How to check thread load within a process in embedded linux system?

check_threads_status_in_a_process.txt

How to check threads status within a process in embedded linux system?
Author: Ben Wei 2017-11-28
system linux kernel 3.10.73+

# ps aux | grep pulseaudio | grep -v grep
pulse      142  7.5  4.3  44312  4664 ?        S<sl Nov24 406:35 /usr/bin/pulseaudio --daemonize=no

## use top command with -H, you can browse the thread load in the file
# top -H -p 142

top - 11:28:11 up 3 days, 17:15,  0 users,  load average: 4.86, 4.43, 4.19
Threads:   3 total,   1 running,   2 sleeping,   0 stopped,   0 zombie
%Cpu(s): 51.0 us, 28.4 sy,  0.0 ni, 19.7 id,  0.0 wa,  0.0 hi,  1.0 si,  0.0 st
KiB Mem :   107248 total,    10544 free,    42236 used,    54468 buff/cache
KiB Swap:        0 total,        0 free,        0 used.    33426 avail Mem

  PID USER      PR  NI    VIRT    RES    SHR S %CPU %MEM     TIME+ COMMAND
  155 pulse     -6 -11   44312   4664   3096 S  6.2  4.3 362:28.63 alsa-source+
  142 pulse      9 -11   44312   4664   3096 R  1.0  4.3  44:04.68 pulseaudio
  154 pulse     -6 -11   44312   4664   3096 S  0.0  4.3   0:00.03 alsa-sink-r+

* you can watch out the RES field which indicates memory usage of the thread to check memory leak or not.