diff --git a/Makefile.inc1 b/Makefile.inc1
index 73afbbfcbbc..6fba21f593b 100644
--- a/Makefile.inc1
+++ b/Makefile.inc1
@@ -965,16 +965,21 @@ WMAKE_TGTS+=	build${libcompat}
 buildworld: buildworld_prologue ${WMAKE_TGTS} buildworld_epilogue .PHONY
 .ORDER: buildworld_prologue ${WMAKE_TGTS} buildworld_epilogue
 
+_BUILDWORLD_START= .buildworld_start
 buildworld_prologue: .PHONY
 	@echo "--------------------------------------------------------------"
 	@echo ">>> World build started on `LC_ALL=C date`"
 	@echo "--------------------------------------------------------------"
+	@date '+%s' > ${_BUILDWORLD_START}
 
 buildworld_epilogue: .PHONY
 	@echo
 	@echo "--------------------------------------------------------------"
 	@echo ">>> World build completed on `LC_ALL=C date`"
 	@echo "--------------------------------------------------------------"
+	@seconds=$$(($$(date '+%s') - $$(cat ${_BUILDWORLD_START}))); \
+	  echo -n ">>> World build in $$seconds seconds, "; \
+	  echo "ncpu: $$(sysctl -n hw.ncpu)${.MAKE.JOBS:S/^/, make -j/}"
 
 #
 # We need to have this as a target because the indirection between Makefile