Dashboard Widgets very slow on version 3.4.1

[ChristianHo]

Hello,

On a Zabbix installation, I use, I did recently do an upgrade from Version 3.2 to Version 3.4.1. Most things work out of the box, but some Dashboard Widgets are now really slow (30+s in loading time).

Mostly, I can see that on the "last problems" widget, which takes a very long time to display the lines. Is there something, I can do to speed things up here ? Also on auto-refresh, it's loading very long. Other functionality of Zabbix does not seem to be affected.

System Information:

Zabbix Version: Zabbix 3.4.1
OS: Debian GNU/Linux 8.9
Database: PostgreSQL 9.4
CPU: 8 Intel Xeon CPU cores
Ram: 32 GB

Any hints for this problem ?

Best regards

Christian

[Saftnase]

Same with me after update from 3.2 to 3.4

problems widget and status of zabbix widget need a lot of time to display.

additionaly the status of zabbix widget displays that the server is not running and no other values (like Number of hosts, Number of items, etc..)

but after several page refreshes it shows zabbix server running and all the values as expected.

[tammyt]

Anyone already has a solution for this?
I am also having the problem of the status widget showing zabbix as is not running and the problems widget is way too slow.

[skygge]

The same issue here. "Problems" widget loading takes a lot of time!

BTW: How to get rid of the timeline and make the lines narrower as in the 3.2? We have projector and the "Problems" displayed on the wall, in v3.2 this was looking nice, now I see less than half...

[geek74]

Hello,

I had the same issue , in fact this is a bug if you have a lot of record in your table "sessions"

https://support.zabbix.com/browse/ZBX-12659

[skygge]

What means "a lot"? Count query on sessions table tells me 483. Is this a lot?