(defvar *gc-run-time* 0
#!+sb-doc
- "the total CPU time spent doing garbage collection (as reported by
- GET-INTERNAL-RUN-TIME)")
+ "Total CPU time spent doing garbage collection (as reported by
+GET-INTERNAL-RUN-TIME.) Initialized to zero on startup. It is safe to bind
+this to zero in order to measure GC time inside a certain section of code, but
+doing so may interfere with results reported by eg. TIME.")
(declaim (type index *gc-run-time*))
(defun print-time (&key real-time-ms user-run-time-us system-run-time-us