pstack 跟踪进程栈

[TOC] ## 概述 此命令可显示每个进程的栈跟踪, 可用于 问题:服务一直处于work状态（如假死状态，好似死循环） 则可以在一段时间内，多执行几次pstack，若发现代码栈总是停在同一个位置，那个位置就需要重点关注 ## 实例 ### pstack pid ``` /opt/app/tdev1$ps -fe| grep bash tdev1 7013 7012 0 19:42 pts/1 00:00:00 -bash tdev1 11402 11401 0 20:31 pts/2 00:00:00 -bash tdev1 11474 11402 0 20:32 pts/2 00:00:00 grep bash /opt/app/tdev1$pstack 7013 #0 0x00000039958c5620 in __read_nocancel () from /lib64/libc.so.6 #1 0x000000000047dafe in rl_getc () #2 0x000000000047def6 in rl_read_key () #3 0x000000000046d0f5 in readline_internal_char () #4 0x000000000046d4e5 in readline () #5 0x00000000004213cf in ?? () #6 0x000000000041d685 in ?? () #7 0x000000000041e89e in ?? () #8 0x00000000004218dc in yyparse () #9 0x000000000041b507 in parse_command () #10 0x000000000041b5c6 in read_command () #11 0x000000000041b74e in reader_loop () #12 0x000000000041b2aa in main () ```