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Graphs and monitoring differs from real memory usage?

Posted on July 28, 2017

MySQL

Ubuntu 16.04

Java

Monitoring

By c0nf1ck

Hey, i hope you guys help me out with this issue.

Currently i have a 1gb ram droplet with ubuntu 16.04.2 os.

On my droplet dashboard, the memory graphs says that im using about 71.8% of my ram. See: Dashboard graphs image

But inside my droplet, i run a command to display the current memory usage (%) and the result is this: Inside droplet

As you guys can see, mysql are using 26.6% of my ram, and my java webservice is using 32.2, and some other process that dont mean almost nothing to the vm. At the memory graphs, it stills going up and up, but at my droplet, it still the same. Java at 32.2% and mysql at 26.6%

Maybe im looking at the graphs wrong? Or its really a bug in the dashboard?

Thanks.

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Mouhsen Ibrahim

July 28, 2017

@c0nf1ck

I cannot answer your question about the dashboards but to get the real memory usage from the command line you can use this command free -h it will give you your total RAM, currently used, free, shared buffered and cached, this is the output from one of my servers

root@backup01:~# free -h
             total       used       free     shared    buffers     cached
Mem:          7.7G       7.0G       683M        89M       4.1G       891M
-/+ buffers/cache:       2.0G       5.7G
Swap:         7.9G       406M       7.5G

The values in the first line could be misleading look at the second one it says 2.0G of my 7.7G are used which means memory usage is 25% what are your values?

Also note that these values differ from time to time so check the last value in your dashboard with the value you got in your terminal.

Hope this helps.

c0nf1ck

October 23, 2019

Do yourself a favor, as me, migrate everything to VULTR. Too much better than digital ocean!

Thank me later :)

Matt Hiscock

July 12, 2018

Where is the status of the bug? We need this resolving as we are getting mem alerts, and have to log in to console each time to run Free -h

Can we get a timescale please?

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