--- old/test/hotspot/jtreg/serviceability/sa/ClhsdbJhisto.java	2018-11-30 21:06:56.898036206 +0100
+++ new/test/hotspot/jtreg/serviceability/sa/ClhsdbJhisto.java	2018-11-30 21:06:56.737037695 +0100
@@ -34,6 +34,7 @@
  * @bug 8191658
  * @summary Test clhsdb jhisto command
  * @requires vm.hasSA
+ * @requires vm.gc != "Shenandoah"
  * @library /test/lib
  * @run main/othervm ClhsdbJhisto
  */