Workaround for Java program that causes CPU utilization 100%

1) First use top to find out which thread occupies the CPU

#top

View the process number for CPU 100%, such as process number 16459

#top-H-P 16459

And then see which PID is higher to find the PID 100% CPU

PID USER PR NI VIRT RES SHR S%cpu%MEM time+ COMMAND

16539 Root 0 1673m 525m 10m R 98.9 13.3 6:36.83 java

16462 Root 0 1673m 525m 10m S 1.0 13.3 0:04.07 java

16463 Root 0 1673m 525m 10m S 1.0 13.3 0:04.06 java

It's 16539 from here.

# jstack-f 16539 >/root/cpu_100.txt

View Cpu_100.txt This line of Thread 16539: (state = In_java) can see the problem.

Workaround for Java program that causes CPU utilization 100%