--- old/test/jdk/java/nio/channels/Selector/RegisterDuringSelect.java	2018-07-27 14:50:26.000000000 +0800
+++ new/test/jdk/java/nio/channels/Selector/RegisterDuringSelect.java	2018-07-27 14:50:26.000000000 +0800
@@ -25,6 +25,9 @@
  * @bug 8201315
  * @summary Test that channels can be registered, interest ops can changed,
  *          and keys cancelled while a selection operation is in progress.
+ * @library /test/lib
+ * @build jdk.test.lib.Utils
+ * @run main RegisterDuringSelect
  */
 
 import java.io.IOException;
@@ -38,6 +41,8 @@
 import java.util.concurrent.Future;
 import java.util.concurrent.Phaser;
 
+import jdk.test.lib.Utils;
+
 public class RegisterDuringSelect {
 
     static Callable<Void> selectLoop(Selector sel, Phaser barrier) {
@@ -84,11 +89,13 @@
                 SelectionKey key = sc.register(sel, SelectionKey.OP_READ);
                 if (!sel.keys().contains(key))
                     throw new RuntimeException("key not in key set");
+                Thread.sleep(Utils.adjustTimeout(50));
                 sel.wakeup();
                 barrier.arriveAndAwaitAdvance();
 
                 System.out.println("interestOps ...");
                 key.interestOps(0);
+                Thread.sleep(Utils.adjustTimeout(50));
                 sel.wakeup();
                 barrier.arriveAndAwaitAdvance();