jstat -J-Djstat.showUnsupported=true -name btrace.com.sun.btrace.samples.ThreadCounter.count 11674
http://rednaxelafx.iteye.com/blog/796343
http://rednaxelafx.iteye.com/blog/790875
kensipe.blogspot.com/2009/06/btrace-and-jstat.html
原文：http://www.cnblogs.com/jvava/p/4646189.html