How to get memory usage of a Minecraft server?

I am creating a Minecraft control panel at the moment and having trouble by getting the memory usage of the process.

My current process:

• launch the server in a screen
• get the pid of the screen
• fetch amount of ram with command ps -p <pid> -o %mem

The error is, that it is always showing me a usage of 0.0 KB

I'm using Debian Linux.

Any ideas?

3

1 Answer

That's because the pid that you're searching is the pid of screen. The minecraft jar should have a ppid (parent pid) of the screen, so run:

ps -el | grep <pid of screen>

you should get something like:

root@ubuntu:~# ps -el | grep 26270
5 S 0 26270 1 0 80 0 - 6797 poll_s ? 00:00:00 screen
4 S 0 26271 26270 49 80 0 - 1026274 futex_ pts/0 00:00:15 java

where 26271 is the pid of the process inside of the screen

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