Disk / Memory USED

[fonzisherman]

Hi I have been searching through the forums and howtos for this, and have come up empty. I am curious how to get something like vfs.fs.size [c:,used] to work, and vm.memory.size [used]. i know there is a total and free, so if there is a way to have an item as a calculation (total - free) that would be fine, but looking at my graphs it seems counter intuitive to show free space and not used. i would basically like to graph on used space, memory, is there a way?

[MrKen]

According to page 101 Zabbix manual, there is no vm.memory.size[used].

vfs.fs.size [c:,used] works fine for me.

Type: zabbix agent
Key: vfs.fs.size[c:,used]
Type of info: Numeric (unsigned)
Units: B

Graphs for disk space, I use Total disk space & Used disk space. You can clearly see how much space is free.

HTH

[fonzisherman]

thanks, disk space used is working. has anyone done anything to get memory used somehow? this is on a windows server.

[fonzisherman]

anyone graphing on memory used somehow? seems like it would be a common way to visualize.. any help is appreciated!

[MrKen]

Not as difficult as you think.

In fact, it's the same as what I posted above for Disk Space graphs. Except this time you use

vm.memory.size[total]
vm.memory.size[free]

MrKen

[Calimero]

vm.memory.size[total]
vm.memory.size[free]

There's also vm.memory.size[available] which is memory that's free and "freeable" (free + cache + buffers) and is usually a bit more interesting than just "free".

[fonzisherman]

thanks, i guess its just a little counter-intuitive to see available/free vs used. from a monitoring/alert standpoint it doesnt really matter but from a graphing perspective i think 'used' would make more sense at a glance.

[MrKen]

There's also vm.memory.size[available] which is memory that's free and "freeable" (free + cache + buffers) and is usually a bit more interesting than just "free".

That's very interesting. Thanks for that.

I couldn't find it in my manual V1.6 Release 014, so I just downloaded the latest version, Release 017, and guess what? it's not there either.

Then I came across ZBX-390 where Alexei, on 8 July, is quoted as saying, "Fixed for 1.6.x manual. The old manual for 1.4.x won't be amended."

MrKen

[Calimero]

I couldn't find it in my manual V1.6 Release 014, so I just downloaded the latest version, Release 017, and guess what? it's not there either.

Then I came across ZBX-390 where Alexei, on 8 July, is quoted as saying, "Fixed for 1.6.x manual. The old manual for 1.4.x won't be amended."

I discovered it while browsing the zabbix_agent code for a unrelated problem.

And as we now have 'available' and 'total' I wish there were a 'used' parameter (total - available). Probably not a big change.

So far we use a UserParameter (free | grep ...) to get that value. But well... the less userparameters the better.

[hannibal20]

the vm.memory.size[available] item works only under linux ;-/

[harmonica]

I,

Perhaps with one script. Something as this:

#!/bin/bash


MTOTAL=`cat /proc/meminfo | grep "MemTotal" | sed 's/MemTotal: //g' | sed 's/ kB//g'`
MFREE=`cat /proc/meminfo | grep "MemFree" | sed 's/MemFree: //g' | sed 's/ kB//g'`
Kb=1024

echo $(((MTOTAL-MFREE)*Kb))

exit