How to put a limit (Memory Max=) on a systemd service in a Raspberry Pi?

**vpeter** · February 12, 2019 at 2:03 PM

I think only cgroup_memory=1 should be enough.

edjalmo · February 12, 2019 at 2:16 PM

Look this images.

I added a limit of 120M for the service. But when I do top shows it use 16% of memory. This is more than 125M (RPi 1gb of RAM).

I'm understanding things wrong or it's not working?

Ps:. apparently this service has 2 pid, whitch shows 16% is one (PID 640), and when I do systemctl status is another (PID 521).

edjalmo · February 13, 2019 at 4:46 PM

Quote from edjalmo

Look this images.

I added a limit of 120M for the service. But when I do top shows it use 16% of memory. This is more than 125M (RPi 1gb of RAM).

I'm understanding things wrong or it's not working?

Ps:. apparently this service has 2 pid, whitch shows 16% is one (PID 640), and when I do systemctl status is another (PID 521).

It's working!

I don't know why top shows 16% (I think this is not the real memory RAM usage), but it work!

**mglae** · February 13, 2019 at 5:34 PM

Quote from edjalmo

I don't know why top shows 16% (I think this is not the real memory RAM usage), but it work!

For the record:

Top shows the available memory in the KiB Mem line. The resident memory of the process is printed in the RES column.