Tracking process stack command pstack

The pstack command must be run by the owner or root of the corresponding process. The stack trace of each process can be displayed. You can use pstack to determine where the process is suspended. The only option allowed by this command is the PID of the process to be checked.

Example

A program is written, sleep is suspended, and the PID of the process is viewed. Use pstack to view the PID. The result is as follows:

[Root @ SPA ~] # Ps aux | grep testroot 2901 0.0 0.0 3784 448 pts/0 S +. /testroot 2903 0.0 0.0 7188 pts/1 R + grep test [root @ SPA ~] # [Root @ SPA ~] # [Root @ SPA ~] # Pstack 2901 #1 0x000000325829a214 in sleep () from/lib64/libc. so.6 #2 0x000000000000004009c9 in main ()

This process is suspended at sleep.