Question High memory usage in Digital Ocean droplet

[RaelB]

Server operating system version

Ubuntu 22.04

Plesk version and microupdate number

18.0.52

Hi,
I have created a droplet at Digital Ocean with the plesk marketplace 1-click image (Version 18.0.52 OS Ubuntu 22.04). (1 GB ram)
So far I have done very little in the plesk control panel. Just setup the Digital Ocean DNS, and created a Let's Encrypt SSL certificate.
Also, the site is not in use at the moment (except when I log in to the control panel..)
In Digital Ocean, the graphs shows a high and constant memory usage of the droplet. 80% of 1GB. (See image)
(The disk usage is also constant at around 20%).
Is it normal for the memory usage to be so high? I would imagine it to be low when the droplet is not being used.

Thanks

 

[Martin Dias]

Linux does cache so the use being higher is normal, see: Help! Linux ate my RAM!
Over SSH you can check it better with free -m, there you can see what is under the column “available” instead of the “free”
But also 1 GB is not a lot of ram, so I would not expect too much of it

 

[RaelB]

Interesting, thanks for the link

 

[Dave W]

Also remember you need min 1G RAM and 1G SWAP as recomended by Plesk Requirements – Hardware & Software

For anything usable though Id look at min 2GB RAM