plockstat(1) on FreeBSD
The text b9291b2a0c3b, as FreeBSD 13.2-RELEASE, FreeBSD 13.1-RELEASE, FreeBSD 13.0-RELEASE shipped it.
Trace pthread lock statistics using DTrace
Flags it lists
-
-A -
-C -
-H -
-V -
-e -
-n -
-s -
-v -
-x