1 /*
2 * Copyright (c) 2015, 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 TestPLABResize
26 * @bug 8141278
27 * @summary Test for PLAB resizing
28 * @requires vm.gc=="G1" | vm.gc=="null"
29 * @library /testlibrary /../../test/lib /
30 * @modules java.management
31 * @build ClassFileInstaller
32 * sun.hotspot.WhiteBox
33 * gc.g1.plab.lib.LogParser
34 * gc.g1.plab.lib.Storage
35 * gc.g1.plab.lib.PLABUtils
36 * gc.g1.plab.lib.AppPLABResize
37 * @run main ClassFileInstaller sun.hotspot.WhiteBox
38 * sun.hotspot.WhiteBox$WhiteBoxPermission
39 * @run main gc.g1.plab.TestPLABResize
40 */
41 package gc.g1.plab;
42
43 import java.util.ArrayList;
44 import java.util.Arrays;
45 import java.util.List;
46 import java.util.Map;
47 import java.util.stream.Collectors;
48 import java.io.PrintStream;
49
50 import gc.g1.plab.lib.LogParser;
51 import gc.g1.plab.lib.PLABUtils;
52 import gc.g1.plab.lib.AppPLABResize;
53
54 import jdk.test.lib.OutputAnalyzer;
55 import jdk.test.lib.Pair;
56 import jdk.test.lib.ProcessTools;
57
58 /**
59 * Test for PLAB resizing.
60 */
61 public class TestPLABResize {
62
63 private static final int OBJECT_SIZE_SMALL = 10;
64 private static final int OBJECT_SIZE_MEDIUM = 70;
65 private static final int OBJECT_SIZE_HIGH = 150;
66 private static final int GC_NUM_SMALL = 1;
67 private static final int GC_NUM_MEDIUM = 3;
68 private static final int GC_NUM_HIGH = 7;
69 private static final int WASTE_PCT_SMALL = 10;
70 private static final int WASTE_PCT_MEDIUM = 20;
71 private static final int WASTE_PCT_HIGH = 30;
72
73 private static final int ITERATIONS_SMALL = 3;
74 private static final int ITERATIONS_MEDIUM = 5;
75 private static final int ITERATIONS_HIGH = 8;
76
77 private final static TestCase[] TEST_CASES = {
78 new TestCase(WASTE_PCT_SMALL, OBJECT_SIZE_SMALL, GC_NUM_SMALL, ITERATIONS_MEDIUM),
79 new TestCase(WASTE_PCT_SMALL, OBJECT_SIZE_MEDIUM, GC_NUM_HIGH, ITERATIONS_SMALL),
80 new TestCase(WASTE_PCT_SMALL, OBJECT_SIZE_HIGH, GC_NUM_MEDIUM, ITERATIONS_HIGH),
81 new TestCase(WASTE_PCT_MEDIUM, OBJECT_SIZE_SMALL, GC_NUM_HIGH, ITERATIONS_MEDIUM),
82 new TestCase(WASTE_PCT_MEDIUM, OBJECT_SIZE_MEDIUM, GC_NUM_SMALL, ITERATIONS_SMALL),
83 new TestCase(WASTE_PCT_MEDIUM, OBJECT_SIZE_HIGH, GC_NUM_MEDIUM, ITERATIONS_HIGH),
84 new TestCase(WASTE_PCT_HIGH, OBJECT_SIZE_SMALL, GC_NUM_HIGH, ITERATIONS_MEDIUM),
85 new TestCase(WASTE_PCT_HIGH, OBJECT_SIZE_MEDIUM, GC_NUM_SMALL, ITERATIONS_SMALL),
86 new TestCase(WASTE_PCT_HIGH, OBJECT_SIZE_HIGH, GC_NUM_MEDIUM, ITERATIONS_HIGH)
87 };
88
89 private static final String[] PLAB_OPTIONS = {
90 "-XX:+ResizePLAB"
91 };
92
93 public static void main(String[] args) throws Throwable {
94 for (TestCase testCase : TEST_CASES) {
95 testCase.print(System.out);
96 List<String> options = PLABUtils.prepareOptions(PLAB_OPTIONS);
97 options.addAll(testCase.toOptions());
98 options.add(AppPLABResize.class.getName());
99 OutputAnalyzer out = ProcessTools.executeTestJvm(options.toArray(new String[options.size()]));
100 if (out.getExitValue() != 0) {
101 System.out.println(out.getOutput());
102 throw new RuntimeException("Exit code is not 0");
103 }
104 checkResults(out.getOutput(), testCase);
105 }
106 }
107
108 /**
109 * Checks testing results.
