CPU Load / CPU Util

[Shadowsluke]

Hello,

By advance, sorry for my english (It's not easy to be french )
So I need some explanation about the item "system.cpu.load".
I looked for details in the documentation to understand the units of this item, but I didn't find anything.
The item "system.cpu.util", it's a percentage. So, the graphs of system.cpu.util and system.cpu.load should be the same, except for units ?

In fact, on a Windows server, I have these graphs :
System.cpu.load :

System.cpu.util :

They're totally different.
And finally, I don't understand the CPU Load graph.

Thank you for your help !

[just2blue4u]

util is percentage. right.

The LoadAVG is something totally different! As the LoadAVG is a common performance showing value for mostly unix systems, please search the web for the correct definition of this Item.
Short Definition: The LoadAVG is depending in the first case on how many processes are running simultaneous on the CPU. 4 Procs would result in a load like 4.xx (depending on some other things).
The LoadAVG has no "End"... With benchmark/stress tests, we get loads like 70...

[Shadowsluke]

Ok, thanks !

In fact, I have some problems on this Windows Server (it freezes without explanation).
So I used Zabbix to try to find an answer (because the Event Log doesn't say anything).

I thought that it could be a process problem.
According to you, can I detect a suspect activity with the system.cpu.load item ? Because I put a trigger with the value "3", but finally, it doesn't mean anything

Thank you again for your answer

[nelsonab]

Load average is the average number of processors waiting for or being executed by the processors. If you have one process waiting for IO but not doing anything it can quickly bump your load average to 1 even though the CPU is idle.

[Shadowsluke]

Thanks, I understand now

Finally, this item isn't useful for my problem
So I try to see memory consumed by each process.
I used this item : proc.mem[store.exe] for the "Store.exe" process.
But I see the total memory. I would like to see the average per second. If I choose "Speed per second", nothing's change.
Have you an idea ?
Or maybe can we see the CPU time consumed by each process ? (I dream ? )

[mindas]

> can we see the CPU time consumed by each process ?

It is likely possible, yet might be awkward.

Go to your server, Start->Administrative Tools->Performance.
Try to get your process for CPU graph there (right click->Add Counters->...), and configure this data to be available for ZABBIX.

Regards,
Mindaugas

[Shadowsluke]

Ok, I'm going to try.
Thanks !!

[ittec]

Cpu doubt

I have installed zabbix agent from http://www.suiviperf.com/zabbix/ and i have only 3 parameters to monitoring cpu and there is no System.cpu.util. Template of host added is Windows.

Any idea?

PD:

I read on documentation about cpu.util. I added a new item called "CPU Util" with this setup:

Cpu Util	
system.cpu.util[all,idle,avg1]	
30	
90	
365	
ZABBIX agent	
Active 	
CPU

Then i add new graph and try to select new item but item appears like "Not supported". I installed 1.4.6 zabbix agentd windows from http://www.suiviperf.com/zabbix/

PD2: Ok, finally i find one answer of niak that really help me. Thanks niak.

[Laca]

Hi Ittec!

The Zabbix Manual 1.6 describes, that the system.cpu.util key is supported by zabbix on Windows platform, but the type and mode variables arent!

You might use the following key:

system.cpu.util[all]

It works for me.