redis 内存分析

[shenkonghui]

查看容器使用内存1.6G

NAME                                                CPU(cores)   MEMORY(bytes)
redis-s-redis-single-6d9fcf76d9-bkv9h               4m           1624Mi

实际在pod中top查看内存使用了1个G，即设置的redis maxmemory参数

top - 16:22:12 up 7 days,  1:11,  0 users,  load average: 6.37, 5.83, 6.05
Tasks:   7 total,   1 running,   6 sleeping,   0 stopped,   0 zombie
%Cpu(s): 40.6 us, 26.4 sy,  0.0 ni, 30.2 id,  0.2 wa,  0.0 hi,  2.6 si,  0.0 st
MiB Mem :  11854.8 total,    228.5 free,   5948.5 used,   5677.7 buff/cache
MiB Swap:      0.0 total,      0.0 free,      0.0 used.   4866.9 avail Mem

   PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND
     1 root      20   0 1246092   1.0g   1840 S   0.0   8.7   1:55.58 redis-server

回收pagecache后

echo 1 > /proc/sys/vm/drop_caches

NAME                                                CPU(cores)   MEMORY(bytes)
redis-s-redis-single-6d9fcf76d9-bkv9h               4m           1036Mi