--- old/src/hotspot/share/gc/g1/g1ConcurrentMark.cpp	2017-09-27 00:03:24.448292879 +0900
+++ new/src/hotspot/share/gc/g1/g1ConcurrentMark.cpp	2017-09-27 00:03:24.249292620 +0900
@@ -1045,8 +1045,6 @@
     return;
   }
 
-  SvcGCMarker sgcm(SvcGCMarker::OTHER);
-
   if (VerifyDuringGC) {
     HandleMark hm;  // handle scope
     g1h->prepare_for_verify();