1 /*
2 * Copyright (c) 2018, 2019, 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 package jdk.test.lib.containers.cgroup;
25
26 import java.io.File;
27 import java.io.FileNotFoundException;
28 import java.io.IOException;
29 import java.nio.file.Files;
30 import java.nio.file.Path;
31 import java.nio.file.Paths;
32 import java.util.Arrays;
33 import java.util.HashMap;
34 import java.util.Map;
35 import java.util.Scanner;
36 import java.util.Set;
37 import java.util.stream.Collectors;
38 import java.util.stream.LongStream;
39 import java.util.stream.Stream;
40
41 import jdk.internal.platform.Metrics;
42
43 public class MetricsTesterCgroupV1 implements CgroupMetricsTester {
44
45 private static long unlimited_minimum = 0x7FFFFFFFFF000000L;
46 long startSysVal;
47 long startUserVal;
48 long startUsage;
49 long startPerCpu[];
50
51 enum Controller {
52 MEMORY("memory"),
53 CPUSET("cpuset"),
54 CPU("cpu"),
55 CPUACCT("cpuacct"),
56 BLKIO("blkio");
57
58 private String value;
59
60 Controller(String value) {
61 this.value = value;
62 }
63
64 public String value() {
65 return value;
66 }
67 }
68
69 private static final Set<String> allowedSubSystems =
70 Stream.of(Controller.values()).map(Controller::value).collect(Collectors.toSet());
71
72 private static final Map<String, String[]> subSystemPaths = new HashMap<>();
73
74 private static void setPath(String[] line) {
75 String cgroupPath = line[2];
76 String[] subSystems = line[1].split(",");
77
78 for (String subSystem : subSystems) {
79 if (allowedSubSystems.contains(subSystem)) {
80 String[] paths = subSystemPaths.get(subSystem);
81 String finalPath = "";
82 String root = paths[0];
83 String mountPoint = paths[1];
84 if (root != null && cgroupPath != null) {
85 if (root.equals("/")) {
86 if (!cgroupPath.equals("/")) {
87 finalPath = mountPoint + cgroupPath;
88 } else {
89 finalPath = mountPoint;
90 }
91 } else {
92 if (root.equals(cgroupPath)) {
93 finalPath = mountPoint;
94 } else {
95 if (cgroupPath.startsWith(root)) {
96 if (cgroupPath.length() > root.length()) {
97 String cgroupSubstr = cgroupPath.substring(root.length());
98 finalPath = mountPoint + cgroupSubstr;
99 }
100 }
101 }
102 }
103 }
104 subSystemPaths.put(subSystem, new String[]{finalPath, mountPoint});
105 }
106 }
107 }
108
109 private static void createSubsystems(String[] line) {
110 if (line.length < 5) return;
111 Path p = Paths.get(line[4]);
112 String subsystemName = p.getFileName().toString();
113 if (subsystemName != null) {
114 for (String subSystem : subsystemName.split(",")) {
115 if (allowedSubSystems.contains(subSystem)) {
116 subSystemPaths.put(subSystem, new String[]{line[3], line[4]});
117 }
118 }
119 }
120 }
121
122 public void setup() {
123 Metrics metrics = Metrics.systemMetrics();
124 // Initialize CPU usage metrics before we do any testing.
125 startSysVal = metrics.getCpuSystemUsage();
126 startUserVal = metrics.getCpuUserUsage();
127 startUsage = metrics.getCpuUsage();
128 startPerCpu = metrics.getPerCpuUsage();
129
130 try {
131 Stream<String> lines = Files.lines(Paths.get("/proc/self/mountinfo"));
132 lines.filter(line -> line.contains(" - cgroup cgroup "))
133 .map(line -> line.split(" "))
134 .forEach(MetricsTesterCgroupV1::createSubsystems);
135 lines.close();
136
137 lines = Files.lines(Paths.get("/proc/self/cgroup"));
138 lines.map(line -> line.split(":"))
139 .filter(line -> (line.length >= 3))
140 .forEach(MetricsTesterCgroupV1::setPath);
141 lines.close();
142 } catch (IOException e) {
143 }
144 }
145
146 private static String getFileContents(Controller subSystem, String fileName) {
147 String fname = subSystemPaths.get(subSystem.value())[0] + File.separator + fileName;
148 try {
149 return new Scanner(new File(fname)).useDelimiter("\\Z").next();
150 } catch (FileNotFoundException e) {
151 System.err.println("Unable to open : " + fname);
152 return "";
153 }
154 }
155
