To see if a thread is high on the CPU

JPS get PID

pidstat-p [PID]-T-T represents the information that displays all the threads in the process

06:20:32 PM tgid TID%usr%system%guest%cpu CPU Command
06:20:32 PM 2996-6.16 0.22 0.00 6.38 Java
06:20:32 PM-2996 0.00 0.00 0.00 0.00
06:20:32 PM-3068 0.00 0.00 0.00 0.00 1 |__java
06:20:32 PM-3069 0.12 0.00 0.00 0.12
06:20:32 PM-3070 0.12 0.00 0.00 0.12
06:20:32 PM-3071 0.12 0.00 0.00 0.12
06:20:32 PM-3072 0.12 0.00 0.00 0.12 8 |__java

For example, using thread Id:tid 2996,

Convert to 16 binary: Echo ' 3068 ' |      awk ' {printf ("\\x%02x\\x%02x\n", $1/256, $1%256);} ' Get \x0c\x1a

jstack-l [PID] >> textfile

Go to jstack output file Textfile to find the one that Nid is C1A, the thread that generally accounts for the higher CPU is the GC thread of the JVM.

To see if a thread is high on the CPU