From 3c68de9b0107a0a15eef09edf86464d1434048e7 Mon Sep 17 00:00:00 2001
From: antirez <antirez@gmail.com>
Date: Tue, 2 Feb 2010 12:05:15 +0100
Subject: [PATCH] faster Set loading time from .rdb file resizing the hash
 table to the right size before loading elements

---
 redis.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/redis.c b/redis.c
index 36055c4c..e095e695 100644
--- a/redis.c
+++ b/redis.c
@@ -3335,6 +3335,10 @@ static robj *rdbLoadObject(int type, FILE *fp) {
 
         if ((listlen = rdbLoadLen(fp,NULL)) == REDIS_RDB_LENERR) return NULL;
         o = (type == REDIS_LIST) ? createListObject() : createSetObject();
+        /* It's faster to expand the dict to the right size asap in order
+         * to avoid rehashing */
+        if (type == REDIS_SET && listlen > DICT_HT_INITIAL_SIZE)
+            dictExpand(o->ptr,listlen);
         /* Load every single element of the list/set */
         while(listlen--) {
             robj *ele;