CircuitBuildTimes should have an option to disable
There should be both an option to disable CircuitBuildTimes timeout gathering and also some logic that autodetects when to disable it. In particular, it should be disabled automatically for directories, and clients that cannot write a Tor state file. There should also be a torrc option to disable it manually for tordnsel and other services.
[Automatically added by flyspray2trac: Operating System: All]