Question

I have source code and multithreading is enabled in that code. I checked with ps -eLf command its showing number of threads list, but i think load its not distributed in all the threads.so i want to know how we can check the load is distributed in all the threads or not.

According to me complete load is going to single thread.

Actually i want to improve the performance of my code.

I am using RHEL5.4 linux OS. Programming Language is C.

if anyone knows, please let me know…..

Thanks

Answer 1

Run this:

ps -p PID_OF_YOUR_PROCESS -L -o pid,tid,pcpu,state,nlwp,args

You will see something like this as output:

  PID   TID %CPU S NLWP COMMAND
 2305  2305  3.5 S    5 /usr/bin/cinnamon
 2305  2325  0.0 S    5 /usr/bin/cinnamon
 2305  2326  0.0 S    5 /usr/bin/cinnamon
 2305  2327  0.0 S    5 /usr/bin/cinnamon
 2305  2721  0.0 S    5 /usr/bin/cinnamon

TID is the thread id. You can see the cpu percentage of each thread.

Hope that answers your questions.