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G1: Use SoftMaxHeapSize to guide GC heuristics
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--- old/test/hotspot/jtreg/gc/g1/TestGCLogMessages.java
+++ new/test/hotspot/jtreg/gc/g1/TestGCLogMessages.java
1 1 /*
2 2 * Copyright (c) 2014, 2020, Oracle and/or its affiliates. All rights reserved.
3 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 4 *
5 5 * This code is free software; you can redistribute it and/or modify it
6 6 * under the terms of the GNU General Public License version 2 only, as
7 7 * published by the Free Software Foundation.
8 8 *
9 9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 12 * version 2 for more details (a copy is included in the LICENSE file that
13 13 * accompanied this code).
14 14 *
15 15 * You should have received a copy of the GNU General Public License version
16 16 * 2 along with this work; if not, write to the Free Software Foundation,
17 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 18 *
19 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 20 * or visit www.oracle.com if you need additional information or have any
21 21 * questions.
22 22 */
23 23
24 24 package gc.g1;
25 25
26 26 /*
27 27 * @test TestGCLogMessages
28 28 * @bug 8035406 8027295 8035398 8019342 8027959 8048179 8027962 8069330 8076463 8150630 8160055 8177059 8166191
29 29 * @summary Ensure the output for a minor GC with G1
30 30 * includes the expected necessary messages.
31 31 * @key gc
32 32 * @requires vm.gc.G1
33 33 * @library /test/lib
34 34 * @modules java.base/jdk.internal.misc
35 35 * java.management
36 36 * @build sun.hotspot.WhiteBox
37 37 * @run driver ClassFileInstaller sun.hotspot.WhiteBox
38 38 * sun.hotspot.WhiteBox$WhiteBoxPermission
39 39 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
40 40 * gc.g1.TestGCLogMessages
41 41 */
42 42
43 43 import jdk.test.lib.process.OutputAnalyzer;
44 44 import jdk.test.lib.process.ProcessTools;
45 45 import sun.hotspot.code.Compiler;
46 46
47 47 public class TestGCLogMessages {
48 48
49 49 private enum Level {
50 50 OFF(""),
51 51 INFO("info"),
52 52 DEBUG("debug"),
53 53 TRACE("trace");
54 54
55 55 private String logName;
56 56
57 57 Level(String logName) {
58 58 this.logName = logName;
59 59 }
60 60
61 61 public boolean lessThan(Level other) {
62 62 return this.compareTo(other) < 0;
63 63 }
64 64
65 65 public String toString() {
66 66 return logName;
67 67 }
68 68 }
69 69
70 70 private class LogMessageWithLevel {
71 71 String message;
72 72 Level level;
73 73
74 74 public LogMessageWithLevel(String message, Level level) {
75 75 this.message = message;
76 76 this.level = level;
77 77 }
78 78
79 79 public boolean isAvailable() {
80 80 return true;
81 81 }
82 82 };
83 83
84 84 private class LogMessageWithLevelC2OrJVMCIOnly extends LogMessageWithLevel {
85 85 public LogMessageWithLevelC2OrJVMCIOnly(String message, Level level) {
86 86 super(message, level);
87 87 }
88 88
89 89 public boolean isAvailable() {
90 90 return Compiler.isC2OrJVMCIIncludedInVmBuild();
91 91 }
92 92 }
93 93
94 94 private LogMessageWithLevel allLogMessages[] = new LogMessageWithLevel[] {
95 95 new LogMessageWithLevel("Pre Evacuate Collection Set", Level.INFO),
96 96 new LogMessageWithLevel("Evacuate Collection Set", Level.INFO),
