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Latency monitor: collect slow commands.
We introduce the distinction between slow and fast commands since those are two different sources of latency. An O(1) or O(log N) command without side effects (can't trigger deletion of large objects as a side effect of its execution) if delayed is a symptom of inherent latency of the system. A non-fast command (commands that may run large O(N) computations) if delayed may just mean that the user is executing slow operations. The advices LATENCY should provide in this two different cases are different, so we log the two classes of commands in a separated way.
This commit is contained in:
antirez
parent
d7a07a2012
commit
8612e6de88
@ -35,7 +35,7 @@ void latencyAddSample(char *event, mstime_t latency);
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/* Add the sample only if the elapsed time is >= to the configured threshold. */
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#define latencyAddSampleIfNeeded(event,var) \
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if (server.latency_monitor_threshold && \\
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if (server.latency_monitor_threshold && \
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var >= server.latency_monitor_threshold) \
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latencyAddSample(event,var);
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142
src/redis.c
142
src/redis.c
@ -115,48 +115,52 @@ struct redisCommand *commandTable;
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* M: Do not automatically propagate the command on MONITOR.
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* k: Perform an implicit ASKING for this command, so the command will be
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* accepted in cluster mode if the slot is marked as 'importing'.
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* F: Fast command: O(1) or O(log(N)) command that should never delay
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* its execution as long as the kernel scheduler is giving us time.
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* Note that commands that may trigger a DEL as a side effect (like SET)
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* are not fast commands.
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*/
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struct redisCommand redisCommandTable[] = {
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{"get",getCommand,2,"r",0,NULL,1,1,1,0,0},
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{"get",getCommand,2,"rF",0,NULL,1,1,1,0,0},
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{"set",setCommand,-3,"wm",0,NULL,1,1,1,0,0},
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{"setnx",setnxCommand,3,"wm",0,NULL,1,1,1,0,0},
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{"setnx",setnxCommand,3,"wmF",0,NULL,1,1,1,0,0},
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{"setex",setexCommand,4,"wm",0,NULL,1,1,1,0,0},
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{"psetex",psetexCommand,4,"wm",0,NULL,1,1,1,0,0},
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{"append",appendCommand,3,"wm",0,NULL,1,1,1,0,0},
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{"strlen",strlenCommand,2,"r",0,NULL,1,1,1,0,0},
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{"strlen",strlenCommand,2,"rF",0,NULL,1,1,1,0,0},
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{"del",delCommand,-2,"w",0,NULL,1,-1,1,0,0},
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{"exists",existsCommand,2,"r",0,NULL,1,1,1,0,0},
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{"exists",existsCommand,2,"rF",0,NULL,1,1,1,0,0},
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{"setbit",setbitCommand,4,"wm",0,NULL,1,1,1,0,0},
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{"getbit",getbitCommand,3,"r",0,NULL,1,1,1,0,0},
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{"getbit",getbitCommand,3,"rF",0,NULL,1,1,1,0,0},
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{"setrange",setrangeCommand,4,"wm",0,NULL,1,1,1,0,0},
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{"getrange",getrangeCommand,4,"r",0,NULL,1,1,1,0,0},
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{"substr",getrangeCommand,4,"r",0,NULL,1,1,1,0,0},
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{"incr",incrCommand,2,"wm",0,NULL,1,1,1,0,0},
