How to avoid defects in the use of trigger function 'avg' ？

[Gary.W]

Ver 4.4.8 on centos7

Hi guys, I use 'avg' Function to trigger the alarm, use {ITEM.VALUE} in the action macro, but often found {ITEM.VALUE} and {ITEM.LASTVALUE} has deviated from the trigger value,how should I avoid this problem？

For Example： ...

[zerocold]

Для оптимизации ресурсов необходимо считать нагрузку на процессор, используемую память и свободное место на дисках. Среднее значение за месяц.
На хостах настроены необходимые элементы данных и треггеры.

Например:

• Элемент данных: vm.memory.size[pused], интервал проверки

...

[n00b_2.0]

I've found the documation for calculated items, but where it says:

avg("Zabbix Server:zabbix[wcache,values]",600)

I don't understand which each section is. I understand the 600 means 10 minutes. But what do I put in the other sections to check for ping response times?

...

[vendrusculo]

Boa tarde!

Perguntinha rápida, é possível usar uma "key" como parâmetro de uma função??

Key1 - custom.valor[1]

Key2 - custom.tempo[1]

Item Calculado = avg("custom.valor[1]",last("custom.tempo[1]"))
...

[LASN]

Hello all.

I've been looking for a way to trigger an event when last N values are greater than X. The function .last(#N) gets de Nth previous value, but I'd like to get all N values, and compare then to X. If all of them are greater than X, then trigger the event. Does a function like...

[fatiha]

Hi,

I create this trigger :
{myserver:myTest.str(OK)}#1}

But I don't want to check one time ! I want to check the values three times before sending an email.

I want to do the same thing as avg(#3), used with the value type : number.

...

[MartinJanda]

Hi,
I'm making trigger for SNMP trap. I need to create a trigger that will appear on the main page when it comes trap value 1, and it will remain displayed for 10 minutes. Then canceled.

I try function count(600) = 1 and count(600,1) = 1 and count(600,'1') = 1. Trigger starts,...