我的os是arch linux 64位.
free -m结果如下
total used free shared buffers cached
Mem: 32172 31909 262 0 119 13054
-/+ buffers/cache: 18735 13436
Swap: 258 258 0
ulimit -a core file size (blocks, -c) unlimited data seg size (kbytes, -d) unlimited scheduling priority (-e) 20 file size (blocks, -f) unlimited pending signals (-i) 257329 max locked memory (kbytes, -l) 64 max memory size (kbytes, -m) unlimited open files (-n) 1024 pipe size (512 bytes, -p) 8 POSIX message queues (bytes, -q) …