2 The size of the window used by linkgit:git-pack-objects[1] when no
3 window size is given on the command line. Defaults to 10.
6 The maximum delta depth used by linkgit:git-pack-objects[1] when no
7 maximum depth is given on the command line. Defaults to 50.
11 The maximum size of memory that is consumed by each thread
12 in linkgit:git-pack-objects[1] for pack window memory when
13 no limit is given on the command line. The value can be
14 suffixed with "k", "m", or "g". When left unconfigured (or
15 set explicitly to 0), there will be no limit.
18 An integer -1..9, indicating the compression level for objects
19 in a pack file. -1 is the zlib default. 0 means no
20 compression, and 1..9 are various speed/size tradeoffs, 9 being
21 slowest. If not set, defaults to core.compression. If that is
22 not set, defaults to -1, the zlib default, which is "a default
23 compromise between speed and compression (currently equivalent
26 Note that changing the compression level will not automatically recompress
27 all existing objects. You can force recompression by passing the -F option
28 to linkgit:git-repack[1].
31 An extended regular expression configuring a set of delta
32 islands. See "DELTA ISLANDS" in linkgit:git-pack-objects[1]
36 Specify an island name which gets to have its objects be
37 packed first. This creates a kind of pseudo-pack at the front
38 of one pack, so that the objects from the specified island are
39 hopefully faster to copy into any pack that should be served
40 to a user requesting these objects. In practice this means
41 that the island specified should likely correspond to what is
42 the most commonly cloned in the repo. See also "DELTA ISLANDS"
43 in linkgit:git-pack-objects[1].
46 The maximum memory in bytes used for caching deltas in
47 linkgit:git-pack-objects[1] before writing them out to a pack.
48 This cache is used to speed up the writing object phase by not
49 having to recompute the final delta result once the best match
50 for all objects is found. Repacking large repositories on machines
51 which are tight with memory might be badly impacted by this though,
52 especially if this cache pushes the system into swapping.
53 A value of 0 means no limit. The smallest size of 1 byte may be
54 used to virtually disable this cache. Defaults to 256 MiB.
56 pack.deltaCacheLimit::
57 The maximum size of a delta, that is cached in
58 linkgit:git-pack-objects[1]. This cache is used to speed up the
59 writing object phase by not having to recompute the final delta
60 result once the best match for all objects is found.
61 Defaults to 1000. Maximum value is 65535.
64 Specifies the number of threads to spawn when searching for best
65 delta matches. This requires that linkgit:git-pack-objects[1]
66 be compiled with pthreads otherwise this option is ignored with a
67 warning. This is meant to reduce packing time on multiprocessor
68 machines. The required amount of memory for the delta search window
69 is however multiplied by the number of threads.
70 Specifying 0 will cause Git to auto-detect the number of CPU's
71 and set the number of threads accordingly.
74 Specify the default pack index version. Valid values are 1 for
75 legacy pack index used by Git versions prior to 1.5.2, and 2 for
76 the new pack index with capabilities for packs larger than 4 GB
77 as well as proper protection against the repacking of corrupted
78 packs. Version 2 is the default. Note that version 2 is enforced
79 and this config option ignored whenever the corresponding pack is
82 If you have an old Git that does not understand the version 2 `*.idx` file,
83 cloning or fetching over a non native protocol (e.g. "http")
84 that will copy both `*.pack` file and corresponding `*.idx` file from the
85 other side may give you a repository that cannot be accessed with your
86 older version of Git. If the `*.pack` file is smaller than 2 GB, however,
87 you can use linkgit:git-index-pack[1] on the *.pack file to regenerate
91 The maximum size of a pack. This setting only affects
92 packing to a file when repacking, i.e. the git:// protocol
93 is unaffected. It can be overridden by the `--max-pack-size`
94 option of linkgit:git-repack[1]. Reaching this limit results
95 in the creation of multiple packfiles; which in turn prevents
96 bitmaps from being created.
97 The minimum size allowed is limited to 1 MiB.
98 The default is unlimited.
99 Common unit suffixes of 'k', 'm', or 'g' are
103 When true, git will use pack bitmaps (if available) when packing
104 to stdout (e.g., during the server side of a fetch). Defaults to
105 true. You should not generally need to turn this off unless
106 you are debugging pack bitmaps.
109 When true, git will default to using the '--sparse' option in
110 'git pack-objects' when the '--revs' option is present. This
111 algorithm only walks trees that appear in paths that introduce new
112 objects. This can have significant performance benefits when
113 computing a pack to send a small change. However, it is possible
114 that extra objects are added to the pack-file if the included
115 commits contain certain types of direct renames.
117 pack.writeBitmaps (deprecated)::
118 This is a deprecated synonym for `repack.writeBitmaps`.
120 pack.writeBitmapHashCache::
121 When true, git will include a "hash cache" section in the bitmap
122 index (if one is written). This cache can be used to feed git's
123 delta heuristics, potentially leading to better deltas between
124 bitmapped and non-bitmapped objects (e.g., when serving a fetch
125 between an older, bitmapped pack and objects that have been
126 pushed since the last gc). The downside is that it consumes 4
127 bytes per object of disk space, and that JGit's bitmap
128 implementation does not understand it, causing it to complain if
129 Git and JGit are used on the same repository. Defaults to false.