Returns timestamp-latency samples for an event.
LATENCY
HISTORY
event
The LATENCY HISTORY
command returns the raw data of the
event
’s latency spikes time series.
This is useful to an application that wants to fetch raw data in order to perform monitoring, display graphs, and so forth.
The command will return up to 160 timestamp-latency pairs for the
event
.
Valid values for event
are: *
active-defrag-cycle
* aof-fsync-always
*
aof-stat
* aof-rewrite-diff-write
*
aof-rename
* aof-write
*
aof-write-active-child
* aof-write-alone
*
aof-write-pending-fsync
* command
*
expire-cycle
* eviction-cycle
*
eviction-del
* fast-command
*
fork
* rdb-unlink-temp-file
Array reply: an array where each element is a two elements array representing the timestamp and the latency of the event.
O(1)
@admin @dangerous @slow
127.0.0.1:6379> latency history command
1) 1) (integer) 1405067822
2) (integer) 251
2) 1) (integer) 1405067941
2) (integer) 1001
For more information refer to the Latency Monitoring Framework page.
ACL, ACL CAT, ACL DELUSER, ACL DRYRUN, ACL GENPASS, ACL GETUSER, ACL HELP, ACL LIST, ACL LOAD, ACL LOG, ACL SAVE, ACL SETUSER, ACL USERS, ACL WHOAMI, BGREWRITEAOF, BGSAVE, COMMAND, COMMAND COUNT, COMMAND DOCS, COMMAND GETKEYS, COMMAND GETKEYSANDFLAGS, COMMAND HELP, COMMAND INFO, COMMAND LIST, CONFIG, CONFIG GET, CONFIG HELP, CONFIG RESETSTAT, CONFIG REWRITE, CONFIG SET, DBSIZE, DEBUG, FAILOVER, FLUSHALL, FLUSHDB, INFO, LASTSAVE, LATENCY, LATENCY DOCTOR, LATENCY GRAPH, LATENCY HELP, LATENCY HISTOGRAM, LATENCY LATEST, LATENCY RESET, LOLWUT, MEMORY, MEMORY DOCTOR, MEMORY HELP, MEMORY MALLOC-STATS, MEMORY PURGE, MEMORY STATS, MEMORY USAGE, MODULE, MODULE HELP, MODULE LIST, MODULE LOAD, MODULE LOADEX, MODULE UNLOAD, MONITOR, PSYNC, REPLCONF, REPLICAOF, RESTORE-ASKING, ROLE, SAVE, SHUTDOWN, SLOWLOG, SLOWLOG GET, SLOWLOG HELP, SLOWLOG LEN, SLOWLOG RESET, SWAPDB, SYNC, TIME.