97 97 new LogMessageWithLevel("Post Evacuate Collection Set", Level.INFO),
98 98 new LogMessageWithLevel("Other", Level.INFO),
99 99
100 100 // Merge Heap Roots
101 101 new LogMessageWithLevel("Merge Heap Roots", Level.INFO),
102 102 new LogMessageWithLevel("Prepare Merge Heap Roots", Level.DEBUG),
103 103 new LogMessageWithLevel("Eager Reclaim", Level.DEBUG),
104 104 new LogMessageWithLevel("Remembered Sets", Level.DEBUG),
105 105 new LogMessageWithLevel("Merged Sparse", Level.DEBUG),
106 106 new LogMessageWithLevel("Merged Fine", Level.DEBUG),
107 107 new LogMessageWithLevel("Merged Coarse", Level.DEBUG),
108 108 new LogMessageWithLevel("Hot Card Cache", Level.DEBUG),
109 109 new LogMessageWithLevel("Log Buffers", Level.DEBUG),
110 110 new LogMessageWithLevel("Dirty Cards", Level.DEBUG),
111 111 new LogMessageWithLevel("Skipped Cards", Level.DEBUG),
112 112 // Scan Heap Roots
113 113 new LogMessageWithLevel("Scan Heap Roots", Level.DEBUG),
114 114 new LogMessageWithLevel("Scanned Cards", Level.DEBUG),
115 115 new LogMessageWithLevel("Scanned Blocks", Level.DEBUG),
116 116 new LogMessageWithLevel("Claimed Chunks", Level.DEBUG),
117 117 // Code Roots Scan
118 118 new LogMessageWithLevel("Code Root Scan", Level.DEBUG),
119 119 // Object Copy
120 120 new LogMessageWithLevel("Object Copy", Level.DEBUG),
121 121 new LogMessageWithLevel("Copied Bytes", Level.DEBUG),
122 122 new LogMessageWithLevel("LAB Waste", Level.DEBUG),
123 123 new LogMessageWithLevel("LAB Undo Waste", Level.DEBUG),
124 124 // Ext Root Scan
125 125 new LogMessageWithLevel("Thread Roots", Level.TRACE),
126 126 new LogMessageWithLevel("Universe Roots", Level.TRACE),
127 127 new LogMessageWithLevel("JNI Handles Roots", Level.TRACE),
128 128 new LogMessageWithLevel("ObjectSynchronizer Roots", Level.TRACE),
129 129 new LogMessageWithLevel("Management Roots", Level.TRACE),
130 130 new LogMessageWithLevel("SystemDictionary Roots", Level.TRACE),
131 131 new LogMessageWithLevel("CLDG Roots", Level.TRACE),
132 132 new LogMessageWithLevel("JVMTI Roots", Level.TRACE),
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133 133 new LogMessageWithLevel("CM RefProcessor Roots", Level.TRACE),
134 134 // Redirty Cards
135 135 new LogMessageWithLevel("Redirty Cards", Level.DEBUG),
136 136 new LogMessageWithLevel("Parallel Redirty", Level.TRACE),
137 137 new LogMessageWithLevel("Redirtied Cards", Level.TRACE),
138 138 // Misc Top-level
139 139 new LogMessageWithLevel("Code Roots Purge", Level.DEBUG),
140 140 new LogMessageWithLevel("String Deduplication", Level.DEBUG),
141 141 new LogMessageWithLevel("Queue Fixup", Level.DEBUG),
142 142 new LogMessageWithLevel("Table Fixup", Level.DEBUG),
143 - new LogMessageWithLevel("Expand Heap After Collection", Level.DEBUG),
143 + new LogMessageWithLevel("Resize Heap After Collection", Level.DEBUG),
144 144 new LogMessageWithLevel("Region Register", Level.DEBUG),
145 145 new LogMessageWithLevel("Prepare Heap Roots", Level.DEBUG),
146 146 // Free CSet
147 147 new LogMessageWithLevel("Free Collection Set", Level.DEBUG),
148 148 new LogMessageWithLevel("Serial Free Collection Set", Level.TRACE),
149 149 new LogMessageWithLevel("Parallel Free Collection Set", Level.TRACE),
150 150 new LogMessageWithLevel("Young Free Collection Set", Level.TRACE),
