jdk8-mips64-public/hotspot: test/gc/g1/TestGCLogMessages.java@570cb6369f17 (annotated)

test/gc/g1/TestGCLogMessages.java@570cb6369f17 (annotated)

test/gc/g1/TestGCLogMessages.java

Mon, 21 Jul 2014 09:40:19 +0200

author: tschatzl
date: Mon, 21 Jul 2014 09:40:19 +0200
changeset 6930: 570cb6369f17
parent 6413: 595c0f60d50d
child 6950: 6e1f418b39c3
permissions: -rw-r--r--

8019342: G1: High "Other" time most likely due to card redirtying
Summary: Parallelize card redirtying to decrease the time it takes.
Reviewed-by: brutisso

 /*
  * Copyright (c) 2014, Oracle 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.
  */
 /*
  * @test TestPrintGCDetails
  * @bug 8035406 8027295 8035398 8019342
  * @summary Ensure that the PrintGCDetails output for a minor GC with G1
  * includes the expected necessary messages.
  * @key gc
  * @library /testlibrary
  */
 import com.oracle.java.testlibrary.ProcessTools;
 import com.oracle.java.testlibrary.OutputAnalyzer;
 public class TestGCLogMessages {
   public static void main(String[] args) throws Exception {
     testNormalLogs();
     testWithToSpaceExhaustionLogs();
   }
   private static void testNormalLogs() throws Exception {
     ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
                                                               "-Xmx10M",
                                                               GCTest.class.getName());
     OutputAnalyzer output = new OutputAnalyzer(pb.start());
     output.shouldNotContain("[Redirty Cards");
     output.shouldNotContain("[Parallel Redirty");
     output.shouldNotContain("[Redirtied Cards");
     output.shouldNotContain("[Code Root Purge");
     output.shouldNotContain("[String Dedup Fixup");
     output.shouldNotContain("[Young Free CSet");
     output.shouldNotContain("[Non-Young Free CSet");
     output.shouldHaveExitValue(0);
     pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
                                                "-XX:+UseStringDeduplication",
                                                "-Xmx10M",
                                                "-XX:+PrintGCDetails",
                                                GCTest.class.getName());
     output = new OutputAnalyzer(pb.start());
     output.shouldContain("[Redirty Cards");
     output.shouldNotContain("[Parallel Redirty");
     output.shouldNotContain("[Redirtied Cards");
     output.shouldContain("[Code Root Purge");
     output.shouldContain("[String Dedup Fixup");
     output.shouldNotContain("[Young Free CSet");
     output.shouldNotContain("[Non-Young Free CSet");
     output.shouldHaveExitValue(0);
     pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
                                                "-XX:+UseStringDeduplication",
                                                "-Xmx10M",
                                                "-XX:+PrintGCDetails",
                                                "-XX:+UnlockExperimentalVMOptions",
                                                "-XX:G1LogLevel=finest",
                                                GCTest.class.getName());
     output = new OutputAnalyzer(pb.start());
     output.shouldContain("[Redirty Cards");
     output.shouldContain("[Parallel Redirty");
     output.shouldContain("[Redirtied Cards");
     output.shouldContain("[Code Root Purge");
     output.shouldContain("[String Dedup Fixup");
     output.shouldContain("[Young Free CSet");
     output.shouldContain("[Non-Young Free CSet");
     // also check evacuation failure messages once
     output.shouldNotContain("[Evacuation Failure");
     output.shouldNotContain("[Recalculate Used");
     output.shouldNotContain("[Remove Self Forwards");
     output.shouldNotContain("[Restore RemSet");
     output.shouldHaveExitValue(0);
   }
   private static void testWithToSpaceExhaustionLogs() throws Exception {
     ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
                                                "-Xmx10M",
                                                "-Xmn5M",
                                                "-XX:+PrintGCDetails",
                                                GCTestWithToSpaceExhaustion.class.getName());
     OutputAnalyzer output = new OutputAnalyzer(pb.start());
     output.shouldContain("[Evacuation Failure");
     output.shouldNotContain("[Recalculate Used");
     output.shouldNotContain("[Remove Self Forwards");
     output.shouldNotContain("[Restore RemSet");
     output.shouldHaveExitValue(0);
     pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
                                                "-Xmx10M",
                                                "-Xmn5M",
                                                "-XX:+PrintGCDetails",
                                                "-XX:+UnlockExperimentalVMOptions",
                                                "-XX:G1LogLevel=finest",
                                                GCTestWithToSpaceExhaustion.class.getName());
     output = new OutputAnalyzer(pb.start());
     output.shouldContain("[Evacuation Failure");
     output.shouldContain("[Recalculate Used");
     output.shouldContain("[Remove Self Forwards");
     output.shouldContain("[Restore RemSet");
     output.shouldHaveExitValue(0);
   }
   static class GCTest {
     private static byte[] garbage;
     public static void main(String [] args) {
       System.out.println("Creating garbage");
       // create 128MB of garbage. This should result in at least one GC
       for (int i = 0; i < 1024; i++) {
         garbage = new byte[128 * 1024];
       }
       System.out.println("Done");
     }
   }
   static class GCTestWithToSpaceExhaustion {
     private static byte[] garbage;
     private static byte[] largeObject;
     public static void main(String [] args) {
       largeObject = new byte[5*1024*1024];
       System.out.println("Creating garbage");
       // create 128MB of garbage. This should result in at least one GC,
       // some of them with to-space exhaustion.
       for (int i = 0; i < 1024; i++) {
         garbage = new byte[128 * 1024];
       }
       System.out.println("Done");
     }
   }
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

test/gc/g1/TestGCLogMessages.java@570cb6369f17 (annotated)

test/gc/g1/TestGCLogMessages.java