156 private static long getLongValueFromFile(Controller subSystem, String fileName) {
157 String data = getFileContents(subSystem, fileName);
158 return data.isEmpty() ? 0L : convertStringToLong(data);
159 }
160
161 private static long convertStringToLong(String strval) {
162 return CgroupMetricsTester.convertStringToLong(strval, Long.MAX_VALUE);
163 }
164
165 private static long getLongValueFromFile(Controller subSystem, String metric, String subMetric) {
166 String stats = getFileContents(subSystem, metric);
167 String[] tokens = stats.split("[\\r\\n]+");
168 for (int i = 0; i < tokens.length; i++) {
169 if (tokens[i].startsWith(subMetric)) {
170 String strval = tokens[i].split("\\s+")[1];
171 return convertStringToLong(strval);
172 }
173 }
174 return 0L;
175 }
176
177 private static double getDoubleValueFromFile(Controller subSystem, String fileName) {
178 String data = getFileContents(subSystem, fileName);
179 return data.isEmpty() ? 0.0 : Double.parseDouble(data);
180 }
181
182 private static void fail(Controller system, String metric, long oldVal, long testVal) {
183 CgroupMetricsTester.fail(system.value, metric, oldVal, testVal);
184 }
185
186 private static void fail(Controller system, String metric, String oldVal, String testVal) {
187 CgroupMetricsTester.fail(system.value, metric, oldVal, testVal);
188 }
189
190 private static void fail(Controller system, String metric, double oldVal, double testVal) {
191 CgroupMetricsTester.fail(system.value, metric, oldVal, testVal);
192 }
193
194 private static void fail(Controller system, String metric, boolean oldVal, boolean testVal) {
195 CgroupMetricsTester.fail(system.value, metric, oldVal, testVal);
196 }
197
198 private static void warn(Controller system, String metric, long oldVal, long testVal) {
199 CgroupMetricsTester.warn(system.value, metric, oldVal, testVal);
200 }
201
202 public void testMemorySubsystem() {
203 Metrics metrics = Metrics.systemMetrics();
204
205 // User Memory
206 long oldVal = metrics.getMemoryFailCount();
207 long newVal = getLongValueFromFile(Controller.MEMORY, "memory.failcnt");
208 if (!CgroupMetricsTester.compareWithErrorMargin(oldVal, newVal)) {
209 fail(Controller.MEMORY, "memory.failcnt", oldVal, newVal);
210 }
211
212 oldVal = metrics.getMemoryLimit();
213 newVal = getLongValueFromFile(Controller.MEMORY, "memory.limit_in_bytes");
214 newVal = newVal > unlimited_minimum ? -1L : newVal;
215 if (!CgroupMetricsTester.compareWithErrorMargin(oldVal, newVal)) {
216 fail(Controller.MEMORY, "memory.limit_in_bytes", oldVal, newVal);
217 }
218
219 oldVal = metrics.getMemoryMaxUsage();
220 newVal = getLongValueFromFile(Controller.MEMORY, "memory.max_usage_in_bytes");
221 if (!CgroupMetricsTester.compareWithErrorMargin(oldVal, newVal)) {
222 fail(Controller.MEMORY, "memory.max_usage_in_bytes", oldVal, newVal);
223 }
224
225 oldVal = metrics.getMemoryUsage();
226 newVal = getLongValueFromFile(Controller.MEMORY, "memory.usage_in_bytes");
227 if (!CgroupMetricsTester.compareWithErrorMargin(oldVal, newVal)) {
228 fail(Controller.MEMORY, "memory.usage_in_bytes", oldVal, newVal);
229 }
230
231 // Kernel memory
232 oldVal = metrics.getKernelMemoryFailCount();
233 newVal = getLongValueFromFile(Controller.MEMORY, "memory.kmem.failcnt");
234 if (!CgroupMetricsTester.compareWithErrorMargin(oldVal, newVal)) {
235 fail(Controller.MEMORY, "memory.kmem.failcnt", oldVal, newVal);
236 }
237
238 oldVal = metrics.getKernelMemoryLimit();
239 newVal = getLongValueFromFile(Controller.MEMORY, "memory.kmem.limit_in_bytes");
240 newVal = newVal > unlimited_minimum ? -1L : newVal;
241 if (!CgroupMetricsTester.compareWithErrorMargin(oldVal, newVal)) {
242 fail(Controller.MEMORY, "memory.kmem.limit_in_bytes", oldVal, newVal);
243 }
244
245 oldVal = metrics.getKernelMemoryMaxUsage();
246 newVal = getLongValueFromFile(Controller.MEMORY, "memory.kmem.max_usage_in_bytes");
247 if (!CgroupMetricsTester.compareWithErrorMargin(oldVal, newVal)) {
