From: Jeff Hostetler Date: Wed, 22 Mar 2017 17:14:20 +0000 (+0000) Subject: name-hash: specify initial size for istate.dir_hash table X-Git-Tag: v2.13.0-rc0~53^2~7 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=16f9b4cdd31de2b8185c5c717efa6d28c56b3c74;p=thirdparty%2Fgit.git name-hash: specify initial size for istate.dir_hash table Specify an initial size for the istate.dir_hash HashMap matching the size of the istate.name_hash. Previously hashmap_init() was given 0, causing a 64 bucket hashmap to be created. When working with very large repositories, this would cause numerous rehash() calls to realloc and rebalance the hashmap. This is especially true when the worktree is deep, with many directories containing a few files. Signed-off-by: Jeff Hostetler Signed-off-by: Junio C Hamano --- diff --git a/name-hash.c b/name-hash.c index 6d9f23e932..3f7722a63b 100644 --- a/name-hash.c +++ b/name-hash.c @@ -120,7 +120,8 @@ static void lazy_init_name_hash(struct index_state *istate) return; hashmap_init(&istate->name_hash, (hashmap_cmp_fn) cache_entry_cmp, istate->cache_nr); - hashmap_init(&istate->dir_hash, (hashmap_cmp_fn) dir_entry_cmp, 0); + hashmap_init(&istate->dir_hash, (hashmap_cmp_fn) dir_entry_cmp, + istate->cache_nr); for (nr = 0; nr < istate->cache_nr; nr++) hash_index_entry(istate, istate->cache[nr]); istate->name_hash_initialized = 1;