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{"decr",decrCommand,2,"wm",0,NULL,1,1,1,0,0},
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{"incr",incrCommand,2,"wmF",0,NULL,1,1,1,0,0},
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{"decr",decrCommand,2,"wmF",0,NULL,1,1,1,0,0},
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{"mget",mgetCommand,-2,"r",0,NULL,1,-1,1,0,0},
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{"rpush",rpushCommand,-3,"wm",0,NULL,1,1,1,0,0},
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{"lpush",lpushCommand,-3,"wm",0,NULL,1,1,1,0,0},
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{"rpushx",rpushxCommand,3,"wm",0,NULL,1,1,1,0,0},
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{"lpushx",lpushxCommand,3,"wm",0,NULL,1,1,1,0,0},
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{"rpush",rpushCommand,-3,"wmF",0,NULL,1,1,1,0,0},
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{"lpush",lpushCommand,-3,"wmF",0,NULL,1,1,1,0,0},
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{"rpushx",rpushxCommand,3,"wmF",0,NULL,1,1,1,0,0},
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{"lpushx",lpushxCommand,3,"wmF",0,NULL,1,1,1,0,0},
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{"linsert",linsertCommand,5,"wm",0,NULL,1,1,1,0,0},
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{"rpop",rpopCommand,2,"w",0,NULL,1,1,1,0,0},
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{"lpop",lpopCommand,2,"w",0,NULL,1,1,1,0,0},
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{"rpop",rpopCommand,2,"wF",0,NULL,1,1,1,0,0},
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{"lpop",lpopCommand,2,"wF",0,NULL,1,1,1,0,0},
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{"brpop",brpopCommand,-3,"ws",0,NULL,1,1,1,0,0},
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{"brpoplpush",brpoplpushCommand,4,"wms",0,NULL,1,2,1,0,0},
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{"blpop",blpopCommand,-3,"ws",0,NULL,1,-2,1,0,0},
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{"llen",llenCommand,2,"r",0,NULL,1,1,1,0,0},
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{"llen",llenCommand,2,"rF",0,NULL,1,1,1,0,0},
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{"lindex",lindexCommand,3,"r",0,NULL,1,1,1,0,0},
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{"lset",lsetCommand,4,"wm",0,NULL,1,1,1,0,0},
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{"lrange",lrangeCommand,4,"r",0,NULL,1,1,1,0,0},
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{"ltrim",ltrimCommand,4,"w",0,NULL,1,1,1,0,0},
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{"lrem",lremCommand,4,"w",0,NULL,1,1,1,0,0},
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{"rpoplpush",rpoplpushCommand,3,"wm",0,NULL,1,2,1,0,0},
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{"sadd",saddCommand,-3,"wm",0,NULL,1,1,1,0,0},
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{"srem",sremCommand,-3,"w",0,NULL,1,1,1,0,0},
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{"smove",smoveCommand,4,"w",0,NULL,1,2,1,0,0},
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{"sismember",sismemberCommand,3,"r",0,NULL,1,1,1,0,0},
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{"scard",scardCommand,2,"r",0,NULL,1,1,1,0,0},
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{"spop",spopCommand,2,"wRs",0,NULL,1,1,1,0,0},
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{"sadd",saddCommand,-3,"wmF",0,NULL,1,1,1,0,0},
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{"srem",sremCommand,-3,"wF",0,NULL,1,1,1,0,0},
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{"smove",smoveCommand,4,"wF",0,NULL,1,2,1,0,0},
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{"sismember",sismemberCommand,3,"rF",0,NULL,1,1,1,0,0},
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{"scard",scardCommand,2,"rF",0,NULL,1,1,1,0,0},
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{"spop",spopCommand,2,"wRsF",0,NULL,1,1,1,0,0},
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{"srandmember",srandmemberCommand,-2,"rR",0,NULL,1,1,1,0,0},
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{"sinter",sinterCommand,-2,"rS",0,NULL,1,-1,1,0,0},
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{"sinterstore",sinterstoreCommand,-3,"wm",0,NULL,1,-1,1,0,0},
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@ -166,9 +170,9 @@ struct redisCommand redisCommandTable[] = {