110 * Expected results - desired PLAB size is decreased and increased during promotion to Survivor.
111 *
112 * @param output - VM output
113 * @param testCase
114 */
115 private static void checkResults(String output, TestCase testCase) {
116 final LogParser log = new LogParser(output);
117 final List<Pair<LogParser.ReportType, ? extends Map<String, Long>>> entries = log.getEntries();
118 final ArrayList<Long> plabSizes = entries.stream()
119 .filter(p -> p.first == LogParser.ReportType.SURVIVOR_STATS)
120 .map(p -> p.second)
121 // We do not need first iterations - it is 'warm' phase of allocation.
122 .filter(mapEntries -> mapEntries.get(LogParser.GC_ID) > testCase.iterations)
123 .map(items -> items.get("desired_plab_sz"))
124 .collect(Collectors.toCollection(ArrayList::new));
125
126 if (plabSizes.isEmpty()) {
127 System.out.println(output);
128 throw new RuntimeException("Cannot find desired_plab_sz information for gc_id>" + testCase.iterations);
129 }
130
131 Long prev = plabSizes.get(0);
132 // Check that desired plab size is changed during iterations.
133 // It should decrease during first half of iterations
134 // and increase after.
135 for (int index = 1; index < plabSizes.size(); ++index) {
136 Long current = plabSizes.get(index);
137 if (index < testCase.getIterations()) {
138 if (prev < current) {
139 System.out.println(output);
140 throw new RuntimeException("Test failed! Expect that previout PLAB size should be less than current. Prev.size: " + prev + " Current size:" + current);
141 }
142 } else if (prev > current) {
143 System.out.println(output);
144 throw new RuntimeException("Test failed! Expect that previout PLAB size should be greater than current. Prev.size: " + prev + " Current size:" + current);
145 }
146 prev = current;
147 }
148 System.out.println("Test passed!");
149 }
150
151 /**
152 * Description of one test case.
153 */
154 private static class TestCase {
155
156 private final int wastePct;
157 private final int chunkSize;
158 private final int parGCThreads;
159 private final int iterations;
160
161 /**
162 * @param wastePct
163 * ParallelGCBufferWastePct
164 * @param chunkSize
165 * requested object size for memory consumption
166 * @param parGCThreads
167 * -XX:ParallelGCThreads
168 * @param iterations
169 *
170 */
171 public TestCase(int wastePct,
172 int chunkSize,
173 int parGCThreads,
174 int iterations
175 ) {
176 if (wastePct == 0 || chunkSize == 0 || parGCThreads == 0 || iterations == 0) {
177 throw new IllegalArgumentException("Parameters should not be 0");
178 }
179 this.wastePct = wastePct;
180
181 this.chunkSize = chunkSize;
182 this.parGCThreads = parGCThreads;
183 this.iterations = iterations;
184 }
185
186 /**
187 * Convert current TestCase to List of options.
188 *
189 * @return
190 * List of options
191 */
192 public List<String> toOptions() {
193 return Arrays.asList("-XX:ParallelGCThreads=" + parGCThreads,
194 "-XX:ParallelGCBufferWastePct=" + wastePct,
195 "-Dthreads=" + parGCThreads,
196 "-Dchunk.size=" + chunkSize,
197 "-Diterations=" + iterations,
198 "-XX:NewSize=16m",
199 "-XX:MaxNewSize=16m"
200 );
201 }
202
203 /**
204 * Print details about test case.
205 */
206 public void print(PrintStream out) {
207 out.println("Test case details:");
208 out.println(" Parallel GC buffer waste pct : " + wastePct);
209 out.println(" Chunk size : " + chunkSize);
210 out.println(" Parallel GC threads : " + parGCThreads);
211 out.println(" Iterations per one allocation part : " + iterations);
212 out.println(" All iteration of allocations : " + iterations * 3);
213 }
214
215 /**
216 * @return iterations
217 */
218 public int getIterations() {
219 return iterations;
220 }
221 }
222 }