JGit configuration options

Legend

git option	description
✅	option defined by native git
⃞	jgit custom option not supported by native git

core options

option	default	git option	description
core.bigFileThreshold	52428800 (50 MiB)	✅	Maximum file size that will be delta compressed. Files larger than this size are stored deflated, without attempting delta compression.
core.compression	-1 (default compression)	✅	An integer -1..9, indicating a default compression level. -1 is the zlib default. 0 means no compression, and 1..9 are various speed/size tradeoffs, 9 being slowest.

gc options

option	default	git option	description
gc.aggressiveDepth	50	✅	The depth parameter used in the delta compression algorithm used by aggressive garbage collection.
gc.aggressiveWindow	250	✅	The window size parameter used in the delta compression algorithm used by aggressive garbage collection.
gc.auto	6700	✅	Number of loose objects until auto gc combines all loose objects into a pack and consolidates all existing packs into one. Setting to 0 disables automatic packing of loose objects.
gc.autoDetach	true	✅	Make auto gc return immediately and run in background.
gc.autoPackLimit	50	✅	Number of packs until auto gc consolidates existing packs (except those marked with a .keep file) into a single pack. Setting gc.autoPackLimit to 0 disables automatic consolidation of packs.
gc.logExpiry	1.day.ago	✅	If the file gc.log exists, then auto gc will print its content and exit successfully instead of running unless that file is more than gc.logExpiry old.
gc.pruneExpire	2.weeks.ago	✅	Grace period after which unreachable objects will be pruned.
gc.prunePackExpire	1.hour.ago	⃞	Grace period after which packfiles only containing unreachable objects will be pruned.

pack options

option	default	git option	description
pack.bitmapContiguousCommitCount	100	⃞	Count of most recent commits for which to build bitmaps.
pack.bitmapDistantCommitSpan	5000	⃞	Span of commits when building bitmaps for distant history.
pack.bitmapExcessiveBranchCount	100	⃞	The count of branches deemed “excessive”. If the count of branches in a repository exceeds this number and bitmaps are enabled, “inactive” branches will have fewer bitmaps than “active” branches.
pack.bitmapInactiveBranchAgeInDays	90	⃞	Age in days that marks a branch as “inactive” for bitmap creation.
pack.bitmapRecentCommitCount	20000	⃞	Count at which to switch from bitmapRecentCommitSpan to bitmapDistantCommitSpan.
pack.bitmapRecentCommitSpan	100	⃞	Span of commits when building bitmaps for recent history.
pack.buildBitmaps	true	⃞ synonym for repack.writeBitmaps	Whether index writer is allowed to build bitmaps for indexes.
pack.compression	core.compression	✅	Compression level applied to objects in the pack.
pack.cutDeltaChains	false	⃞	Whether existing delta chains should be cut at {@link #getMaxDeltaDepth()
pack.deltaCacheLimit	100	✅	Maximum size in bytes of a delta to cache.
pack.deltaCacheSize	52428800 (50 MiB)	✅	Size of the in-memory delta cache.
pack.deltaCompression	true	⃞	Whether the writer will create new deltas on the fly. true if the pack writer will create a new delta when either pack.reuseDeltas is false, or no suitable delta is available for reuse.
pack.depth	50	✅	Maximum depth of delta chain set up for the pack writer.
pack.indexVersion	2	✅	Pack index file format version.
pack.minSizePreventRacyPack	104857600 (100 MiB)	⃞	Minimum packfile size for which we wait before opening a newly written pack to prevent its lastModified timestamp could be racy if pack.waitPreventRacyPack is true.
pack.preserveOldPacks	false	⃞	Whether to preserve old packs in a preserved directory.
prunePreserved, only via API of PackConfig	false	⃞	Whether to remove preserved pack files in a preserved directory.
pack.reuseDeltas	true	⃞	Whether to reuse deltas existing in repository.
pack.reuseObjects	true	⃞	Whether to reuse existing objects representation in repository.
pack.singlePack	false	⃞	Whether all of refs/* should be packed in a single pack.
pack.threads	0 (auto-detect number of processors)	✅	Number of threads to use for delta compression.
pack.waitPreventRacyPack	false	⃞	Whether we wait before opening a newly written pack to prevent its lastModified timestamp could be racy.
pack.window	10	✅	Number of objects to try when looking for a delta base per thread searching for deltas.
pack.windowMemory	0 (unlimited)	✅	Maximum number of bytes to put into the delta search window.