1 . FQA
http://home.cnblogs.com/group/topic/37133.html
http://www.cnblogs.com/caipuke/archive/2010/05/07/1729667.html
3. 参数说明
pid Process id of this server process (memcache服务器的进程ID)
uptime Number of seconds this server has been running (服务器已经运行的秒数)
time Current UNIX time according to the server (服务器当前的UNIX时间)
version Version string of this server (memcache版本)
pointer_size Current system pointer 当前操作系统的指针大小(32位系统一般是32bit)
rusage_user Accumulated user time for this process (该进程累计的用户时间(秒:微妙))
rusage_system Accumulated system time for this process (该进程累计的系统时间(秒:微妙))
curr_items Current number of items stored by the server (服务器当前存储的内容数量)
total_items Total number of items stored by this server ever since it started (服务器启动以来存储过的内容总数)
bytes Current number of bytes used by this server to store items (服务器当前存储内容所占用的字节数)
curr_connections Number of open connections (当前打开着的连接数量)
total_connections Total number of connections opened since the server started running (服务器运行以来接受的连接总数)
connection_structures Number of connection structures allocated by the server (服务器分配的连接结构的数量)
cmd_get Cumulative number of retrieval requests (get命令(获取)总请求次数)
cmd_set Cumulative number of storage requests (set命令(保存)总请求次数)
get_hits Number of keys that have been requested and found present (请求成功的总次数)
get_misses Number of items that have been requested and not found (请求失败的总次数)
threads Current number of thread (当前线程数)
bytes_read Total number of bytes read by this server from network (服务器从网络读取到的总字节数)
bytes_written Total number of bytes sent by this server to network (服务器向网络发送的总字节数)
limit_maxbytes Number of bytes this server is allowed to use for storage. (服务器在存储时被允许使用的字节总数)
evictions Number of valid items removed from cache to free memory for new items (为获取空闲内存而删除的items数(分配给memcache的空间用满后需要删除旧的items来得到空间分配给新的items))
其中,最关注最多的几个参数:
uptime:是memcached运行的秒数。
cmd_get:是查询缓存的次数。
cmd_get/uptime 结果是平均每秒请求缓存的次数——结果值越大,说明Memcached的利用率越高,站点的访问量大,如果太低,用文件系统缓存就可以了,根本不会体现出使用memcached的强大性能。
cmd_set:是设置key=>value的次数。整个memcached是个大hash,用cmd_get没有找到的内容,就会调用一下cmd_set写进缓存里。
get_hits:是缓存命中的次数。所谓的命中率 = get_hits/cmd_get * 100%。
get_misses:是缓存未命中的次数。get_misses加上get_hits就等于cmd_get。
stats:显示服务器信息、统计数据等
stats reset:清空统计数据
stats slabs:显示各个slab的信息,包括chunk的大小、数目、使用情况等
stats items:显示各个slab中item的数目和存储时长(最后一次访问距离现在的秒数)
quit:退出
本文来自CSDN博客,转载请标明出处:http://blog.csdn.net/ctowoo/archive/2009/10/14/4672649.aspx
http://www.cnblogs.com/netflu/archive/2010/03/12/1684308.html
来源:https://www.cnblogs.com/yuanhuaming/archive/2010/07/23/1783551.html