Category | Event | Threshold | Description |
Memory eviction | EvictionDel | 30 ms | The amount of time required to delete evicted keys in a specific eviction cycle. |
EvictionLazyFree | 30 ms | The amount of time that background threads take to release the memory in a specific eviction cycle. |
EvictionCycle | 30 ms | The amount of time required to perform an eviction. An eviction cycle involves the time required to select and delete data that you want to evict and the time spent on waiting for background threads. |
Memory defragmentation | ActiveDefragCycle | 100 ms | The amount of time required to defragment memory. |
Rehash | Rehash | 100 ms | The amount of time required to perform a rehash. |
Data structure upgrade | ZipListConvertHash | 30 ms | The amount of time required to convert a ziplist to a dictionary by means of hash encoding. |
IntsetConvertSet | 30 ms | The amount of time required to convert an intset to a set by means of set encoding. |
ZipListConvertZset | 30 ms | The amount of time required to convert a ziplist to a skiplist by means of ziplist encoding. |
Append-only file (AOF) | AofWriteAlone | 30 ms | The amount of time required to write an AOF as expected. |
AofWrite | 30 ms | The amount of time required to write an AOF. Each time an AOF is successfully written, an AofWrite event and one of the following three events are recorded: AofWriteAlone, AofWriteActiveChild, and AofWritePendingFsync. |
AofFstat | 30 ms | The amount of time required to obtain the information about an AOF. |
AofRename | 30 ms | The amount of time required to rename an AOF. |
AofReWriteDiffWrite | 30 ms | The amount of time consumed by an incremental AOF write performed by a parent process after its child process rewrites an AOF. |
AofWriteActiveChild | 30 ms | The amount of time required to write an AOF to a disk. Other child processes may write data to the disk when the AOF is written. |
AofWritePendingFsync | 30 ms | The amount of time required to write an AOF. A background process may be performing a fsync operation when the AOF is written. |
Redis database (RDB) file | RdbUnlinkTempFile | 50 ms | The amount of time required to delete a temporary RDB file after a bgsave child process is terminated. |
Others | Commands | 30 ms | The amount of time required to run a command that is not tagged with fast. |
FastCommand | 30 ms | The amount of time required to run a command that is tagged with fast and has the time complexity of O(1) or O(log N). For more information about such commands, see the FastCommands section of this topic. |
EventLoop | 50 ms | The amount of time required to run a main event loop. |
Fork | 100 ms | The amount of time required to call a fork operation. |
Transaction | 50 ms | The actual amount of time consumed by a transaction. |
PipeLine | 50 ms | The amount of time consumed by a multi-threaded pipeline. |
ExpireCycle | 30 ms | The amount of time required to clear expired keys at a time. |
ExpireDel | 30 ms | The amount of time required to delete expired keys in a specific cycle for clearing the keys. |
SlotRdbsUnlinkTempFile | 30 ms | The amount of time required to delete a temporary RDB file from a slot after a bgsave child process is terminated. |
LoadSlotRdb | 100 ms | The amount of time required to load an RDB file from a slot. |
SlotreplTargetcron | 50 ms | The amount of time required to load an RDB file from a slot to a temporary database and then migrate the file to a destination database by using a child process. |
Elastic Compute Service (ECS)
Container Compute Service (ACS)
icon to view finer-grained statistics, including the numbers of occurrences of the events whose latency is lower than 1 μs, 2 μs, 4 μs, 8 μs, 16 μs, 32 μs, 64 μs, 128 μs, 256 μs, 512 μs, and 1 ms. 
