I'm using FreeBSD 11.1-RELEASE with ZFS.
From periodic `find` is running every night and it causes a problem with vnlru - ~100% CPU usage. `Find` finishing its work about a few hours later (before upgrade, on FreeBSD 10.3 it was a few minutes and minimal usage of CPU).
When I run `find` at day manually - it also using 100% CPU by vnlru.
The "solution" is bump kern.maxvnodes value and vnlru CPU usage is about 0% for few minutes and again I need to bump kern.maxvnodes until `find` finish its job.