grep 'parking to wait for' gs2_jstack_141203.txt | uniq -c | sort -n
查看哪个锁出现次数最多
http://blog.csdn.net/happygongzhuo/article/details/6808982
To display line numbers along the left side of a window, type any one of the following command while using text editor::set number
or:set nu
http://*.com/questions/9443694/how-to-add-line-number-for-a-output
http://bbs.linuxpk.com/thread-7949-1-1.html
http://techthrob.com/2010/07/how-to-monitor-network-traffic-in-linux/
http://www.computerhope.com/unix/top.htm