pack.window:: The size of the window used by linkgit:git-pack-objects[1] when no window size is given on the command line. Defaults to 10. pack.depth:: The maximum delta depth used by linkgit:git-pack-objects[1] when no maximum depth is given on the command line. Defaults to 50. Maximum value is 4095. pack.windowMemory:: The maximum size of memory that is consumed by each thread in linkgit:git-pack-objects[1] for pack window memory when no limit is given on the command line. The value can be suffixed with "k", "m", or "g". When left unconfigured (or set explicitly to 0), there will be no limit. pack.compression:: An integer -1..9, indicating the compression level for objects in a pack file. -1 is the zlib default. 0 means no compression, and 1..9 are various speed/size tradeoffs, 9 being slowest. If not set, defaults to core.compression. If that is not set, defaults to -1, the zlib default, which is "a default compromise between speed and compression (currently equivalent to level 6)." + Note that changing the compression level will not automatically recompress all existing objects. You can force recompression by passing the -F option to linkgit:git-repack[1]. pack.island:: An extended regular expression configuring a set of delta islands. See "DELTA ISLANDS" in linkgit:git-pack-objects[1] for details. pack.islandCore:: Specify an island name which gets to have its objects be packed first. This creates a kind of pseudo-pack at the front of one pack, so that the objects from the specified island are hopefully faster to copy into any pack that should be served to a user requesting these objects. In practice this means that the island specified should likely correspond to what is the most commonly cloned in the repo. See also "DELTA ISLANDS" in linkgit:git-pack-objects[1]. pack.deltaCacheSize:: The maximum memory in bytes used for caching deltas in linkgit:git-pack-objects[1] before writing them out to a pack. This cache is used to speed up the writing object phase by not having to recompute the final delta result once the best match for all objects is found. Repacking large repositories on machines which are tight with memory might be badly impacted by this though, especially if this cache pushes the system into swapping. A value of 0 means no limit. The smallest size of 1 byte may be used to virtually disable this cache. Defaults to 256 MiB. pack.deltaCacheLimit:: The maximum size of a delta, that is cached in linkgit:git-pack-objects[1]. This cache is used to speed up the writing object phase by not having to recompute the final delta result once the best match for all objects is found. Defaults to 1000. Maximum value is 65535. pack.threads:: Specifies the number of threads to spawn when searching for best delta matches. This requires that linkgit:git-pack-objects[1] 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. pack.indexVersion:: Specify the default pack index version. Valid values are 1 for legacy pack index used by Git versions prior to 1.5.2, and 2 for the new pack index with capabilities for packs larger than 4 GB as well as proper protection against the repacking of corrupted packs. Version 2 is the default. Note that version 2 is enforced and this config option ignored whenever the corresponding pack is larger than 2 GB. + If you have an old Git that does not understand the version 2 `*.idx` file, cloning or fetching over a non native protocol (e.g. "http") that will copy both `*.pack` file and corresponding `*.idx` file from the other side may give you a repository that cannot be accessed with your older version of Git. If the `*.pack` file is smaller than 2 GB, however, you can use linkgit:git-index-pack[1] on the *.pack file to regenerate the `*.idx` file. pack.packSizeLimit:: The maximum size of a pack. This setting only affects packing to a file when repacking, i.e. the git:// protocol is unaffected. It can be overridden by the `--max-pack-size` option of linkgit:git-repack[1]. Reaching this limit results in the creation of multiple packfiles; which in turn prevents bitmaps from being created. The minimum size allowed is limited to 1 MiB. The default is unlimited. Common unit suffixes of 'k', 'm', or 'g' are supported. pack.useBitmaps:: When true, git will use pack bitmaps (if available) when packing to stdout (e.g., during the server side of a fetch). Defaults to true. You should not generally need to turn this off unless you are debugging pack bitmaps. pack.useSparse:: When true, git will default to using the '--sparse' option in 'git pack-objects' when the '--revs' option is present. This algorithm only walks trees that appear in paths that introduce new objects. This can have significant performance benefits when computing a pack to send a small change. However, it is possible that extra objects are added to the pack-file if the included commits contain certain types of direct renames. Default is `false` unless `feature.experimental` is enabled. pack.writeBitmaps (deprecated):: This is a deprecated synonym for `repack.writeBitmaps`. pack.writeBitmapHashCache:: When true, git will include a "hash cache" section in the bitmap index (if one is written). This cache can be used to feed git's delta heuristics, potentially leading to better deltas between bitmapped and non-bitmapped objects (e.g., when serving a fetch between an older, bitmapped pack and objects that have been pushed since the last gc). The downside is that it consumes 4 bytes per object of disk space. Defaults to true.