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{"sdiffstore",sdiffstoreCommand,-3,"wm",0,NULL,1,-1,1,0,0},
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{"smembers",sinterCommand,2,"rS",0,NULL,1,1,1,0,0},
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{"sscan",sscanCommand,-3,"rR",0,NULL,1,1,1,0,0},
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{"zadd",zaddCommand,-4,"wm",0,NULL,1,1,1,0,0},
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{"zincrby",zincrbyCommand,4,"wm",0,NULL,1,1,1,0,0},
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{"zrem",zremCommand,-3,"w",0,NULL,1,1,1,0,0},
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{"zadd",zaddCommand,-4,"wmF",0,NULL,1,1,1,0,0},
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{"zincrby",zincrbyCommand,4,"wmF",0,NULL,1,1,1,0,0},
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{"zrem",zremCommand,-3,"wF",0,NULL,1,1,1,0,0},
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{"zremrangebyscore",zremrangebyscoreCommand,4,"w",0,NULL,1,1,1,0,0},
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{"zremrangebyrank",zremrangebyrankCommand,4,"w",0,NULL,1,1,1,0,0},
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{"zremrangebylex",zremrangebylexCommand,4,"w",0,NULL,1,1,1,0,0},
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@ -179,58 +183,58 @@ struct redisCommand redisCommandTable[] = {
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{"zrevrangebyscore",zrevrangebyscoreCommand,-4,"r",0,NULL,1,1,1,0,0},
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{"zrangebylex",zrangebylexCommand,-4,"r",0,NULL,1,1,1,0,0},
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{"zrevrangebylex",zrevrangebylexCommand,-4,"r",0,NULL,1,1,1,0,0},
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{"zcount",zcountCommand,4,"r",0,NULL,1,1,1,0,0},
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{"zlexcount",zlexcountCommand,4,"r",0,NULL,1,1,1,0,0},
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{"zcount",zcountCommand,4,"rF",0,NULL,1,1,1,0,0},
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{"zlexcount",zlexcountCommand,4,"rF",0,NULL,1,1,1,0,0},
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{"zrevrange",zrevrangeCommand,-4,"r",0,NULL,1,1,1,0,0},
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{"zcard",zcardCommand,2,"r",0,NULL,1,1,1,0,0},
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{"zscore",zscoreCommand,3,"r",0,NULL,1,1,1,0,0},
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{"zrank",zrankCommand,3,"r",0,NULL,1,1,1,0,0},
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{"zrevrank",zrevrankCommand,3,"r",0,NULL,1,1,1,0,0},
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{"zcard",zcardCommand,2,"rF",0,NULL,1,1,1,0,0},
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{"zscore",zscoreCommand,3,"rF",0,NULL,1,1,1,0,0},
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{"zrank",zrankCommand,3,"rF",0,NULL,1,1,1,0,0},
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{"zrevrank",zrevrankCommand,3,"rF",0,NULL,1,1,1,0,0},
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{"zscan",zscanCommand,-3,"rR",0,NULL,1,1,1,0,0},
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{"hset",hsetCommand,4,"wm",0,NULL,1,1,1,0,0},
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{"hsetnx",hsetnxCommand,4,"wm",0,NULL,1,1,1,0,0},
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{"hget",hgetCommand,3,"r",0,NULL,1,1,1,0,0},
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{"hset",hsetCommand,4,"wmF",0,NULL,1,1,1,0,0},
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{"hsetnx",hsetnxCommand,4,"wmF",0,NULL,1,1,1,0,0},
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{"hget",hgetCommand,3,"rF",0,NULL,1,1,1,0,0},
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{"hmset",hmsetCommand,-4,"wm",0,NULL,1,1,1,0,0},
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{"hmget",hmgetCommand,-3,"r",0,NULL,1,1,1,0,0},
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{"hincrby",hincrbyCommand,4,"wm",0,NULL,1,1,1,0,0},
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{"hincrbyfloat",hincrbyfloatCommand,4,"wm",0,NULL,1,1,1,0,0},
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{"hdel",hdelCommand,-3,"w",0,NULL,1,1,1,0,0},
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{"hlen",hlenCommand,2,"r",0,NULL,1,1,1,0,0},
