Use the stats command to monitor memcached

Use the stats command to monitor memcached

Of course, it is also very convenient to use telnet to monitor memcached

telnet lcaohost:11211

I prefer to use the stats command to monitor memcached

echo "stats"|nc 127.0.0.1 11211

Shows as follows

STAT pid 758
STAT uptime 35017
STAT time 1653439473
STAT version 1.6.12
STAT libevent 2.1.12-stable
STAT pointer_size 64
STAT rusage_user 6.048980
STAT rusage_system 4.258726
STAT max_connections 1024
STAT curr_connections 1
STAT total_connections 84
STAT rejected_connections 0
STAT connection_structures 2
STAT response_obj_oom 0
STAT response_obj_count 1
STAT response_obj_bytes 65536
STAT read_buf_count 8
STAT read_buf_bytes 131072
STAT read_buf_bytes_free 49152
STAT read_buf_oom 0
STAT reserved_fds 20
STAT cmd_get 561
STAT cmd_set 180
STAT cmd_flush 14
STAT cmd_touch 0
STAT cmd_meta 0
STAT get_hits 383
STAT get_misses 178
STAT get_expired 0
STAT get_flushed 97
STAT delete_misses 2
STAT delete_hits 8
STAT incr_misses 0
STAT incr_hits 0
STAT decr_misses 0
STAT decr_hits 0
STAT cas_misses 0
STAT cas_hits 0
STAT cas_badval 0
STAT touch_hits 0
STAT touch_misses 0
STAT auth_cmds 0
STAT auth_errors 0
STAT bytes_read 367426
STAT bytes_written 820192
STAT limit_maxbytes 67108864
STAT accepting_conns 1
STAT listen_disabled_num 0
STAT time_in_listen_disabled_us 0
STAT threads 4
STAT conn_yields 0
STAT hash_power_level 16
STAT hash_bytes 524288
STAT hash_is_expanding 0
STAT slab_reassign_rescues 0
STAT slab_reassign_chunk_rescues 0
STAT slab_reassign_evictions_nomem 0
STAT slab_reassign_inline_reclaim 0
STAT slab_reassign_busy_items 0
STAT slab_reassign_busy_deletes 0
STAT slab_reassign_running 0
STAT slabs_moved 0
STAT lru_crawler_running 0
STAT lru_crawler_starts 34
STAT lru_maintainer_juggles 274387
STAT malloc_fails 0
STAT log_worker_dropped 0
STAT log_worker_written 0
STAT log_watcher_skipped 0
STAT log_watcher_sent 0
STAT log_watchers 0
STAT unexpected_napi_ids 0
STAT round_robin_fallback 0
STAT bytes 0
STAT curr_items 0
STAT total_items 180
STAT slab_global_page_pool 0
STAT expired_unfetched 21
STAT evicted_unfetched 0
STAT evicted_active 0
STAT evictions 0
STAT reclaimed 62
STAT crawler_reclaimed 0
STAT crawler_items_checked 389
STAT lrutail_reflocked 15
STAT moves_to_cold 250
STAT moves_to_warm 122
STAT moves_within_lru 80
STAT direct_reclaims 0
STAT lru_bumps_dropped 0

The following is an introduction to the corresponding memcached status information

• pid : memcache server process ID
• uptime : the number of seconds the server has been running
• time : the current Unix timestamp of the server
• version : memcache version
• pointer_size : OS pointer size
• rusage_user : cumulative user time of the process
• rusage_system : cumulative system time of the process
• curr_connections : the current number of connections
• total_connections : The total number of connections since Memcached was running
• connection_structures : The number of connection structures allocated by Memcached
• cmd_get : the number of get command requests
• cmd_set : the number of set command requests
• cmd_flush : the number of flush command requests
• get_hits : the number of hits of the get command
• get_misses : Number of get command misses
• delete_misses : number of misses for delete command
• delete_hits : Number of hits of delete command
• incr_misses : the number of incr command misses
• incr_hits : the number of hits of the incr command
• decr_misses : The number of misses of the decr command
• decr_hits : The number of hits of the decr command
• cas_misses : Number of cas command misses
• cas_hits : The number of hits of the cas command
• cas_badval : number of wipes used
• auth_cmds : The number of authentication commands processed
• auth_errors : number of authentication failures
• bytes_read : total bytes read
• bytes_written : total bytes sent
• limit_maxbytes : total size of allocated memory (bytes)
• accepting_conns : Whether the server has reached the maximum connection (0/1)
• listen_disabled_num : Number of disabled listeners
• threads : the current number of threads
• conn_yields : The number of actively giving up connection operations
• bytes : the number of bytes currently occupied by the storage
• curr_items : the total number of data currently stored
• total_items : total data stored since startup
• evictions : the number of objects released by the LRU
• reclaimed : Number of expired data entries to store new data