21:09:41 UTC |
| Junio C Hamano | 5229946 | 2006-12-28 00:59:38 | [diff] [blame] | 371 | </div> |
| 372 | </div> |
| 373 | </body> |
| 374 | </html> |
