kern.kq_calloutmax - when to increase

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From: Eugene M. Zheganin <eugene_at_zhegan.in>
Date: Thu, 09 Sep 2021 17:17:13 UTC

Hello,

so imagine I have a web balancer using nginx with kqueue which handles 
numerous connections to a set of kqueue-enabled custom 
applications/backends, so my question is - should I ever touch the 
default kern.kq_calloutmax of 4K or should I left it there ? And if it 
should be tuned - where is the TCP connection treshold ?

Thanks.