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我有一个安装在我想在我的生产环境中使用的memcache，但是当我运行了一些测试时，似乎memcache并没有释放内存，即使它已经用完了所有它分配了内存，同时我登录并运行了flush_all命令，但对象仍在缓存中。 这里是输出来自一些测试Memcached使用超过最大内存
memcached-tool
memcache-top v0.6 (default port: 11211, color: on, refresh: 3 seconds)
INSTANCE USAGE HIT % CONN TIME EVICT/s READ/s WRITE/s
127.0.0.1:11211 427.1% 0.0% 18 1.4ms 0.0 244 261.0K
AVERAGE: 427.1% 0.0% 18 1.4ms 0.0 244 261.0K
TOTAL: 4.3MB/ 1.0MB 18 1.4ms 0.0 244 261.0K
memcached-tool 127.0.0.1:11211 display
No Item_Size Max_age Pages Count Full? Evicted Evict_Time OOM
1 560B 4s 1 1872 yes 0 0 15488
2 704B 32s 1 559 no 0 0 0
3 880B 4s 1 1191 yes 0 0 1335
4 1.1K 9s 1 116 no 0 0 0
5 1.4K 21s 1 14 no 0 0 0
6 1.7K 4s 1 17 no 0 0 0
7 2.1K 84s 1 24 no 0 0 0
8 2.7K 130s 1 60 no 0 0 0
9 3.3K 25s 1 290 no 0 0 0
10 4.2K 9s 1 194 no 0 0 0
11 5.2K 9s 1 116 no 0 0 0
15 12.7K 816s 1 1 no 0 0 0
16 15.9K 769s 1 5 no 0 0 0
18 24.8K 786s 1 1 no 0 0 0
21 48.5K 816s 1 1 no 0 0 0
memcached的工具127.0.0.1:11211统计
127.0.0.1:11211 Field Value
accepting_conns 1
auth_cmds 0
auth_errors 0
bytes 4478060
bytes_read 23964596
bytes_written 546642860
cas_badval 0
cas_hits 0
cas_misses 0
cmd_flush 0
cmd_get 240894
cmd_set 4504
conn_yields 0
connection_structures 21
curr_connections 18
curr_items 4461
decr_hits 0
decr_misses 0
delete_hits 0
delete_misses 0
evictions 0
get_hits 43756
get_misses 197138
incr_hits 0
incr_misses 0
limit_maxbytes 1048576
listen_disabled_num 0
pid 8731
pointer_size 64
reclaimed 0
rusage_system 5.047232
rusage_user 4.311344
threads 4
time 1306247929
total_connections 3092
total_items 4504
uptime 1240
version 1.4.5