A packed archive is an efficient way to transfer set of objects
between two repositories, and also is an archival format which
is efficient to access. The packed archive format (.pack) is
-designed to be unpackable without having anything else, but for
-random access, accompanied with the pack index file (.idx).
+designed to be self contained so that it can be unpacked without
+any further information, but for fast, random access to the objects
+in the pack, a pack index file (.idx) will be generated.
+
+Placing both in the pack/ subdirectory of $GIT_OBJECT_DIRECTORY (or
+any of the directories on $GIT_ALTERNATE_OBJECT_DIRECTORIES)
+enables git to read from such an archive.
'git-unpack-objects' command can read the packed archive and
expand the objects contained in the pack into "one-file
commands when a pack is created on-the-fly for efficient network
transport by their peers.
-Placing both in the pack/ subdirectory of $GIT_OBJECT_DIRECTORY (or
-any of the directories on $GIT_ALTERNATE_OBJECT_DIRECTORIES)
-enables git to read from such an archive.
-
In a packed archive, an object is either stored as a compressed
whole, or as a difference from some other object. The latter is
often called a delta.
--revs::
Read the revision arguments from the standard input, instead of
individual object names. The revision arguments are processed
- the same way as gitlink:git-rev-list[1] with `--objects` flag
+ the same way as linkgit:git-rev-list[1] with `--objects` flag
uses its `commit` arguments to build the list of objects it
outputs. The objects on the resulting list are packed.
as if all refs under `$GIT_DIR/refs` are specified to be
included.
+--include-tag::
+ Include unasked-for annotated tags if the object they
+ reference was included in the resulting packfile. This
+ can be useful to send new tags to native git clients.
+
--window=[N], --depth=[N]::
These two options affect how the objects contained in
the pack are stored using delta compression. The
times to get to the necessary object.
The default value for --window is 10 and --depth is 50.
+--window-memory=[N]::
+ This option provides an additional limit on top of `--window`;
+ the window size will dynamically scale down so as to not take
+ up more than N bytes in memory. This is useful in
+ repositories with a mix of large and small objects to not run
+ out of memory with a large window, but still be able to take
+ advantage of the large window for the smaller objects. The
+ size can be suffixed with "k", "m", or "g".
+ `--window-memory=0` makes memory usage unlimited, which is the
+ default.
+
+--max-pack-size=<n>::
+ Maximum size of each output packfile, expressed in MiB.
+ If specified, multiple packfiles may be created.
+ The default is unlimited, unless the config variable
+ `pack.packSizeLimit` is set.
+
--incremental::
This flag causes an object already in a pack ignored
even if it appears in the standard input.
generated pack. If not specified, pack compression level is
determined first by pack.compression, then by core.compression,
and defaults to -1, the zlib default, if neither is set.
- Data copied from loose objects will be recompressed
- if core.legacyheaders was true when they were created or if
- the loose compression level (see core.loosecompression and
- core.compression) is now a different value than the pack
- compression level. Add --no-reuse-object if you want to force
- a uniform compression level on all data no matter the source.
+ Add \--no-reuse-object if you want to force a uniform compression
+ level on all data no matter the source.
--delta-base-offset::
A packed archive can express base object of a delta as
length, this option typically shrinks the resulting
packfile by 3-5 per-cent.
+--threads=<n>::
+ Specifies the number of threads to spawn when searching for best
+ delta matches. This requires that pack-objects be compiled with
+ pthreads otherwise this option is ignored with a warning.
+ This is meant to reduce packing time on multiprocessor machines.
+ The required amount of memory for the delta search window is
+ however multiplied by the number of threads.
+ Specifying 0 will cause git to auto-detect the number of CPU's
+ and set the number of threads accordingly.
+
--index-version=<version>[,<offset>]::
This is intended to be used by the test suite only. It allows
to force the version for the generated pack index, and to force
See Also
--------
-gitlink:git-rev-list[1]
-gitlink:git-repack[1]
-gitlink:git-prune-packed[1]
+linkgit:git-rev-list[1]
+linkgit:git-repack[1]
+linkgit:git-prune-packed[1]
GIT
---
-Part of the gitlink:git[7] suite
-
+Part of the linkgit:git[7] suite