系统资源监控分析-优快云博客

网络统计：

$ sar -n DEV 1 100
Linux 2.6.32-358.23.2.el6.x86_64       09/22/2014      _x86_64_        (4 CPU)

10:36:07 PM     IFACE   rxpck/s   txpck/s    rxkB/s    txkB/s   rxcmp/s   txcmp/s  rxmcst/s
10:36:08 PM        lo      2.00      2.00      0.14      0.14      0.00      0.00      0.00
10:36:08 PM      eth0   2469.00   2216.00   6768.98    654.86      0.00      0.00      0.00

10:36:08 PM     IFACE   rxpck/s   txpck/s    rxkB/s    txkB/s   rxcmp/s   txcmp/s  rxmcst/s
10:36:09 PM        lo      0.00      0.00      0.00      0.00      0.00      0.00      0.00
10:36:09 PM      eth0   1971.00   1813.00   3830.18    700.99      0.00      0.00      0.00

内存统计：

$ sar -r  1 100
Linux 2.6.18-194.32.1.el5xen    09/22/2014

10:42:26 PM kbmemfree kbmemused  %memused kbbuffers  kbcached kbswpfree kbswpused  %swpused  kbswpcad
10:42:27 PM    768160   5523296     87.79     22892   2542596   3907972    284952      6.80     79044
10:42:28 PM    767176   5524280     87.81     22892   2543528   3907972    284952      6.80     79044

IO设备统计:

$ sar -d -p 1 1
Linux 2.6.18-194.32.1.el5xen    09/22/2014

10:44:14 PM       DEV       tps  rd_sec/s  wr_sec/s  avgrq-sz  avgqu-sz     await     svctm     %util
10:44:15 PM     nodev      0.00      0.00      0.00      0.00      0.00      0.00      0.00      0.00
10:44:15 PM     nodev      0.00      0.00      0.00      0.00      0.00      0.00      0.00      0.00
10:44:15 PM     nodev      0.00      0.00      0.00      0.00      0.00      0.00      0.00      0.00
10:44:15 PM     nodev      0.00      0.00      0.00      0.00      0.00      0.00      0.00      0.00
10:44:15 PM     nodev      0.00      0.00      0.00      0.00      0.00      0.00      0.00      0.00
10:44:15 PM     nodev      0.00      0.00      0.00      0.00      0.00      0.00      0.00      0.00
10:44:15 PM     nodev      0.00      0.00      0.00      0.00      0.00      0.00      0.00      0.00

参考：

http://www.cnblogs.com/bangerlee/articles/2545747.html