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{"hincrby",hincrbyCommand,4,"wmF",0,NULL,1,1,1,0,0},
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{"hincrbyfloat",hincrbyfloatCommand,4,"wmF",0,NULL,1,1,1,0,0},
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{"hdel",hdelCommand,-3,"wF",0,NULL,1,1,1,0,0},
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{"hlen",hlenCommand,2,"rF",0,NULL,1,1,1,0,0},
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{"hkeys",hkeysCommand,2,"rS",0,NULL,1,1,1,0,0},
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{"hvals",hvalsCommand,2,"rS",0,NULL,1,1,1,0,0},
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{"hgetall",hgetallCommand,2,"r",0,NULL,1,1,1,0,0},
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{"hexists",hexistsCommand,3,"r",0,NULL,1,1,1,0,0},
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{"hexists",hexistsCommand,3,"rF",0,NULL,1,1,1,0,0},
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{"hscan",hscanCommand,-3,"rR",0,NULL,1,1,1,0,0},
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{"incrby",incrbyCommand,3,"wm",0,NULL,1,1,1,0,0},
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{"decrby",decrbyCommand,3,"wm",0,NULL,1,1,1,0,0},
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{"incrbyfloat",incrbyfloatCommand,3,"wm",0,NULL,1,1,1,0,0},
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{"incrby",incrbyCommand,3,"wmF",0,NULL,1,1,1,0,0},
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{"decrby",decrbyCommand,3,"wmF",0,NULL,1,1,1,0,0},
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{"incrbyfloat",incrbyfloatCommand,3,"wmF",0,NULL,1,1,1,0,0},
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{"getset",getsetCommand,3,"wm",0,NULL,1,1,1,0,0},
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{"mset",msetCommand,-3,"wm",0,NULL,1,-1,2,0,0},
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{"msetnx",msetnxCommand,-3,"wm",0,NULL,1,-1,2,0,0},
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{"randomkey",randomkeyCommand,1,"rR",0,NULL,0,0,0,0,0},
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{"select",selectCommand,2,"rl",0,NULL,0,0,0,0,0},
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{"move",moveCommand,3,"w",0,NULL,1,1,1,0,0},
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{"select",selectCommand,2,"rlF",0,NULL,0,0,0,0,0},
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{"move",moveCommand,3,"wF",0,NULL,1,1,1,0,0},
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{"rename",renameCommand,3,"w",0,NULL,1,2,1,0,0},
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{"renamenx",renamenxCommand,3,"w",0,NULL,1,2,1,0,0},
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{"expire",expireCommand,3,"w",0,NULL,1,1,1,0,0},
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{"expireat",expireatCommand,3,"w",0,NULL,1,1,1,0,0},
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{"pexpire",pexpireCommand,3,"w",0,NULL,1,1,1,0,0},
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{"pexpireat",pexpireatCommand,3,"w",0,NULL,1,1,1,0,0},
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{"renamenx",renamenxCommand,3,"wF",0,NULL,1,2,1,0,0},
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{"expire",expireCommand,3,"wF",0,NULL,1,1,1,0,0},
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{"expireat",expireatCommand,3,"wF",0,NULL,1,1,1,0,0},
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{"pexpire",pexpireCommand,3,"wF",0,NULL,1,1,1,0,0},
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{"pexpireat",pexpireatCommand,3,"wF",0,NULL,1,1,1,0,0},
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{"keys",keysCommand,2,"rS",0,NULL,0,0,0,0,0},
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{"scan",scanCommand,-2,"rR",0,NULL,0,0,0,0,0},
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{"dbsize",dbsizeCommand,1,"r",0,NULL,0,0,0,0,0},
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{"auth",authCommand,2,"rslt",0,NULL,0,0,0,0,0},
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{"ping",pingCommand,1,"rt",0,NULL,0,0,0,0,0},
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{"echo",echoCommand,2,"r",0,NULL,0,0,0,0,0},
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{"dbsize",dbsizeCommand,1,"rF",0,NULL,0,0,0,0,0},
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{"auth",authCommand,2,"rsltF",0,NULL,0,0,0,0,0},
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{"ping",pingCommand,1,"rtF",0,NULL,0,0,0,0,0},
