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 8141141
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("actual");
121 })
122 .collect(Collectors.toCollection(ArrayList::new));
123
124 // Check that desired plab size was changed during iterations.
125 // The test case does 3 rounds of allocations. The second round of N allocations and GC's
126 // has a decreasing size of allocations so that iterations N to 2*N -1 will be of decreasing size.
127 // The third round with iterations 2*N to 3*N -1 has increasing sizes of allocation.
128 long startDesiredPLABSize = plabSizes.get(testCase.getIterations());
129 long endDesiredPLABSize = plabSizes.get(testCase.getIterations() * 2 - 1);
130
131 if (startDesiredPLABSize < endDesiredPLABSize) {
132 System.out.println(output);
133 throw new RuntimeException("Test failed! Expect that initial PLAB size should be greater than checked. Initial size: " + startDesiredPLABSize + " Checked size:" + endDesiredPLABSize);
134 }
135
136 startDesiredPLABSize = plabSizes.get(testCase.getIterations() * 2);
137 endDesiredPLABSize = plabSizes.get(testCase.getIterations() * 3 - 1);
138
139 if (startDesiredPLABSize > endDesiredPLABSize) {
140 System.out.println(output);
141 throw new RuntimeException("Test failed! Expect that initial PLAB size should be less than checked. Initial size: " + startDesiredPLABSize + " Checked size:" + endDesiredPLABSize);
142 }
143
144 System.out.println("Test passed!");
145 }
146
147 /**
148 * Description of one test case.
149 */
150 private static class TestCase {
151
152 private final int wastePct;
153 private final int chunkSize;
154 private final int parGCThreads;
155 private final int iterations;
156
157 /**
158 * @param wastePct
159 * ParallelGCBufferWastePct
160 * @param chunkSize
161 * requested object size for memory consumption
162 * @param parGCThreads
163 * -XX:ParallelGCThreads
164 * @param iterations
165 *
166 */
167 public TestCase(int wastePct,
168 int chunkSize,
169 int parGCThreads,
170 int iterations
171 ) {
172 if (wastePct == 0 || chunkSize == 0 || parGCThreads == 0 || iterations == 0) {
173 throw new IllegalArgumentException("Parameters should not be 0");
174 }
175 this.wastePct = wastePct;
176
177 this.chunkSize = chunkSize;
178 this.parGCThreads = parGCThreads;
179 this.iterations = iterations;
180 }
181
182 /**
183 * Convert current TestCase to List of options.
184 *
185 * @return
186 * List of options
187 */
188 public List<String> toOptions() {
189 return Arrays.asList("-XX:ParallelGCThreads=" + parGCThreads,
190 "-XX:ParallelGCBufferWastePct=" + wastePct,
191 "-XX:+ResizePLAB",
192 "-Dchunk.size=" + chunkSize,
193 "-Diterations=" + iterations,
194 "-XX:NewSize=16m",
195 "-XX:MaxNewSize=16m"
196 );
197 }
198
199 /**
200 * Print details about test case.
201 */
202 public void print(PrintStream out) {
203 out.println("Test case details:");
204 out.println(" Parallel GC buffer waste pct : " + wastePct);
205 out.println(" Chunk size : " + chunkSize);
206 out.println(" Parallel GC threads : " + parGCThreads);
207 out.println(" Iterations: " + iterations);
208 }
209
210 /**
211 * @return iterations
212 */
213 public int getIterations() {
214 return iterations;
215 }
216 }
217 }