test/hotspot/jtreg/serviceability/jvmti/HeapMonitor/MyPackage/HeapMonitorStatRateTest.java
branchhttp-client-branch
changeset 56840 94b0c37babde
parent 56839 8ca7b2673b12
parent 51182 b0fcf59be391
child 56841 d5fa8a463060
--- a/test/hotspot/jtreg/serviceability/jvmti/HeapMonitor/MyPackage/HeapMonitorStatRateTest.java	Mon Jul 23 11:47:03 2018 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,85 +0,0 @@
-/*
- * Copyright (c) 2018, Google and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-package MyPackage;
-
-/**
- * @test
- * @summary Verifies the JVMTI Heap Monitor sampling rate average.
- * @build Frame HeapMonitor
- * @compile HeapMonitorStatRateTest.java
- * @requires vm.compMode != "Xcomp"
- * @run main/othervm/native -agentlib:HeapMonitorTest MyPackage.HeapMonitorStatRateTest
- */
-
-public class HeapMonitorStatRateTest {
-
-  private native static double getAverageRate();
-
-  private static boolean testRateOnce(int rate, boolean throwIfFailure) {
-    HeapMonitor.resetEventStorage();
-    HeapMonitor.setSamplingRate(rate);
-
-    HeapMonitor.enableSamplingEvents();
-
-    int allocationTotal = 10 * 1024 * 1024;
-    HeapMonitor.allocateSize(allocationTotal);
-
-    HeapMonitor.disableSamplingEvents();
-
-    double actualCount = HeapMonitor.getEventStorageElementCount();
-    double expectedCount = allocationTotal / rate;
-
-    double error = Math.abs(actualCount - expectedCount);
-    double errorPercentage = error / expectedCount * 100;
-
-    boolean failure = (errorPercentage > 10.0);
-
-    if (failure && throwIfFailure) {
-      throw new RuntimeException("Rate average over 10% for rate " + rate + " -> " + actualCount
-          + ", " + expectedCount);
-    }
-
-    return failure;
-  }
-
-
-  private static void testRate(int rate) {
-    // Test the rate twice, it can happen that the test is "unlucky" and the rate just goes above
-    // the 10% mark. So try again to squash flakiness.
-    // Flakiness is due to the fact that this test is dependent on the sampling rate, which is a
-    // statistical geometric variable around the sampling rate. This means that the test could be
-    // unlucky and not achieve the mean average fast enough for the test case.
-    if (!testRateOnce(rate, false)) {
-      testRateOnce(rate, true);
-    }
-  }
-
-  public static void main(String[] args) {
-    int[] tab = {1024, 8192};
-
-    for (int rateIdx = 0; rateIdx < tab.length; rateIdx++) {
-      testRate(tab[rateIdx]);
-    }
-  }
-}