Trigger: Detect lags from ping item

[Spikedammage]

Hi everyone,

Im using zabbix 2.0.3 on a debian machine.

I'm monitoring several links (fiber, xDSL).
For each link i got an item which returns the ping response time in ms.
I have few triggers that alert me if a link is down or if X% of packets are lost for a given time.

I was wondering how can i create a trigger expression that ll be true when i got an abnormal latency on a link depending on the normal reponse time of the link. I was thinking about something like that :


In theory:
if Y% of X last values of Z (the given item), are Greater-than the average of the same item on 1 hour then the trigger ll be true.

i want to use the count + avg function in the same expression on the same item:

 Zitem.[B]count[/B](#X,Zitem.[B]avg[/B](3600),"gt")>Y

In practice i tried this :

item.key : PingSecAvg.sh[1,{IPADDRESS}]

{Remote_Hosts:PingSecAvg.sh[1,{IPADDRESS}].[B]count[/B](#20,Remote_Hosts:PingSecAvg.sh[1,{IPADDRESS}].[B]avg[/B](3600),"gt")}>10

Error throw when i try to save the trigger :

Unexpected symbol "," in trigger function. Check expression part starting from "),"gt")}>10".

So i tried to add "{}" arround the item :

{Remote_Hosts:PingSecAvg.sh[1,{IPADDRESS}].count(#20,[B]{[/B]Remote_Hosts:PingSecAvg.sh[1,{IPADDRESS}].avg(3600)[B]}[/B],"gt")}>10

but then i got this error :

Incorrect closing parenthesis in trigger expression. Check expression part starting from "")}>10".

Am i actually too blind to see an obvious typing error on parenthesis or can't i call the function "avg" as parameter of the function count? If so there is a way to do that with a single trigger and a single item ?

Thanks for taking time

[steveboyson]

I doubt that you can use nested functions.
You may want to try complete function definitions and do tha maths later:

(({item1.function1} > 3600) && (item1.function2} < 12345)) > 789

[Spikedammage]

Thanks for your reply steve!

Indeed i think you are right about nested functions. I tried few syntax but i can't make it works.

I'm gonna check this out when i have some free time

regards