every minute: "I/O loop cycle took .... ms for 2 events"

[Christoph]

> This means there are events that take 6 s, possibly postponing other
> events. May cause problems if you would run some protocols configured
> with tight timers (e.g. OSPF set to 5 s dead interval).
> 
> This is probably kernel table sync. Do you export full BGP to
> kernel? Is this on BSD?

Yes this is on a system doing fulltable BGP exports to kernel
on FreeBSD 12 (BIRD 2.0.6).

Is there anything that we can change in the configuration
to mitigate this issue or should we just ignore it?
Or is this a bug in BIRD 2?

thanks,
Christoph