diff -r 1f60a119863a -r f74dbdd45754 src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp
--- a/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp	Mon Mar 02 11:08:09 2015 +0100
+++ b/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp	Fri May 17 17:24:20 2013 +0200
@@ -6634,7 +6634,6 @@
 }
 
 void CMSCollector::do_CMS_operation(CMS_op_type op, GCCause::Cause gc_cause) {
-  gclog_or_tty->date_stamp(PrintGC && PrintGCDateStamps);
   TraceCPUTime tcpu(PrintGCDetails, true, gclog_or_tty);
   GCTraceTime t(GCCauseString("GC", gc_cause), PrintGC, !PrintGCDetails, NULL, _gc_tracer_cm->gc_id());
   TraceCollectorStats tcs(counters());