ask about zabbix queue item

[janusdai]

I want ask about zabbix queue item.
I read the official instructions., but I still don't understand.

"A special internal item zabbix[queue,<from>,<to>] can be used to monitor the health of the queue in Zabbix. It will return the number of items delayed by the set amount of time."

what's the meaning of the "from" and "to"
ex: zabbix[queue,6,10] <==It's mean queue delay from 6s to 10s?
and if queue delay over setting,what's the return value?

I want set Triggers to monitor it,ex: over the number of delay,it will alarm

who know,please help me ,thanks a lot

[BDiE8VNy]

First, there does not exist any queue in Zabbix. The Queue is just a calculation on how long data is missing based on the last received value of an item and its update interval.

The item parameters from and to do exactly this - counting how many items have delayed data between from and to. While to is optional.
E.g. zabbix[queue,5m] just counts items having delayed data for at least 5 minutes.

[janusdai]

First, there does not exist any queue in Zabbix. The Queue is just a calculation on how long data is missing based on the last received value of an item and its update interval.

The item parameters from and to do exactly this - counting how many items have delayed data between from and to. While to is optional.
E.g. zabbix[queue,5m] just counts items having delayed data for at least 5 minutes.

Thx,I understand.
So, The "From and to" just set a time period。

ex:
I want to set up more than 5 minutes to 10 minutes delay of the project， and the counting more than 3 will alarm
The trigger set:
{Zabbix server:zabbix[queue,5m,10m].last()} > 3
Am I right?

[BDiE8VNy]

Items lacking of data less than 5 minutes or more than 10 minutes would not be considered then. If this is what you wanted to achieve, then Yes