1 /*
2 * Copyright (c) 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 TestPLABResize
26 * @bug 8141278
27 * @summary Test for PLAB resizing
28 * @requires vm.gc=="G1" | vm.gc=="null"
29 * @requires vm.opt.FlightRecorder != true
30 * @library /testlibrary /../../test/lib /
31 * @modules java.management
32 * @build ClassFileInstaller
33 * sun.hotspot.WhiteBox
34 * gc.g1.plab.lib.LogParser
35 * gc.g1.plab.lib.MemoryConsumer
36 * gc.g1.plab.lib.PLABUtils
37 * gc.g1.plab.lib.AppPLABResize
38 * @ignore 8150183
39 * @run main ClassFileInstaller sun.hotspot.WhiteBox
40 * sun.hotspot.WhiteBox$WhiteBoxPermission
41 * @run main gc.g1.plab.TestPLABResize
42 */
43 package gc.g1.plab;
44
45 import java.util.ArrayList;
46 import java.util.Arrays;
47 import java.util.List;
48 import java.util.Map;
49 import java.util.stream.Collectors;
50 import java.io.PrintStream;
51
52 import gc.g1.plab.lib.LogParser;
53 import gc.g1.plab.lib.PLABUtils;
54 import gc.g1.plab.lib.AppPLABResize;
55
56 import jdk.test.lib.OutputAnalyzer;
57 import jdk.test.lib.ProcessTools;
58
59 /**
60 * Test for PLAB resizing.
61 */
62 public class TestPLABResize {
63
64 private static final int OBJECT_SIZE_SMALL = 10;
65 private static final int OBJECT_SIZE_MEDIUM = 70;
66 private static final int OBJECT_SIZE_HIGH = 150;
67 private static final int GC_NUM_SMALL = 1;
68 private static final int GC_NUM_MEDIUM = 3;
69 private static final int GC_NUM_HIGH = 7;
70 private static final int WASTE_PCT_SMALL = 10;
71 private static final int WASTE_PCT_MEDIUM = 20;
72 private static final int WASTE_PCT_HIGH = 30;
73
74 private static final int ITERATIONS_SMALL = 3;
75 private static final int ITERATIONS_MEDIUM = 5;
76 private static final int ITERATIONS_HIGH = 8;
77
78 private final static TestCase[] TEST_CASES = {
79 new TestCase(WASTE_PCT_SMALL, OBJECT_SIZE_SMALL, GC_NUM_SMALL, ITERATIONS_MEDIUM),
80 new TestCase(WASTE_PCT_SMALL, OBJECT_SIZE_MEDIUM, GC_NUM_HIGH, ITERATIONS_SMALL),
81 new TestCase(WASTE_PCT_SMALL, OBJECT_SIZE_HIGH, GC_NUM_MEDIUM, ITERATIONS_HIGH),
82 new TestCase(WASTE_PCT_MEDIUM, OBJECT_SIZE_SMALL, GC_NUM_HIGH, ITERATIONS_MEDIUM),
83 new TestCase(WASTE_PCT_MEDIUM, OBJECT_SIZE_MEDIUM, GC_NUM_SMALL, ITERATIONS_SMALL),
84 new TestCase(WASTE_PCT_MEDIUM, OBJECT_SIZE_HIGH, GC_NUM_MEDIUM, ITERATIONS_HIGH),
85 new TestCase(WASTE_PCT_HIGH, OBJECT_SIZE_SMALL, GC_NUM_HIGH, ITERATIONS_MEDIUM),
86 new TestCase(WASTE_PCT_HIGH, OBJECT_SIZE_MEDIUM, GC_NUM_SMALL, ITERATIONS_SMALL),
87 new TestCase(WASTE_PCT_HIGH, OBJECT_SIZE_HIGH, GC_NUM_MEDIUM, ITERATIONS_HIGH)
88 };
89
90 public static void main(String[] args) throws Throwable {
91 for (TestCase testCase : TEST_CASES) {
92 testCase.print(System.out);
93 List<String> options = PLABUtils.prepareOptions(testCase.toOptions());
94 options.add(AppPLABResize.class.getName());
95 OutputAnalyzer out = ProcessTools.executeTestJvm(options.toArray(new String[options.size()]));
96 if (out.getExitValue() != 0) {
97 System.out.println(out.getOutput());
98 throw new RuntimeException("Exit code is not 0");
99 }
100 checkResults(out.getOutput(), testCase);
101 }
102 }
103
104 /**
105 * Checks testing results.
