Host memory info (TOP vs rancher GUI)

Rancher 1.x
1

Hi there,

We have this “problem” in all our hosts, the memory displayed using TOP and Rancher GUI is not the same, for example:

Host with 10Gb ram:

  • using TOP we get 750mb free and the rest is used
  • using Rancher GUI we get only 4.34GB used

If we do a docker stats and sum all memory used it’s almost TOP says and not what Rancger GUI says.

Rancher Version: 1.4.2

Docker Version: 1.12.6

OS and where are the hosts located? (cloud, bare metal, etc): CoreOS 1298.6.0

What we’re missing here?

Thanks,
Carlos Silva

2

Memory in Linux is generally almost all always"used" because it doing nothing is a waste of energy. We subtract out “buffers” and “cache” because they are not part of the working memory of user processes and are freeable if needed.

3

Hi vincent,

Thanks for your answer.