--- a/src/hotspot/share/gc/g1/g1YoungRemSetSamplingThread.cpp	Thu Dec 20 14:03:56 2018 -0800
+++ b/src/hotspot/share/gc/g1/g1YoungRemSetSamplingThread.cpp	Fri Dec 21 01:25:46 2018 +0100
@@ -72,9 +72,9 @@
 
   // Check if load is lower than max.
   double recent_load;
-  if ((G1PeriodicGCSystemLoadThreshold > 0) &&
+  if ((G1PeriodicGCSystemLoadThreshold > 0.0f) &&
       (os::loadavg(&recent_load, 1) == -1 || recent_load > G1PeriodicGCSystemLoadThreshold)) {
-    log_debug(gc, periodic)("Load %1.2f is higher than threshold " UINTX_FORMAT ". Skipping.",
+    log_debug(gc, periodic)("Load %1.2f is higher than threshold %1.2f. Skipping.",
                             recent_load, G1PeriodicGCSystemLoadThreshold);
     return false;
   }