diff -r c97db0855565 -r 758c07667682 src/share/vm/gc_implementation/parallelScavenge/parallelScavengeHeap.cpp
--- a/src/share/vm/gc_implementation/parallelScavenge/parallelScavengeHeap.cpp	Tue Feb 04 17:38:01 2020 +0800
+++ b/src/share/vm/gc_implementation/parallelScavenge/parallelScavengeHeap.cpp	Tue Feb 04 18:13:14 2020 +0800
@@ -530,6 +530,10 @@
     full_gc_count = Universe::heap()->total_full_collections();
   }
 
+  if (GC_locker::should_discard(cause, gc_count)) {
+    return;
+  }
+
   VM_ParallelGCSystemGC op(gc_count, full_gc_count, cause);
   VMThread::execute(&op);
 }