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{"echo",echoCommand,2,"rF",0,NULL,0,0,0,0,0},
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{"save",saveCommand,1,"ars",0,NULL,0,0,0,0,0},
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{"bgsave",bgsaveCommand,1,"ar",0,NULL,0,0,0,0,0},
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{"bgrewriteaof",bgrewriteaofCommand,1,"ar",0,NULL,0,0,0,0,0},
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{"shutdown",shutdownCommand,-1,"arlt",0,NULL,0,0,0,0,0},
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{"lastsave",lastsaveCommand,1,"rR",0,NULL,0,0,0,0,0},
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{"type",typeCommand,2,"r",0,NULL,1,1,1,0,0},
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{"multi",multiCommand,1,"rs",0,NULL,0,0,0,0,0},
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{"lastsave",lastsaveCommand,1,"rRF",0,NULL,0,0,0,0,0},
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{"type",typeCommand,2,"rF",0,NULL,1,1,1,0,0},
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{"multi",multiCommand,1,"rsF",0,NULL,0,0,0,0,0},
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{"exec",execCommand,1,"sM",0,NULL,0,0,0,0,0},
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{"discard",discardCommand,1,"rs",0,NULL,0,0,0,0,0},
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{"discard",discardCommand,1,"rsF",0,NULL,0,0,0,0,0},
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{"sync",syncCommand,1,"ars",0,NULL,0,0,0,0,0},
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{"psync",syncCommand,3,"ars",0,NULL,0,0,0,0,0},
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{"replconf",replconfCommand,-1,"arslt",0,NULL,0,0,0,0,0},
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@ -239,9 +243,9 @@ struct redisCommand redisCommandTable[] = {
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{"sort",sortCommand,-2,"wm",0,sortGetKeys,1,1,1,0,0},
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{"info",infoCommand,-1,"rlt",0,NULL,0,0,0,0,0},
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{"monitor",monitorCommand,1,"ars",0,NULL,0,0,0,0,0},
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{"ttl",ttlCommand,2,"r",0,NULL,1,1,1,0,0},
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{"pttl",pttlCommand,2,"r",0,NULL,1,1,1,0,0},
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{"persist",persistCommand,2,"w",0,NULL,1,1,1,0,0},
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{"ttl",ttlCommand,2,"rF",0,NULL,1,1,1,0,0},
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{"pttl",pttlCommand,2,"rF",0,NULL,1,1,1,0,0},
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{"persist",persistCommand,2,"wF",0,NULL,1,1,1,0,0},
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{"slaveof",slaveofCommand,3,"ast",0,NULL,0,0,0,0,0},
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{"role",roleCommand,1,"last",0,NULL,0,0,0,0,0},
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{"debug",debugCommand,-2,"as",0,NULL,0,0,0,0,0},
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@ -250,17 +254,17 @@ struct redisCommand redisCommandTable[] = {
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{"unsubscribe",unsubscribeCommand,-1,"rpslt",0,NULL,0,0,0,0,0},
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{"psubscribe",psubscribeCommand,-2,"rpslt",0,NULL,0,0,0,0,0},
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{"punsubscribe",punsubscribeCommand,-1,"rpslt",0,NULL,0,0,0,0,0},
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{"publish",publishCommand,3,"pltr",0,NULL,0,0,0,0,0},
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{"publish",publishCommand,3,"pltrF",0,NULL,0,0,0,0,0},
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{"pubsub",pubsubCommand,-2,"pltrR",0,NULL,0,0,0,0,0},
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{"watch",watchCommand,-2,"rs",0,NULL,1,-1,1,0,0},
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{"unwatch",unwatchCommand,1,"rs",0,NULL,0,0,0,0,0},
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{"watch",watchCommand,-2,"rsF",0,NULL,1,-1,1,0,0},
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{"unwatch",unwatchCommand,1,"rsF",0,NULL,0,0,0,0,0},
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{"cluster",clusterCommand,-2,"ar",0,NULL,0,0,0,0,0},
