--- jsr166/src/jsr166y/ForkJoinPool.java	2011/03/21 23:29:03	1.98
+++ jsr166/src/jsr166y/ForkJoinPool.java	2011/03/23 11:27:43	1.99
@@ -864,7 +864,8 @@ public class ForkJoinPool extends Abstra
                 w.parked = false;
                 if (w.eventCount != v)
                     break;
-                else if (System.nanoTime() - startTime < SHRINK_RATE)
+                else if (System.nanoTime() - startTime < 
+                         SHRINK_RATE - (SHRINK_RATE / 10)) // timing slop
                     Thread.interrupted();          // spurious wakeup
                 else if (UNSAFE.compareAndSwapLong(this, ctlOffset,
                                                    currentCtl, prevCtl)) {