我其实期待缓慢的响应时间上memcached的某些请求。 我运行一个服务器的NodeJS，客户端节点的memcached。 从日志文件中，我提取的响应时间分布，看起来像这样：
Count Response time (ms)
6204 00001
4627 00002
1465 00003
414 00004
141 00005
69 00006
23 00007
17 00008
11 00009
2 00010
2 00011
2 00012
1 00015
1 00016
1 00020
1 00023
1 00024
1 00026
1 00076
1 00212
1 00213
1 00214
1 00215
1 00217
1 00219
1 00220
1 03004
1 03010
什么是真正奇怪的是，这些异常请求，这消耗大约215和3000毫秒。 存储对象基本上是相同的，memcached的版本是1.4.5。 下面是来自（8）的一台服务器的统计数据：
STAT pid 2359
STAT uptime 12131402
STAT time 1355303458
STAT version 1.4.5
STAT pointer_size 64
STAT rusage_user 161954.749539
STAT rusage_system 423668.017596
STAT curr_connections 930
STAT total_connections 12097997
STAT connection_structures 1254
STAT cmd_get 46838365743
STAT cmd_set 1560759291
STAT cmd_flush 0
STAT get_hits 40796019120
STAT get_misses 6042346623
STAT delete_misses 237357218
STAT delete_hits 49942676
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 4178933811835
STAT bytes_written 64248216431317
STAT limit_maxbytes 24062722048
STAT accepting_conns 1
STAT listen_disabled_num 0
STAT threads 8
STAT conn_yields 3956
STAT bytes 21362090264
STAT curr_items 14583102
STAT total_items 1560759290
STAT evictions 712640376
STAT reclaimed 131709403
