Hrm. https://osquery.slack.com/archives/CA4AQE3MZ/p1708342766887499 does

--worker_threads

do anything? I see it defined, but I don’t see it used in the code

Yeah it's unused; comes from https://github.com/osquery/osquery/commit/073dd2d5c4af5eabe0843fec8b42481f18b37dcd, when the dispatcher was actually dispatching tasks between a fixed number of worker threads. We now just have a thread per "service".

Looks like it was removed in https://github.com/osquery/osquery/pull/1924