In Linux, how to tell how much memory processes are using?

Question

I think I may have a memory leak in my LAMP application (memory gets used up, swap starts getting used, etc.). If I could see how much memory the various processes are using

Answer 1

The tool you want is ps. To get information about what java programs are doing:

ps -F -C java 

To get information about http:

ps -F -C httpd

If your program is ending before you get a chance to run these, open another terminal and run:

while true; do ps -F -C myCoolCode ; sleep 0.5s ; done