Increasing memory consumption on zabbix agent

[Yonebayashi]

I am running four zabbix server with one proxy and few hundred devices that was monitored. I noticed my memory consumption kept on creeping up with rate of around 0.5Gb to 1.5Gb per week. Restarting the zabbix service temporarily reduce them to 800mb but keep on creeping up. The zabbix are running version 7.0 LTS. Below is the current result from htop. Anyone have any idea what is going on with my proxy or maybe zabbix in general? Let me know if you need other details.

[fpawlicki]

Just to be clear, are you talking about persistent memory? It would be helpful to provide some metrics for this issue.

Cheers