灌溉梦想,记录脚步
« »
2009 年 08 月 16 日技术合集

如何监控MemCached的状态

使用MemCached以后,肯定希望知道cache的效果,对于MemCached的一些运行状态进行监控是必要的。MemCached也提供了stats接口输出一些信息,最简单的方式,就是telnet上去输入stats查看:

telnet 127.0.0.1 11211
Trying 127.0.0.1 ...
Connected to memcache_test_host (127.0.0.1 ).
Escape character is '^]'.
stats
STAT pid 7186
STAT uptime 1695
STAT time 1238401344
STAT version 1.2.6
STAT pointer_size 64
STAT rusage_user 0.003999
STAT rusage_system 0.002999
STAT curr_items 1
STAT total_items 54
STAT bytes 135
STAT curr_connections 2
STAT total_connections 111
STAT connection_structures 4
STAT cmd_get 3
STAT cmd_set 54
STAT get_hits 0
STAT get_misses 3
STAT evictions 0
STAT bytes_read 5957
STAT bytes_written 50914
STAT limit_maxbytes 2147483648
STAT threads 1
END

这种方式相当的不方便,所以网上就有各种不同客户端接口写的工具,比如用perl写的这个memcache-tool

./memcached_tool
Usage: memcached-tool  [mode]

       memcached-tool 10.0.0.5:11211 display    # shows slabs
       memcached-tool 10.0.0.5:11211            # same.  (default is display)
       memcached-tool 10.0.0.5:11211 stats      # shows general stats
       memcached-tool 10.0.0.5:11211 move 7 9   # takes 1MB slab from class #7
                                                # to class #9.

You can only move slabs around once memory is totally allocated, and only
once the target class is full.  (So you can't move from #6 to #9 and #7
to #9 at the same itme, since you'd have to wait for #9 to fill from
the first reassigned page)

$ ./memcached_tool 127.0.0.1:11211 stats
  #127.0.0.1:11211 Field       Value
                   bytes         135
              bytes_read        5964
           bytes_written       51394
                 cmd_get           3
                 cmd_set          54
   connection_structures           4
        curr_connections           3
              curr_items           1
               evictions           0
                get_hits           0
              get_misses           3
          limit_maxbytes  2147483648
                     pid        7186
            pointer_size          64
           rusage_system    0.002999
             rusage_user    0.003999
                 threads           1
                    time  1238401521
       total_connections         112
             total_items          54
                  uptime        1872
                 version       1.2.6

命令行的方式,在批处理调用的时候比较方便。但是在展现方面还是web方式更加直观有效,所以就有了php写的memcache.php,是的,用一次就知道这是我想要的。
 

日志信息 »

该日志于2009-08-16 18:16由 admin 发表在技术合集分类下, 你可以发表评论。除了可以将这个日志以保留源地址及作者的情况下引用到你的网站或博客,还可以通过RSS 2.0订阅这个日志的所有评论。

2条评论

发表评论 »