Memcached stats命令

2021-07-05 10:14:29 浏览数 (1)

Memcached stats命令

Memcached stats命令用于返回统计信息例如PID(进程号)、版本号、连接数等。

语法:

stats 命令的基本语法格式如下:

stats

实例

在以下实例中,我们使用了stats命令来输出 Memcached 服务信息。

[root@localhost ~]# telnet 127.0.0.1 11211

Trying 127.0.0.1...

Connected to 127.0.0.1.

Escape character is '^]'.

stats

STAT pid 3446

STAT uptime 2075

STAT time 1589185990

STAT version 1.6.5

STAT libevent 2.0.21-stable

STAT pointer_size 64

STAT rusage_user 0.194141

STAT rusage_system 0.112501

STAT max_connections 1024

STAT curr_connections 2

STAT total_connections 7

STAT rejected_connections 0

STAT connection_structures 3

STAT response_obj_bytes 4672

STAT response_obj_total 4

STAT response_obj_free 3

STAT response_obj_oom 0

STAT read_buf_bytes 65536

STAT read_buf_bytes_free 49152

STAT read_buf_oom 0

STAT reserved_fds 20

STAT cmd_get 5

STAT cmd_set 5

STAT cmd_flush 0

STAT cmd_touch 0

STAT cmd_meta 0

STAT get_hits 4

STAT get_misses 1

STAT get_expired 0

STAT get_flushed 0

STAT delete_misses 0

STAT delete_hits 0

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 cas_badval 0

STAT touch_hits 0

STAT touch_misses 0

STAT auth_cmds 0

STAT auth_errors 0

STAT bytes_read 231

STAT bytes_written 2318

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 2041

STAT lru_maintainer_juggles 4138

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 bytes 65

STAT curr_items 1

STAT total_items 4

STAT slab_global_page_pool 0

STAT expired_unfetched 0

STAT evicted_unfetched 0

STAT evicted_active 0

STAT evictions 0

STAT reclaimed 0

STAT crawler_reclaimed 1

STAT crawler_items_checked 15

STAT lrutail_reflocked 0

STAT moves_to_cold 4

STAT moves_to_warm 0

STAT moves_within_lru 0

STAT direct_reclaims 0

STAT lru_bumps_dropped 0

END

这里显示了很多状态信息,下边详细解释每个状态项:

pid: memcache服务器进程ID

uptime:服务器已运行秒数

time:服务器当前Unix时间戳

version:memcache版本

pointer_size:操作系统指针大小

rusage_user:进程累计用户时间

rusage_system:进程累计系统时间

curr_connections:当前连接数量

total_connections:Memcached运行以来连接总数

connection_structures:Memcached分配的连接结构数量

cmd_get:get命令请求次数

cmd_set:set命令请求次数

cmd_flush:flush命令请求次数

get_hits:get命令命中次数

get_misses:get命令未命中次数

delete_misses:delete命令未命中次数

delete_hits:delete命令命中次数

incr_misses:incr命令未命中次数

incr_hits:incr命令命中次数

decr_misses:decr命令未命中次数

decr_hits:decr命令命中次数

cas_misses:cas命令未命中次数

cas_hits:cas命令命中次数

cas_badval:使用擦拭次数

auth_cmds:认证命令处理的次数

auth_errors:认证失败数目

bytes_read:读取总字节数

bytes_written:发送总字节数

limit_maxbytes:分配的内存总大小(字节)

accepting_conns:服务器是否达到过最大连接(0/1)

listen_disabled_num:失效的监听数

threads:当前线程数

conn_yields:连接操作主动放弃数目

bytes:当前存储占用的字节数

curr_items:当前存储的数据总数

total_items:启动以来存储的数据总数

evictions:LRU释放的对象数目

reclaimed:已过期的数据条目来存储新数据的数目

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