using system.cpu.num in a trigger expression

[jeffreys]

I'm sure this is a simple usage issue, but I'm not seeing the correct way to do this on the web anywhere.

I'd like to modify my
Processor load is too high on {HOST.NAME}
trigger

by adding in something at the end simple like this:

{Template OS Linux Load:system.cpu.load[all,avg1].min(#3)}>system.cpu.num[]/2


thus saying that if the runqueue on the machine (over the last 15 minutes) exceeds the number of cpu cores / 2, then we trigger this - not by giving it an arbitrary number.


Thoughts on how to make this work?

I've tried various permutations of this expression and it continues to return Incorrect trigger expression.

Thanks in advance

[aib]

Try this

{Template OS Linux Load:system.cpu.load[all,avg1].min(#3)}>{Template OS Linux Load:system.cpu.num.last(0)}/2

Please, check that you already configured both Items

• system.cpu.load[all,avg1]
• system.cpu.num

[jeffreys]

ok - this is getting closer

I no longer get the expression error, but now it's returning

Incorrect item key "system.cpu.num" provided for trigger expression on "Template OS Linux".

{Template OS Linux:system.cpu.load[all,avg1].min(#3)}>{Template OS Linux:system.cpu.num.last(0)}/2

I gather this means I need to define it in the Template Items tab, correct?

[jeffreys]

just defined the item - will give it a shot - thanks!

[aib]

Good Luck!
Tell me about results - if it works or not.

[jeffreys]

so far so good, both on ticket suppression and ticket creation in appropriate cases.

Thanks again for your help on this - sorry that it was a basic question, but it definitely helped out.

[aib]

Any time!

I'm happy that everything works.

[tchjts1]

Excellent! I need to do something very similar.