Preprocessing Item Issue - Zabbix 4.2.4

[jorcor]

Hi Zabbixians community :P

System description:

My system is Centos7 + Zabbix Server 4.2.4. + PostgreSQL 9.2.

Device monitoring:

Switch: Ubiquiti ES-16-XG

The process parameters of my Zabbix are:

15 Pollers
5 PollersUnracheable
6 DBSyncers

And Timeout for SNMPqueries of 4 seconds.

Problem Description:

I'm trying to monitorizing the speed port of the switch with SNMP items.

I don't use bulk request in host configuration

The item is autodiscovered through LLD Discovered Rule.

Thats is a example of my item configuration:



With preprocessing:



But I think that Custom on fail feature don't work neither:



I have a trigger with nodata validation:




The problem appears when the SNMP items need preprocessing (multiplier, change per second) the trigger tell that the item don't receive data and only triggered with preprocessing items, the others work fine and device can handle a lot of snmp queries

I'm monitoring zabbix server too and seems ok:



NOTE: The cache chart shows % of used mem (not %freeMem)

And there isn't message in logs file. T,t

Can you help me with that?

Thank you and sorry for my english.

[jorcor]

I update Zabbix to 2.4.5 because that issue https://support.zabbix.com/browse/ZBX-16263 it's related with my problem.

After udpate, SNMP items with preprocessing continue to suffer delay.

i try to increase update interval for SNMP item of 5 to 10 minutes but the problem persist too.

Some idea?