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builtin-pack-object: cache small deltas
Signed-off-by: Martin Koegler <mkoegler@auto.tuwien.ac.at> Signed-off-by: Junio C Hamano <junkio@cox.net>
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@ -572,6 +572,10 @@ pack.deltaCacheSize::
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gitlink:git-pack-objects[1].
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A value of 0 means no limit. Defaults to 0.
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pack.deltaCacheLimit::
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The maxium size of a delta, that is cached in
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gitlink:git-pack-objects[1]. Defaults to 1000.
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pull.octopus::
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The default merge strategy to use when pulling multiple branches
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at once.
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@ -79,6 +79,7 @@ static int pack_compression_seen;
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static unsigned long delta_cache_size = 0;
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static unsigned long max_delta_cache_size = 0;
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static unsigned long cache_max_small_delta_size = 1000;
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/*
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* The object names in objects array are hashed with this hashtable,
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@ -1403,6 +1404,9 @@ static int delta_cacheable(struct unpacked *trg, struct unpacked *src,
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if (max_delta_cache_size && delta_cache_size + delta_size > max_delta_cache_size)
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return 0;
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if (delta_size < cache_max_small_delta_size)
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return 1;
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/* cache delta, if objects are large enough compared to delta size */
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if ((src_size >> 20) + (trg_size >> 21) > (delta_size >> 10))
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return 1;
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@ -1654,6 +1658,10 @@ static int git_pack_config(const char *k, const char *v)
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max_delta_cache_size = git_config_int(k, v);
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return 0;
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}
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if (!strcmp(k, "pack.deltacachelimit")) {
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cache_max_small_delta_size = git_config_int(k, v);
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return 0;
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}
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return git_default_config(k, v);
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}
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