1 /*
   2  * Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test SpaceUtilizationCheck
  26  * @summary Check if the space utilization for shared spaces is adequate
  27  * @library /test/lib
  28  * @modules java.base/jdk.internal.misc
  29  *          java.management
  30  * @run main SpaceUtilizationCheck
  31  */
  32 
  33 import jdk.test.lib.process.ProcessTools;
  34 import jdk.test.lib.process.OutputAnalyzer;
  35 
  36 import java.util.regex.Pattern;
  37 import java.util.regex.Matcher;
  38 import java.util.ArrayList;
  39 import java.lang.Integer;
  40 
  41 public class SpaceUtilizationCheck {
  42     // Minimum allowed utilization value (percent)
  43     // The goal is to have this number to be 50% for RO and RW regions
  44     // Once that feature is implemented, increase the MIN_UTILIZATION to 50
  45     private static final int MIN_UTILIZATION = 30;
  46 
  47     // Only RO and RW regions are considered for this check, since they
  48     // currently account for the bulk of the shared space
  49     private static final int NUMBER_OF_CHECKED_SHARED_REGIONS = 2;
  50 
  51     public static void main(String[] args) throws Exception {
  52         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  53            "-XX:+UnlockDiagnosticVMOptions",
  54            "-XX:SharedArchiveFile=./SpaceUtilizationCheck.jsa",
  55            "-Xshare:dump");
  56 
  57         OutputAnalyzer output = new OutputAnalyzer(pb.start());
  58         String stdout = output.getStdout();
  59         ArrayList<String> utilization = findUtilization(stdout);
  60 
  61         if (utilization.size() != NUMBER_OF_CHECKED_SHARED_REGIONS )
  62             throw new RuntimeException("The output format of sharing summary has changed");
  63 
  64         for(String str : utilization) {
  65             int value = Integer.parseInt(str);
  66             if (value < MIN_UTILIZATION) {
  67                 System.out.println(stdout);
  68                 throw new RuntimeException("Utilization for one of the regions" +
  69                     "is below a threshold of " + MIN_UTILIZATION + "%");
  70             }
  71         }
  72     }
  73 
  74     public static ArrayList<String> findUtilization(String input) {
  75         ArrayList<String> regions = filterRegionsOfInterest(input.split("\n"));
  76         return filterByPattern(filterByPattern(regions, "bytes \\[.*% used\\]"), "\\d+");
  77     }

   1 /*
   2  * Copyright (c) 2014, 2017, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test SpaceUtilizationCheck
  26  * @summary Check if the space utilization for shared spaces is adequate
  27  * @library /test/lib
  28  * @modules java.base/jdk.internal.misc
  29  *          java.management
  30  * @run main SpaceUtilizationCheck
  31  */
  32 
  33 import jdk.test.lib.cds.CDSTestUtils;
  34 import jdk.test.lib.process.OutputAnalyzer;
  35 
  36 import java.util.regex.Pattern;
  37 import java.util.regex.Matcher;
  38 import java.util.ArrayList;
  39 import java.lang.Integer;
  40 
  41 public class SpaceUtilizationCheck {
  42     // Minimum allowed utilization value (percent)
  43     // The goal is to have this number to be 50% for RO and RW regions
  44     // Once that feature is implemented, increase the MIN_UTILIZATION to 50
  45     private static final int MIN_UTILIZATION = 30;
  46 
  47     // Only RO and RW regions are considered for this check, since they
  48     // currently account for the bulk of the shared space
  49     private static final int NUMBER_OF_CHECKED_SHARED_REGIONS = 2;
  50 
  51     public static void main(String[] args) throws Exception {
  52         OutputAnalyzer output = CDSTestUtils.createArchive();
  53         CDSTestUtils.checkDump(output);


  54 

  55         String stdout = output.getStdout();
  56         ArrayList<String> utilization = findUtilization(stdout);
  57 
  58         if (utilization.size() != NUMBER_OF_CHECKED_SHARED_REGIONS )
  59             throw new RuntimeException("The output format of sharing summary has changed");
  60 
  61         for(String str : utilization) {
  62             int value = Integer.parseInt(str);
  63             if (value < MIN_UTILIZATION) {
  64                 System.out.println(stdout);
  65                 throw new RuntimeException("Utilization for one of the regions" +
  66                     "is below a threshold of " + MIN_UTILIZATION + "%");
  67             }
  68         }
  69     }
  70 
  71     public static ArrayList<String> findUtilization(String input) {
  72         ArrayList<String> regions = filterRegionsOfInterest(input.split("\n"));
  73         return filterByPattern(filterByPattern(regions, "bytes \\[.*% used\\]"), "\\d+");
  74     }