如我的MySQL进程为：1918
#cat /proc/1918/smaps
[root@mon-bjds-bw-220-169 1918]# cat smaps
002b7000-002c0000 r-xp 00000000 08:02 2875176 /lib/libnss_files-2.5.so
Size: 36 kB
Rss: 20 kB
Shared_Clean: 20 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 0 kB
Swap: 0 kB
002c0000-002c1000 r-xp 00008000 08:02 2875176 /lib/libnss_files-2.5.so
Size: 4 kB
Rss: 4 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 4 kB
Swap: 0 kB
......有了这些信息，就可以分析程序性能表现了。