I wrote a tool for identifying which threads are chewing up all the CPU. I publicized it in my blog here
http://weblogs.java.net/blog/2008/03/25/hot-threads I think you could use this tool to identify which thread in your application is hogging the CPU and what that thread is doing. Bruce Quoting "[email protected]" <[email protected]>: > hi: > > I found a java process whose cpu is almost 100% at my notebook. > > Here is the top output: > > PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ > > 6150 root 20 0 1411m 612m 12m R 98.8 15.7 45:49.12 > > and the jstack output for thread 6150(0x1806): > "VM Thread" prio=10 tid=0x0000000040ca9000 nid=0x1806 runnable > > the last is jstat -gc output: > > S0C S1C S0U S1U EC EU OC OU PC > PU YGC YGCT FGC FGCT GCT > 64.0 64.0 0.0 0.0 332992.0 0.0 666304.0 73192.5 83968.0 > 83967.9 6893 17.576 6882 2705.923 2723.499 > > I don't know what the "VM Thread" is doing all the time. > > Some peopel encounter the same problem? > > Here is my enviromen: > Jvm: > java version "1.6.0_23" > Java(TM) SE Runtime Environment (build 1.6.0_23-b05) > Java HotSpot(TM) 64-Bit Server VM (build 19.0-b09, mixed mode) > > OS: > Linux 2.6.35-26-generic #46-Ubuntu SMP Sun Jan 30 06:59:07 UTC 2011 > x86_64 > GNU/Linux > > Thanks. > > > > -- > d0ngd0ng > > -- > You received this message because you are subscribed to the Google > Groups "The Java Posse" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/javaposse?hl=en. > > -- You received this message because you are subscribed to the Google Groups "The Java Posse" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/javaposse?hl=en.
