LATENCY HISTORY event

Available since 2.8.13.

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

  1. 127.0.0.1:6379> latency history command
  2. 1) 1) (integer) 1405067822
  3.    2) (integer) 251
  4. 2) 1) (integer) 1405067941
  5.    2) (integer) 1001

For more information refer to the Latency Monitoring Framework page.

*Return value

Array reply: specifically:

The command returns an array where each element is a two elements array representing the timestamp and the latency of the event.