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LFU: make counter log factor and decay time configurable.

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This commit is contained in:
antirez
2016-07-20 15:00:35 +02:00
parent 6416ab19d0
commit 6854c7b9ee
5 changed files with 95 additions and 14 deletions
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4
src/server.h
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@ -129,6 +129,8 @@ typedef long long mstime_t; /* millisecond time type. */
#define CONFIG_DEFAULT_REPL_DISABLE_TCP_NODELAY 0
#define CONFIG_DEFAULT_MAXMEMORY 0
#define CONFIG_DEFAULT_MAXMEMORY_SAMPLES 5
#define CONFIG_DEFAULT_LFU_LOG_FACTOR 10
#define CONFIG_DEFAULT_LFU_DECAY_TIME 1
#define CONFIG_DEFAULT_AOF_FILENAME "appendonly.aof"
#define CONFIG_DEFAULT_AOF_NO_FSYNC_ON_REWRITE 0
#define CONFIG_DEFAULT_AOF_LOAD_TRUNCATED 1
@ -981,6 +983,8 @@ struct redisServer {
unsigned long long maxmemory; /* Max number of memory bytes to use */
int maxmemory_policy; /* Policy for key eviction */
int maxmemory_samples; /* Pricision of random sampling */
unsigned int lfu_log_factor; /* LFU logarithmic counter factor. */
unsigned int lfu_decay_time; /* LFU counter decay factor. */
/* Blocked clients */
unsigned int bpop_blocked_clients; /* Number of clients blocked by lists */
list *unblocked_clients; /* list of clients to unblock before next loop */