151 151 new LogMessageWithLevel("Non-Young Free Collection Set", Level.TRACE),
152 152 // Rebuild Free List
153 153 new LogMessageWithLevel("Rebuild Free List", Level.DEBUG),
154 154 new LogMessageWithLevel("Serial Rebuild Free List", Level.TRACE),
155 155 new LogMessageWithLevel("Parallel Rebuild Free List", Level.TRACE),
156 156
157 157 // Humongous Eager Reclaim
158 158 new LogMessageWithLevel("Humongous Reclaim", Level.DEBUG),
159 159 // Merge PSS
160 160 new LogMessageWithLevel("Merge Per-Thread State", Level.DEBUG),
161 161 // TLAB handling
162 162 new LogMessageWithLevel("Prepare TLABs", Level.DEBUG),
163 163 new LogMessageWithLevel("Resize TLABs", Level.DEBUG),
164 164 // Reference Processing
165 165 new LogMessageWithLevel("Reference Processing", Level.DEBUG),
166 166 // VM internal reference processing
167 167 new LogMessageWithLevel("Weak Processing", Level.DEBUG),
168 168 new LogMessageWithLevel("JNI weak", Level.DEBUG),
169 169 new LogMessageWithLevel("StringTable weak", Level.DEBUG),
170 170 new LogMessageWithLevel("ResolvedMethodTable weak", Level.DEBUG),
171 171 new LogMessageWithLevel("VM weak", Level.DEBUG),
172 172
173 173 new LogMessageWithLevelC2OrJVMCIOnly("DerivedPointerTable Update", Level.DEBUG),
174 174 new LogMessageWithLevel("Start New Collection Set", Level.DEBUG),
175 175 };
176 176
177 177 void checkMessagesAtLevel(OutputAnalyzer output, LogMessageWithLevel messages[], Level level) throws Exception {
178 178 for (LogMessageWithLevel l : messages) {
179 179 if (level.lessThan(l.level) || !l.isAvailable()) {
180 180 output.shouldNotContain(l.message);
181 181 } else {
182 182 output.shouldMatch("\\[" + l.level + ".*" + l.message);
183 183 }
184 184 }
185 185 }
186 186
187 187 public static void main(String[] args) throws Exception {
188 188 new TestGCLogMessages().testNormalLogs();
189 189 new TestGCLogMessages().testWithToSpaceExhaustionLogs();
190 190 new TestGCLogMessages().testWithInitialMark();
191 191 new TestGCLogMessages().testExpandHeap();
192 192 }
193 193
194 194 private void testNormalLogs() throws Exception {
195 195
196 196 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
197 197 "-Xmx10M",
198 198 GCTest.class.getName());
199 199
200 200 OutputAnalyzer output = new OutputAnalyzer(pb.start());
201 201 checkMessagesAtLevel(output, allLogMessages, Level.OFF);
202 202 output.shouldHaveExitValue(0);
203 203
204 204 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
205 205 "-XX:+UseStringDeduplication",
206 206 "-Xmx10M",
207 207 "-Xlog:gc+phases=debug",
208 208 GCTest.class.getName());
209 209
210 210 output = new OutputAnalyzer(pb.start());
211 211 checkMessagesAtLevel(output, allLogMessages, Level.DEBUG);
212 212
213 213 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
214 214 "-XX:+UseStringDeduplication",
215 215 "-Xmx10M",
216 216 "-Xlog:gc+phases=trace",
217 217 GCTest.class.getName());
218 218
219 219 output = new OutputAnalyzer(pb.start());
220 220 checkMessagesAtLevel(output, allLogMessages, Level.TRACE);
221 221 output.shouldHaveExitValue(0);
222 222 }
223 223
224 224 LogMessageWithLevel exhFailureMessages[] = new LogMessageWithLevel[] {
225 225 new LogMessageWithLevel("Evacuation Failure", Level.DEBUG),
