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169 lines
7.7 KiB
Plaintext
169 lines
7.7 KiB
Plaintext
pack.window::
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The size of the window used by linkgit:git-pack-objects[1] when no
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window size is given on the command line. Defaults to 10.
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pack.depth::
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The maximum delta depth used by linkgit:git-pack-objects[1] when no
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maximum depth is given on the command line. Defaults to 50.
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Maximum value is 4095.
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pack.windowMemory::
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The maximum size of memory that is consumed by each thread
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in linkgit:git-pack-objects[1] for pack window memory when
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no limit is given on the command line. The value can be
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suffixed with "k", "m", or "g". When left unconfigured (or
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set explicitly to 0), there will be no limit.
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pack.compression::
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An integer -1..9, indicating the compression level for objects
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in a pack file. -1 is the zlib default. 0 means no
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compression, and 1..9 are various speed/size tradeoffs, 9 being
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slowest. If not set, defaults to core.compression. If that is
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not set, defaults to -1, the zlib default, which is "a default
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compromise between speed and compression (currently equivalent
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to level 6)."
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+
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Note that changing the compression level will not automatically recompress
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all existing objects. You can force recompression by passing the -F option
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to linkgit:git-repack[1].
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pack.allowPackReuse::
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When true, and when reachability bitmaps are enabled,
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pack-objects will try to send parts of the bitmapped packfile
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verbatim. This can reduce memory and CPU usage to serve fetches,
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but might result in sending a slightly larger pack. Defaults to
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true.
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pack.island::
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An extended regular expression configuring a set of delta
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islands. See "DELTA ISLANDS" in linkgit:git-pack-objects[1]
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for details.
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pack.islandCore::
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Specify an island name which gets to have its objects be
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packed first. This creates a kind of pseudo-pack at the front
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of one pack, so that the objects from the specified island are
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hopefully faster to copy into any pack that should be served
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to a user requesting these objects. In practice this means
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that the island specified should likely correspond to what is
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the most commonly cloned in the repo. See also "DELTA ISLANDS"
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in linkgit:git-pack-objects[1].
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pack.deltaCacheSize::
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The maximum memory in bytes used for caching deltas in
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linkgit:git-pack-objects[1] before writing them out to a pack.
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This cache is used to speed up the writing object phase by not
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having to recompute the final delta result once the best match
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for all objects is found. Repacking large repositories on machines
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which are tight with memory might be badly impacted by this though,
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especially if this cache pushes the system into swapping.
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A value of 0 means no limit. The smallest size of 1 byte may be
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used to virtually disable this cache. Defaults to 256 MiB.
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pack.deltaCacheLimit::
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The maximum size of a delta, that is cached in
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linkgit:git-pack-objects[1]. This cache is used to speed up the
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writing object phase by not having to recompute the final delta
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result once the best match for all objects is found.
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Defaults to 1000. Maximum value is 65535.
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pack.threads::
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Specifies the number of threads to spawn when searching for best
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delta matches. This requires that linkgit:git-pack-objects[1]
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be compiled with pthreads otherwise this option is ignored with a
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warning. This is meant to reduce packing time on multiprocessor
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machines. The required amount of memory for the delta search window
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is however multiplied by the number of threads.
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Specifying 0 will cause Git to auto-detect the number of CPU's
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and set the number of threads accordingly.
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pack.indexVersion::
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Specify the default pack index version. Valid values are 1 for
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legacy pack index used by Git versions prior to 1.5.2, and 2 for
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the new pack index with capabilities for packs larger than 4 GB
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as well as proper protection against the repacking of corrupted
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packs. Version 2 is the default. Note that version 2 is enforced
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and this config option ignored whenever the corresponding pack is
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larger than 2 GB.
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+
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If you have an old Git that does not understand the version 2 `*.idx` file,
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cloning or fetching over a non native protocol (e.g. "http")
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that will copy both `*.pack` file and corresponding `*.idx` file from the
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other side may give you a repository that cannot be accessed with your
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older version of Git. If the `*.pack` file is smaller than 2 GB, however,
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you can use linkgit:git-index-pack[1] on the *.pack file to regenerate
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the `*.idx` file.
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pack.packSizeLimit::
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The maximum size of a pack. This setting only affects
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packing to a file when repacking, i.e. the git:// protocol
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is unaffected. It can be overridden by the `--max-pack-size`
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option of linkgit:git-repack[1]. Reaching this limit results
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in the creation of multiple packfiles.
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+
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Note that this option is rarely useful, and may result in a larger total
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on-disk size (because Git will not store deltas between packs), as well
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as worse runtime performance (object lookup within multiple packs is
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slower than a single pack, and optimizations like reachability bitmaps
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cannot cope with multiple packs).
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+
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If you need to actively run Git using smaller packfiles (e.g., because your
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filesystem does not support large files), this option may help. But if
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your goal is to transmit a packfile over a medium that supports limited
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sizes (e.g., removable media that cannot store the whole repository),
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you are likely better off creating a single large packfile and splitting
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it using a generic multi-volume archive tool (e.g., Unix `split`).
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+
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The minimum size allowed is limited to 1 MiB. The default is unlimited.
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Common unit suffixes of 'k', 'm', or 'g' are supported.
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pack.useBitmaps::
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When true, git will use pack bitmaps (if available) when packing
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to stdout (e.g., during the server side of a fetch). Defaults to
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true. You should not generally need to turn this off unless
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you are debugging pack bitmaps.
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pack.useSparse::
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When true, git will default to using the '--sparse' option in
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'git pack-objects' when the '--revs' option is present. This
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algorithm only walks trees that appear in paths that introduce new
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objects. This can have significant performance benefits when
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computing a pack to send a small change. However, it is possible
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that extra objects are added to the pack-file if the included
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commits contain certain types of direct renames. Default is
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`true`.
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pack.preferBitmapTips::
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When selecting which commits will receive bitmaps, prefer a
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commit at the tip of any reference that is a suffix of any value
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of this configuration over any other commits in the "selection
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window".
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+
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Note that setting this configuration to `refs/foo` does not mean that
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the commits at the tips of `refs/foo/bar` and `refs/foo/baz` will
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necessarily be selected. This is because commits are selected for
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bitmaps from within a series of windows of variable length.
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+
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If a commit at the tip of any reference which is a suffix of any value
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of this configuration is seen in a window, it is immediately given
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preference over any other commit in that window.
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pack.writeBitmaps (deprecated)::
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This is a deprecated synonym for `repack.writeBitmaps`.
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pack.writeBitmapHashCache::
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When true, git will include a "hash cache" section in the bitmap
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index (if one is written). This cache can be used to feed git's
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delta heuristics, potentially leading to better deltas between
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bitmapped and non-bitmapped objects (e.g., when serving a fetch
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between an older, bitmapped pack and objects that have been
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pushed since the last gc). The downside is that it consumes 4
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bytes per object of disk space. Defaults to true.
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pack.writeReverseIndex::
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When true, git will write a corresponding .rev file (see:
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link:../technical/pack-format.html[Documentation/technical/pack-format.txt])
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for each new packfile that it writes in all places except for
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linkgit:git-fast-import[1] and in the bulk checkin mechanism.
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Defaults to false.
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