Index: trunk/psModules/src/imcombine/pmSubtraction.c
===================================================================
--- trunk/psModules/src/imcombine/pmSubtraction.c	(revision 20505)
+++ trunk/psModules/src/imcombine/pmSubtraction.c	(revision 20561)
@@ -1131,4 +1131,6 @@
     }
 
+    psTimerStart("pmSubtractionConvolve");
+
     bool threaded = pmSubtractionThreaded(); // Running threaded?
 
@@ -1347,4 +1349,7 @@
     }
 
+    psLogMsg("psModules.imcombine", PS_LOG_INFO, "Convolve image: %f sec",
+             psTimerClear("pmSubtractionConvolve"));
+
     return true;
 }