Memcached常用命令(二)
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1.统计命令stats
格式:
stats [<args>]\r\n
STAT <name> <value>\r\n
END\r\n
stats [<args>]\r\n
STAT <name> <value>\r\n
END\r\n
- stats
- STAT pid 1014 //Memcache进程ID
- STAT uptime 8122 //Memcached运行时间,单位:秒
- STAT time 1357359669 //Memcached当前的UNIX时间
- STAT version 1.4.7 //Memcached的版本号
- STAT libevent 2.0.19-stable
- STAT pointer_size 64
- STAT rusage_user 0.144009 //该进程累计的用户时间,单位:秒
- STAT rusage_system 0.064004 //该进程累计的系统时间,单位:秒
- STAT curr_connections 10 //当前连接数量
- STAT total_connections 34 //Memcached运行以来接受的连接总数
- STAT connection_structures 11 //Memcached分配的连接结构的数量
- STAT cmd_get 64 //查询请求总数
- STAT cmd_set 10 //存储(添加/更新)请求总数
- STAT cmd_flush 0 //flush请求总数
- STAT get_hits 60 //查询成功获取数据的总次数
- STAT get_misses 4 //查询成功未获取到数据的总次数
- 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 auth_cmds 0
- STAT auth_errors 0
- STAT bytes_read 10753 //Memcached从网络读取到的总字节数
- STAT bytes_written 227141 //Memcached向网络发送的总字节数
- STAT limit_maxbytes 67108864 //Memcached在存储时被允许使用的字节总数
- STAT accepting_conns 1
- STAT listen_disabled_num 0
- STAT threads 4
- STAT conn_yields 0
- STAT bytes 8416 //Memcached当前存储内容所占用字节数
- STAT curr_items 4 //Memcached当前存储的内容数量
- STAT total_items 7 //Memcached启动以来存储过的内容总数
- STAT evictions 0 //LRU释放对象数,用来释放内存
- STAT reclaimed 0
- END
2.stats settings 查看设置
- stats settings
- STAT maxbytes 67108864
- STAT maxconns 1024
- STAT tcpport 11211
- STAT udpport 11211
- STAT inter NULL
- STAT verbosity 0
- STAT oldest 0
- STAT evictions on
- STAT domain_socket NULL
- STAT umask 700
- STAT growth_factor 1.25
- STAT chunk_size 48
- STAT num_threads 4
- STAT num_threads_per_udp 4
- STAT stat_key_prefix :
- STAT detail_enabled no
- STAT reqs_per_event 20
- STAT cas_enabled yes
- STAT tcp_backlog 1024
- STAT binding_protocol auto-negotiate
- STAT auth_enabled_sasl no
- STAT item_size_max 1048576
- END
3.stats items 数据项统计
- stats items
- STAT items:1:number 2
- STAT items:1:age 7145
- STAT items:1:evicted 0
- STAT items:1:evicted_nonzero 0
- STAT items:1:evicted_time 0
- STAT items:1:outofmemory 0
- STAT items:1:tailrepairs 0
- STAT items:1:reclaimed 0
- STAT items:17:number 1
- STAT items:17:age 1006
- STAT items:17:evicted 0
- STAT items:17:evicted_nonzero 0
- STAT items:17:evicted_time 0
- STAT items:17:outofmemory 0
- STAT items:17:tailrepairs 0
- STAT items:17:reclaimed 0
- STAT items:19:number 1
- STAT items:19:age 1010
- STAT items:19:evicted 0
- STAT items:19:evicted_nonzero 0
- STAT items:19:evicted_time 0
- STAT items:19:outofmemory 0
- STAT items:19:tailrepairs 0
- STAT items:19:reclaimed 0
- END
4.stats sizes 数据项统计
- stats sizes
- STAT 96 2
- STAT 3328 1
- STAT 4960 1
- END
注意:会锁定服务,暂停处理请求
5.stats slabs 数据项统计
- stats slabs
- STAT 1:chunk_size 96
- STAT 1:chunks_per_page 10922
- STAT 1:total_pages 1
- STAT 1:total_chunks 10922
- STAT 1:used_chunks 2
- STAT 1:free_chunks 1
- STAT 1:free_chunks_end 10919
- STAT 1:mem_requested 149
- STAT 1:get_hits 8
- STAT 1:cmd_set 8
- STAT 1:delete_hits 0
- STAT 1:incr_hits 0
- STAT 1:decr_hits 0
- STAT 1:cas_hits 0
- STAT 1:cas_badval 0
- STAT 17:chunk_size 3632
- STAT 17:chunks_per_page 288
- STAT 17:total_pages 1
- STAT 17:total_chunks 288
- STAT 17:used_chunks 1
- STAT 17:free_chunks 0
- STAT 17:free_chunks_end 287
- STAT 17:mem_requested 3311
- STAT 17:get_hits 18
- STAT 17:cmd_set 1
- STAT 17:delete_hits 0
- STAT 17:incr_hits 0
- STAT 17:decr_hits 0
- STAT 17:cas_hits 0
- STAT 17:cas_badval 0
- STAT 19:chunk_size 5680
- STAT 19:chunks_per_page 184
- STAT 19:total_pages 1
- STAT 19:total_chunks 184
- STAT 19:used_chunks 1
- STAT 19:free_chunks 0
- STAT 19:free_chunks_end 183
- STAT 19:mem_requested 4956
- STAT 19:get_hits 34
- STAT 19:cmd_set 1
- STAT 19:delete_hits 0
- STAT 19:incr_hits 0
- STAT 19:decr_hits 0
- STAT 19:cas_hits 0
- STAT 19:cas_badval 0
- STAT active_slabs 3
- STAT total_malloced 3139648
- END
如果太大,需要调整factor
6.其它命令
-version
-flush_all
-quit
-echo|nc 快捷方式
- version
- VERSION 1.4.7
- flush_all
- OK
- quit
- Connection closed by foreign host.
- echo flush_all | nc localhost 11211
- OK
- echo get liu | nc localhost 11210
- VALUE liu 32 4
- java
- END
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