Zabbix incorrectly reporting vm.memory.size[pused]

[mbadmin]

I'm trying to figure out why my server shows that I am using 90%+ of available memory.

I have an item setup to report on vm.memory.size[pused] and the graph is writing data, I just don't believe it to be correct. My system I noticed this on has 48GB total memory.

Here's the actual output of free -g :


total used free shared buff/cache available
Mem: 46 22 2 2 21 19
Swap: 3 0 3




I went to the docs and see that pused is defined as:
pused - active + wired memory as percentage of 'total'

So I decided to create 3 more items... vm.memory.size[active] and vm.memory.size[wired] and vm.memory.size[total] (this one already exists) to try and troubleshoot.

The only one that actually shows me any data at all is vm.memory.size[total], the other two parameters of "wired" and "active" don't appear to return any data.

-mb

[dimir]

The page that you refer to has indeed explanation of metrics to get memory usage. But this page explains which parameters are supported on which platform:

- active: FreeBSD, OpenBSD, NetBSD, Mac OS X, HP-UX
- wired: FreeBSD, OpenBSD, NetBSD, Mac OS X

I assume you are trying this on Linux. At the bottom of the page you refer to there is another link to more detailed explanation about the metric parameters.

[mbadmin]

Thanks, that definitely explains why the wired and active don't work. Does this mean by extension that the pused wont be correct?

[dimir]

Not at all. It should be correct.