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571 <div id="header">
572 <h1>
573 git-pack-refs(1) Manual Page
574 </h1>
575 <h2>NAME</h2>
576 <div class="sectionbody">
577 <p>git-pack-refs -
578 Pack heads and tags for efficient repository access
579 </p>
580 </div>
581 </div>
582 <div id="content">
583 <h2 id="_synopsis">SYNOPSIS</h2>
584 <div class="sectionbody">
585 <div class="verseblock">
586 <div class="verseblock-content"><em>git pack-refs</em> [--all] [--no-prune]</div>
587 <div class="verseblock-attribution">
588 </div></div>
589 </div>
590 <h2 id="_description">DESCRIPTION</h2>
591 <div class="sectionbody">
592 <div class="paragraph"><p>Traditionally, tips of branches and tags (collectively known as
593 <em>refs</em>) were stored one file per ref under <tt>$GIT_DIR/refs</tt>
594 directory. While many branch tips tend to be updated often,
595 most tags and some branch tips are never updated. When a
596 repository has hundreds or thousands of tags, this
597 one-file-per-ref format both wastes storage and hurts
598 performance.</p></div>
599 <div class="paragraph"><p>This command is used to solve the storage and performance
600 problem by stashing the refs in a single file,
601 <tt>$GIT_DIR/packed-refs</tt>. When a ref is missing from the
602 traditional <tt>$GIT_DIR/refs</tt> hierarchy, it is looked up in this
603 file and used if found.</p></div>
604 <div class="paragraph"><p>Subsequent updates to branches always create new files under
605 <tt>$GIT_DIR/refs</tt> hierarchy.</p></div>
606 <div class="paragraph"><p>A recommended practice to deal with a repository with too many
607 refs is to pack its refs with <tt>--all --prune</tt> once, and
608 occasionally run <tt>git pack-refs --prune</tt>. Tags are by
609 definition stationary and are not expected to change. Branch
610 heads will be packed with the initial <tt>pack-refs --all</tt>, but
611 only the currently active branch heads will become unpacked,
612 and the next <tt>pack-refs</tt> (without <tt>--all</tt>) will leave them
613 unpacked.</p></div>
614 </div>
615 <h2 id="_options">OPTIONS</h2>
616 <div class="sectionbody">
617 <div class="dlist"><dl>
618 <dt class="hdlist1">
619 --all
620 </dt>
621 <dd>
623 The command by default packs all tags and refs that are already
624 packed, and leaves other refs
625 alone. This is because branches are expected to be actively
626 developed and packing their tips does not help performance.
627 This option causes branch tips to be packed as well. Useful for
628 a repository with many branches of historical interests.
629 </p>
630 </dd>
631 <dt class="hdlist1">
632 --no-prune
633 </dt>
634 <dd>
636 The command usually removes loose refs under <tt>$GIT_DIR/refs</tt>
637 hierarchy after packing them. This option tells it not to.
638 </p>
639 </dd>
640 </dl></div>
641 </div>
642 <h2 id="_git">GIT</h2>
643 <div class="sectionbody">
644 <div class="paragraph"><p>Part of the <a href="git.html">git(1)</a> suite</p></div>
645 </div>
646 </div>
647 <div id="footnotes"><hr /></div>
648 <div id="footer">
649 <div id="footer-text">
650 Last updated 2011-09-21 23:01:14 PDT
651 </div>
652 </div>
653 </body>
654 </html>