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Configurable thresholds for encoded sorted sets

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This commit is contained in:
Pieter Noordhuis 2011-03-09 14:01:57 +01:00
parent e12b27acf7
commit 3ea204e103
4 changed files with 32 additions and 0 deletions
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6
redis.conf
View File

@ -340,6 +340,12 @@ list-max-ziplist-value 64
# set in order to use this special memory saving encoding.
set-max-intset-entries 512
# Similarly to hashes and lists, sorted sets are also specially encoded in
# order to save a lot of space. This encoding is only used when the length and
# elements of a sorted set are below the following limits:
zset-max-ziplist-entries 128
zset-max-ziplist-value 64
# Active rehashing uses 1 millisecond every 100 milliseconds of CPU time in
# order to help rehashing the main Redis hash table (the one mapping top-level
# keys to values). The hash table implementation redis uses (see dict.c)

20
src/config.c
View File

@ -261,6 +261,10 @@ void loadServerConfig(char *filename) {
server.list_max_ziplist_value = memtoll(argv[1], NULL);
} else if (!strcasecmp(argv[0],"set-max-intset-entries") && argc == 2) {
server.set_max_intset_entries = memtoll(argv[1], NULL);
} else if (!strcasecmp(argv[0],"zset-max-ziplist-entries") && argc == 2) {
server.zset_max_ziplist_entries = memtoll(argv[1], NULL);
} else if (!strcasecmp(argv[0],"zset-max-ziplist-value") && argc == 2) {
server.zset_max_ziplist_value = memtoll(argv[1], NULL);
} else if (!strcasecmp(argv[0],"rename-command") && argc == 3) {
struct redisCommand *cmd = lookupCommand(argv[1]);
int retval;
@ -443,6 +447,12 @@ void configSetCommand(redisClient *c) {
} else if (!strcasecmp(c->argv[2]->ptr,"set-max-intset-entries")) {
if (getLongLongFromObject(o,&ll) == REDIS_ERR || ll < 0) goto badfmt;
server.set_max_intset_entries = ll;
} else if (!strcasecmp(c->argv[2]->ptr,"zset-max-ziplist-entries")) {
if (getLongLongFromObject(o,&ll) == REDIS_ERR || ll < 0) goto badfmt;
server.zset_max_ziplist_entries = ll;
} else if (!strcasecmp(c->argv[2]->ptr,"zset-max-ziplist-value")) {
if (getLongLongFromObject(o,&ll) == REDIS_ERR || ll < 0) goto badfmt;
server.zset_max_ziplist_value = ll;
} else {
addReplyErrorFormat(c,"Unsupported CONFIG parameter: %s",
(char*)c->argv[2]->ptr);
@ -594,6 +604,16 @@ void configGetCommand(redisClient *c) {
addReplyBulkLongLong(c,server.set_max_intset_entries);
matches++;
}
if (stringmatch(pattern,"zset-max-ziplist-entries",0)) {
addReplyBulkCString(c,"zset-max-ziplist-entries");
addReplyBulkLongLong(c,server.zset_max_ziplist_entries);
matches++;
}
if (stringmatch(pattern,"zset-max-ziplist-value",0)) {
addReplyBulkCString(c,"zset-max-ziplist-value");
addReplyBulkLongLong(c,server.zset_max_ziplist_value);
matches++;
}
setDeferredMultiBulkLength(c,replylen,matches*2);
}

2
src/redis.c
View File

@ -821,6 +821,8 @@ void initServerConfig() {
server.list_max_ziplist_entries = REDIS_LIST_MAX_ZIPLIST_ENTRIES;
server.list_max_ziplist_value = REDIS_LIST_MAX_ZIPLIST_VALUE;
server.set_max_intset_entries = REDIS_SET_MAX_INTSET_ENTRIES;
server.zset_max_ziplist_entries = REDIS_ZSET_MAX_ZIPLIST_ENTRIES;
server.zset_max_ziplist_value = REDIS_ZSET_MAX_ZIPLIST_VALUE;
server.shutdown_asap = 0;
server.cache_flush_delay = 0;

4
src/redis.h
View File

@ -197,6 +197,8 @@
#define REDIS_LIST_MAX_ZIPLIST_ENTRIES 512
#define REDIS_LIST_MAX_ZIPLIST_VALUE 64
#define REDIS_SET_MAX_INTSET_ENTRIES 512
#define REDIS_ZSET_MAX_ZIPLIST_ENTRIES 128
#define REDIS_ZSET_MAX_ZIPLIST_VALUE 64
/* Sets operations codes */
#define REDIS_OP_UNION 0
@ -470,6 +472,8 @@ struct redisServer {
size_t list_max_ziplist_entries;
size_t list_max_ziplist_value;
size_t set_max_intset_entries;
size_t zset_max_ziplist_entries;
size_t zset_max_ziplist_value;
time_t unixtime; /* Unix time sampled every second. */
/* Virtual memory I/O threads stuff */
/* An I/O thread process an element taken from the io_jobs queue and