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Diffstat (limited to 'Documentation/config/pack.txt')
| -rw-r--r-- | Documentation/config/pack.txt | 27 |
1 files changed, 21 insertions, 6 deletions
diff --git a/Documentation/config/pack.txt b/Documentation/config/pack.txt index c0844d8d8e..ad7f73a1ea 100644 --- a/Documentation/config/pack.txt +++ b/Documentation/config/pack.txt @@ -99,12 +99,23 @@ pack.packSizeLimit:: 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. + in the creation of multiple packfiles. ++ +Note that this option is rarely useful, and may result in a larger total +on-disk size (because Git will not store deltas between packs), as well +as worse runtime performance (object lookup within multiple packs is +slower than a single pack, and optimizations like reachability bitmaps +cannot cope with multiple packs). ++ +If you need to actively run Git using smaller packfiles (e.g., because your +filesystem does not support large files), this option may help. But if +your goal is to transmit a packfile over a medium that supports limited +sizes (e.g., removable media that cannot store the whole repository), +you are likely better off creating a single large packfile and splitting +it using a generic multi-volume archive tool (e.g., Unix `split`). ++ +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 @@ -148,6 +159,10 @@ pack.writeBitmapHashCache:: 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. ++ +When writing a multi-pack reachability bitmap, no new namehashes are +computed; instead, any namehashes stored in an existing bitmap are +permuted into their appropriate location when writing a new bitmap. pack.writeReverseIndex:: When true, git will write a corresponding .rev file (see: |