About the usage of memory when creating 100 ipsec tunnels of vit mode

[Zero_Kong]

I had tested 100 ipsec tunnels(vti mode) at several opnsenses of 20.1, and i had created 100 gateways for these 100 vti tunnels, so 100 dpinger processes had been created automatically too.
If i connect all SAs of these 100 tunnels at the same time, the memory(4G) will be cost in sevesal seconds. And i found that there were 100 processes of /usr/local/etc/rc.filter_configure running at the same time, which were caused by /usr/local/etc/rc.syshook.d/monitor/10-dpinger.
My questions are that:
    1. Why it will cost so much memory at this situation?
    2. If i remove the /usr/local/etc/rc.filter_configure from /usr/local/etc/rc.filter_configure, will it cause any problem?

[Patrick M. Hausen]

You could disable gateway monitoring for those gateways and use an external monitoring solution (Icinga, Nagios, Monit, ...)