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{"restore",restoreCommand,-4,"awm",0,NULL,1,1,1,0,0},
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{"restore-asking",restoreCommand,-4,"awmk",0,NULL,1,1,1,0,0},
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{"migrate",migrateCommand,-6,"aw",0,NULL,0,0,0,0,0},
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{"asking",askingCommand,1,"r",0,NULL,0,0,0,0,0},
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{"readonly",readonlyCommand,1,"r",0,NULL,0,0,0,0,0},
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{"readwrite",readwriteCommand,1,"r",0,NULL,0,0,0,0,0},
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{"readonly",readonlyCommand,1,"rF",0,NULL,0,0,0,0,0},
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{"readwrite",readwriteCommand,1,"rF",0,NULL,0,0,0,0,0},
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{"dump",dumpCommand,2,"ar",0,NULL,1,1,1,0,0},
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{"object",objectCommand,-2,"r",0,NULL,2,2,2,0,0},
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{"client",clientCommand,-2,"ar",0,NULL,0,0,0,0,0},
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@ -268,14 +272,14 @@ struct redisCommand redisCommandTable[] = {
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{"evalsha",evalShaCommand,-3,"s",0,evalGetKeys,0,0,0,0,0},
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{"slowlog",slowlogCommand,-2,"r",0,NULL,0,0,0,0,0},
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{"script",scriptCommand,-2,"ras",0,NULL,0,0,0,0,0},
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{"time",timeCommand,1,"rR",0,NULL,0,0,0,0,0},
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{"time",timeCommand,1,"rRF",0,NULL,0,0,0,0,0},
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{"bitop",bitopCommand,-4,"wm",0,NULL,2,-1,1,0,0},
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{"bitcount",bitcountCommand,-2,"r",0,NULL,1,1,1,0,0},
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{"bitpos",bitposCommand,-3,"r",0,NULL,1,1,1,0,0},
|
||||
{"wait",waitCommand,3,"rs",0,NULL,0,0,0,0,0},
|
||||
{"command",commandCommand,0,"rlt",0,NULL,0,0,0,0,0},
|
||||
{"pfselftest",pfselftestCommand,1,"r",0,NULL,0,0,0,0,0},
|
||||
{"pfadd",pfaddCommand,-2,"wm",0,NULL,1,1,1,0,0},
|
||||
{"pfadd",pfaddCommand,-2,"wmF",0,NULL,1,1,1,0,0},
|
||||
{"pfcount",pfcountCommand,-2,"w",0,NULL,1,1,1,0,0},
|
||||
{"pfmerge",pfmergeCommand,-2,"wm",0,NULL,1,-1,1,0,0},
|
||||
{"pfdebug",pfdebugCommand,-3,"w",0,NULL,0,0,0,0,0}
|
||||
@ -1853,6 +1857,7 @@ void populateCommandTable(void) {
|
||||
case 't': c->flags |= REDIS_CMD_STALE; break;
|
||||
case 'M': c->flags |= REDIS_CMD_SKIP_MONITOR; break;
|
||||
case 'k': c->flags |= REDIS_CMD_ASKING; break;
|
||||
case 'F': c->flags |= REDIS_CMD_FAST; break;
|
||||
default: redisPanic("Unsupported command flag"); break;
|
||||
}
|
||||
f++;
|
||||
@ -2017,8 +2022,12 @@ void call(redisClient *c, int flags) {
|
||||
|
||||
/* Log the command into the Slow log if needed, and populate the
|
||||
* per-command statistics that we show in INFO commandstats. */
|
||||
if (flags & REDIS_CALL_SLOWLOG && c->cmd->proc != execCommand)
|
||||
if (flags & REDIS_CALL_SLOWLOG && c->cmd->proc != execCommand) {
|
||||
char *latency_event = (c->cmd->flags & REDIS_CMD_FAST) ?
|
||||
"fast-command" : "command";
|
||||
latencyAddSampleIfNeeded(latency_event,duration);
|
||||
slowlogPushEntryIfNeeded(c->argv,c->argc,duration);
|
||||
}
|
||||
if (flags & REDIS_CALL_STATS) {
|
||||
c->cmd->microseconds += duration;
|
||||
c->cmd->calls++;
|
||||
@ -2440,6 +2449,7 @@ void addReplyCommand(redisClient *c, struct redisCommand *cmd) {
|
||||
flagcount += addReplyCommandFlag(c,cmd,REDIS_CMD_STALE, "stale");
|
||||
flagcount += addReplyCommandFlag(c,cmd,REDIS_CMD_SKIP_MONITOR, "skip_monitor");
|
||||
flagcount += addReplyCommandFlag(c,cmd,REDIS_CMD_ASKING, "asking");
|
||||
flagcount += addReplyCommandFlag(c,cmd,REDIS_CMD_FAST, "fast");
|
||||
if (cmd->getkeys_proc) {
|
||||
addReplyStatus(c, "movablekeys");
|
||||
flagcount += 1;
|
||||
|
||||
@ -166,6 +166,7 @@ typedef long long mstime_t; /* millisecond time type. */
|
||||
#define REDIS_CMD_STALE 1024 /* "t" flag */
|
||||
#define REDIS_CMD_SKIP_MONITOR 2048 /* "M" flag */
|
||||
#define REDIS_CMD_ASKING 4096 /* "k" flag */
|
||||
#define REDIS_CMD_FAST 8192 /* "F" flag */
|
||||
|
||||
/* Object types */
|
||||
#define REDIS_STRING 0
|
||||
|
||||
Loading…
Reference in New Issue
Block a user