Find memory used by Services.
 

Hello

I know how to find memory used by processes by using ps or top command. But how do I find memory usage by services.

I want to see how much these each service are consuming ram.

Give htop a try - it shows services and memory used on my box. Can't speak for whether it shows this data in distros using systemd because I use runit.

Your using Ubuntu. right? Why don't you just use the system monitor? It's graphic and preinstalled on all the Ubuntus I have run.

No. It's Fedora 27. System Monitor shows only processes. I'm referring to services.

Anyway came across this article monitoring systemd services by using systemd-cgtop. Will check and see if it works.

So, you want to display only services in the output?

That cgtop looks interesting - note on F27 you will have to enable most of that accounting yourself.

I agree with syg00.

Look at man systemd-cgtop or check this link: https://www.freedesktop.org/software...emd-cgtop.html

Here's a bit of the output:

Most services, as opposed to daemons (processes) were using little or no memory.

After following the steps (except last one) as mentioned on this website, I'm getting the following result:

But, If I check the total residential memory usage of samba through ps, I get this result.

Please note that for samba systemd-cgtop show memory usage of 1.7mb, whereas ps show the usage of nearly 30mb. Also, both systemd-cgtop and pidof smbd shows same 4 tasks. But in pf command, only 3 tasks are shown, PID 971, in this case, is missing.

How come there is a difference. Appreciate if someone explains why.

Thanks

I don't know the answer to your last question about the missing pid (although I note that the -C wants process names, not pids, so I don't understand how it works at all... -p wants a pidlist), but isn't the ps total shown nearly 30Kb -- not 30Mb???

You're right I should have used -p. For some good reason, Its now showing correctly. And I think its mb not kb.

Thanks