How to fix gaps in Zabbix charts?

Question

Zabbix

Hello! Installed according to this article to monitor the PostregeSQL server. I am satisfied with the results, but after a couple of days of work, I noticed that for one database my graphs are drawn with breaks
. I think the problem is in the agent or the database itself, because. graphs on the state of the host itself are drawn without problems and gaps.
From my options:
1. Timeout dumps, Timeout=20 is specified in zabbix_agent.conf
2. Restrictions in connections in the database
Who is experienced, which way to start digging first?

Answer 1

Timeout=20 - timeout can be set and 30
I would dig in the direction of the reasons for not receiving data from the agent or item.