226 226 new LogMessageWithLevel("Recalculate Used", Level.TRACE),
227 227 new LogMessageWithLevel("Remove Self Forwards", Level.TRACE),
228 228 };
229 229
230 230 private void testWithToSpaceExhaustionLogs() throws Exception {
231 231 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
232 232 "-Xmx32M",
233 233 "-Xmn16M",
234 234 "-Xlog:gc+phases=debug",
235 235 GCTestWithToSpaceExhaustion.class.getName());
236 236
237 237 OutputAnalyzer output = new OutputAnalyzer(pb.start());
238 238 checkMessagesAtLevel(output, exhFailureMessages, Level.DEBUG);
239 239 output.shouldHaveExitValue(0);
240 240
241 241 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
242 242 "-Xmx32M",
243 243 "-Xmn16M",
244 244 "-Xlog:gc+phases=trace",
245 245 GCTestWithToSpaceExhaustion.class.getName());
246 246
247 247 output = new OutputAnalyzer(pb.start());
248 248 checkMessagesAtLevel(output, exhFailureMessages, Level.TRACE);
249 249 output.shouldHaveExitValue(0);
250 250 }
251 251
252 252 private void testWithInitialMark() throws Exception {
253 253 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
254 254 "-Xmx10M",
255 255 "-Xbootclasspath/a:.",
256 256 "-Xlog:gc*=debug",
257 257 "-XX:+UnlockDiagnosticVMOptions",
258 258 "-XX:+WhiteBoxAPI",
259 259 GCTestWithInitialMark.class.getName());
260 260
261 261 OutputAnalyzer output = new OutputAnalyzer(pb.start());
262 262 output.shouldContain("Clear Claimed Marks");
263 263 output.shouldHaveExitValue(0);
264 264 }
265 265
266 266 private void testExpandHeap() throws Exception {
267 267 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
268 268 "-Xmx10M",
269 269 "-Xbootclasspath/a:.",
270 270 "-Xlog:gc+ergo+heap=debug",
271 271 "-XX:+UnlockDiagnosticVMOptions",
272 272 "-XX:+WhiteBoxAPI",
273 273 GCTest.class.getName());
274 274
275 275 OutputAnalyzer output = new OutputAnalyzer(pb.start());
276 276 output.shouldContain("Expand the heap. requested expansion amount: ");
277 277 output.shouldContain("B expansion amount: ");
278 278 output.shouldHaveExitValue(0);
279 279 }
280 280
281 281
282 282 static class GCTest {
283 283 private static byte[] garbage;
284 284 public static void main(String [] args) {
285 285 System.out.println("Creating garbage");
286 286 // create 128MB of garbage. This should result in at least one GC
287 287 for (int i = 0; i < 1024; i++) {
288 288 garbage = new byte[128 * 1024];
289 289 }
290 290 System.out.println("Done");
291 291 }
292 292 }
293 293
294 294 static class GCTestWithToSpaceExhaustion {
295 295 private static byte[] garbage;
296 296 private static byte[] largeObject;
297 297 public static void main(String [] args) {
298 298 largeObject = new byte[16*1024*1024];
299 299 System.out.println("Creating garbage");
300 300 // create 128MB of garbage. This should result in at least one GC,
301 301 // some of them with to-space exhaustion.
302 302 for (int i = 0; i < 1024; i++) {
303 303 garbage = new byte[128 * 1024];
304 304 }
305 305 System.out.println("Done");
306 306 }
307 307 }
308 308
309 309 static class GCTestWithInitialMark {
310 310 public static void main(String [] args) {
311 311 sun.hotspot.WhiteBox WB = sun.hotspot.WhiteBox.getWhiteBox();
312 312 WB.g1StartConcMarkCycle();
313 313 }
314 314 }
315 315
316 316 }
317 317
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