106 * Expected results - desired PLAB size is decreased and increased during promotion to Survivor.
107 *
108 * @param output - VM output
109 * @param testCase
110 */
111 private static void checkResults(String output, TestCase testCase) {
112 final LogParser log = new LogParser(output);
113 final Map<Long, Map<LogParser.ReportType, Map<String, Long>>> entries = log.getEntries();
114
115 final ArrayList<Long> plabSizes = entries.entrySet()
116 .stream()
117 .map(item -> {
118 return item.getValue()
119 .get(LogParser.ReportType.SURVIVOR_STATS)
120 .get("desired_plab_sz");
121 })
122 .collect(Collectors.toCollection(ArrayList::new));
123
124 // Check that desired plab size was changed during iterations.
125 // It should decrease during first half of iterations
126 // and increase after.
127 List<Long> decreasedPlabs = plabSizes.subList(testCase.getIterations(), testCase.getIterations() * 2);
128 List<Long> increasedPlabs = plabSizes.subList(testCase.getIterations() * 2, testCase.getIterations() * 3);
129
130 Long prev = decreasedPlabs.get(0);
131 for (int index = 1; index < decreasedPlabs.size(); ++index) {
132 Long current = decreasedPlabs.get(index);
133 if (prev < current) {
134 System.out.println(output);
135 throw new RuntimeException("Test failed! Expect that previous PLAB size should be greater than current. Prev.size: " + prev + " Current size:" + current);
136 }
137 prev = current;
138 }
139
140 prev = increasedPlabs.get(0);
141 for (int index = 1; index < increasedPlabs.size(); ++index) {
142 Long current = increasedPlabs.get(index);
143 if (prev > current) {
144 System.out.println(output);
145 throw new RuntimeException("Test failed! Expect that previous PLAB size should be less than current. Prev.size: " + prev + " Current size:" + current);
146 }
147 prev = current;
148 }
149
150 System.out.println("Test passed!");
151 }
152
153 /**
154 * Description of one test case.
155 */
156 private static class TestCase {
157
158 private final int wastePct;
159 private final int chunkSize;
160 private final int parGCThreads;
161 private final int iterations;
162
163 /**
164 * @param wastePct
165 * ParallelGCBufferWastePct
166 * @param chunkSize
167 * requested object size for memory consumption
168 * @param parGCThreads
169 * -XX:ParallelGCThreads
170 * @param iterations
171 *
172 */
173 public TestCase(int wastePct,
174 int chunkSize,
175 int parGCThreads,
176 int iterations
177 ) {
178 if (wastePct == 0 || chunkSize == 0 || parGCThreads == 0 || iterations == 0) {
179 throw new IllegalArgumentException("Parameters should not be 0");
180 }
181 this.wastePct = wastePct;
182
183 this.chunkSize = chunkSize;
184 this.parGCThreads = parGCThreads;
185 this.iterations = iterations;
186 }
187
188 /**
189 * Convert current TestCase to List of options.
190 *
191 * @return
192 * List of options
193 */
194 public List<String> toOptions() {
195 return Arrays.asList("-XX:ParallelGCThreads=" + parGCThreads,
196 "-XX:ParallelGCBufferWastePct=" + wastePct,
197 "-XX:+ResizePLAB",
198 "-Dthreads=" + parGCThreads,
199 "-Dchunk.size=" + chunkSize,
200 "-Diterations=" + iterations,
201 "-XX:NewSize=16m",
202 "-XX:MaxNewSize=16m"
203 );
204 }
205
206 /**
207 * Print details about test case.
208 */
209 public void print(PrintStream out) {
210 out.println("Test case details:");
211 out.println(" Parallel GC buffer waste pct : " + wastePct);
212 out.println(" Chunk size : " + chunkSize);
213 out.println(" Parallel GC threads : " + parGCThreads);
214 out.println(" Iterations: " + iterations);
215 }
216
217 /**
218 * @return iterations
219 */
220 public int getIterations() {
221 return iterations;
222 }
223 }
224 }