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Merge branch 'np/maint-limit-delta-cache'

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* np/maint-limit-delta-cache:
  don't let the delta cache grow unbounded in 'git repack'
This commit is contained in:
Junio C Hamano 2009-08-10 22:16:09 -07:00
commit efd3f9fdbc
2 changed files with 12 additions and 4 deletions
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14
Documentation/config.txt
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@ -1218,12 +1218,20 @@ pack.compression::
pack.deltaCacheSize:: pack.deltaCacheSize::
The maximum memory in bytes used for caching deltas in The maximum memory in bytes used for caching deltas in
linkgit:git-pack-objects[1]. linkgit:git-pack-objects[1] before writing them out to a pack.
A value of 0 means no limit. Defaults to 0. 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:: pack.deltaCacheLimit::
The maximum size of a delta, that is cached in The maximum size of a delta, that is cached in
linkgit:git-pack-objects[1]. Defaults to 1000. 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.
pack.threads:: pack.threads::
Specifies the number of threads to spawn when searching for best Specifies the number of threads to spawn when searching for best

2
builtin-pack-objects.c
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@ -86,7 +86,7 @@ static int pack_compression_level = Z_DEFAULT_COMPRESSION;
static int pack_compression_seen; static int pack_compression_seen;
static unsigned long delta_cache_size = 0; static unsigned long delta_cache_size = 0;
static unsigned long max_delta_cache_size = 0; static unsigned long max_delta_cache_size = 256 * 1024 * 1024;
static unsigned long cache_max_small_delta_size = 1000; static unsigned long cache_max_small_delta_size = 1000;
static unsigned long window_memory_limit = 0; static unsigned long window_memory_limit = 0;