248 fail(Controller.MEMORY, "memory.kmem.max_usage_in_bytes", oldVal, newVal);
249 }
250
251 oldVal = metrics.getKernelMemoryUsage();
252 newVal = getLongValueFromFile(Controller.MEMORY, "memory.kmem.usage_in_bytes");
253 if (!CgroupMetricsTester.compareWithErrorMargin(oldVal, newVal)) {
254 fail(Controller.MEMORY, "memory.kmem.usage_in_bytes", oldVal, newVal);
255 }
256
257 //TCP Memory
258 oldVal = metrics.getTcpMemoryFailCount();
259 newVal = getLongValueFromFile(Controller.MEMORY, "memory.kmem.tcp.failcnt");
260 if (!CgroupMetricsTester.compareWithErrorMargin(oldVal, newVal)) {
261 fail(Controller.MEMORY, "memory.kmem.tcp.failcnt", oldVal, newVal);
262 }
263
264 oldVal = metrics.getTcpMemoryLimit();
265 newVal = getLongValueFromFile(Controller.MEMORY, "memory.kmem.tcp.limit_in_bytes");
266 newVal = newVal > unlimited_minimum ? -1L : newVal;
267 if (!CgroupMetricsTester.compareWithErrorMargin(oldVal, newVal)) {
268 fail(Controller.MEMORY, "memory.kmem.tcp.limit_in_bytes", oldVal, newVal);
269 }
270
271 oldVal = metrics.getTcpMemoryMaxUsage();
272 newVal = getLongValueFromFile(Controller.MEMORY, "memory.kmem.tcp.max_usage_in_bytes");
273 if (!CgroupMetricsTester.compareWithErrorMargin(oldVal, newVal)) {
274 fail(Controller.MEMORY, "memory.kmem.tcp.max_usage_in_bytes", oldVal, newVal);
275 }
276
277 oldVal = metrics.getTcpMemoryUsage();
278 newVal = getLongValueFromFile(Controller.MEMORY, "memory.kmem.tcp.usage_in_bytes");
279 if (!CgroupMetricsTester.compareWithErrorMargin(oldVal, newVal)) {
280 fail(Controller.MEMORY, "memory.kmem.tcp.usage_in_bytes", oldVal, newVal);
281 }
282
283 // Memory and Swap
284 oldVal = metrics.getMemoryAndSwapFailCount();
285 newVal = getLongValueFromFile(Controller.MEMORY, "memory.memsw.failcnt");
286 if (!CgroupMetricsTester.compareWithErrorMargin(oldVal, newVal)) {
287 fail(Controller.MEMORY, "memory.memsw.failcnt", oldVal, newVal);
288 }
289
290 oldVal = metrics.getMemoryAndSwapLimit();
291 newVal = getLongValueFromFile(Controller.MEMORY, "memory.memsw.limit_in_bytes");
292 newVal = newVal > unlimited_minimum ? -1L : newVal;
293 if (!CgroupMetricsTester.compareWithErrorMargin(oldVal, newVal)) {
294 fail(Controller.MEMORY, "memory.memsw.limit_in_bytes", oldVal, newVal);
295 }
296
297 oldVal = metrics.getMemoryAndSwapMaxUsage();
298 newVal = getLongValueFromFile(Controller.MEMORY, "memory.memsw.max_usage_in_bytes");
299 if (!CgroupMetricsTester.compareWithErrorMargin(oldVal, newVal)) {
300 fail(Controller.MEMORY, "memory.memsw.max_usage_in_bytes", oldVal, newVal);
301 }
302
303 oldVal = metrics.getMemoryAndSwapUsage();
304 newVal = getLongValueFromFile(Controller.MEMORY, "memory.memsw.usage_in_bytes");
305 if (!CgroupMetricsTester.compareWithErrorMargin(oldVal, newVal)) {
306 fail(Controller.MEMORY, "memory.memsw.usage_in_bytes", oldVal, newVal);
307 }
308
309 oldVal = metrics.getMemorySoftLimit();
310 newVal = getLongValueFromFile(Controller.MEMORY, "memory.soft_limit_in_bytes");
311 newVal = newVal > unlimited_minimum ? -1L : newVal;
312 if (!CgroupMetricsTester.compareWithErrorMargin(oldVal, newVal)) {
313 fail(Controller.MEMORY, "memory.soft_limit_in_bytes", oldVal, newVal);
314 }
315
316 boolean oomKillEnabled = metrics.isMemoryOOMKillEnabled();
317 boolean newOomKillEnabled = getLongValueFromFile(Controller.MEMORY,
318 "memory.oom_control", "oom_kill_disable") == 0L ? true : false;
319 if (oomKillEnabled != newOomKillEnabled) {
320 throw new RuntimeException("Test failed for - " + Controller.MEMORY.value + ":"
321 + "memory.oom_control:oom_kill_disable" + ", expected ["
322 + oomKillEnabled + "], got [" + newOomKillEnabled + "]");
323 }
324 }
325
326 public void testCpuAccounting() {
327 Metrics metrics = Metrics.systemMetrics();
328 long oldVal = metrics.getCpuUsage();
329 long newVal = getLongValueFromFile(Controller.CPUACCT, "cpuacct.usage");
330
331 if (!CgroupMetricsTester.compareWithErrorMargin(oldVal, newVal)) {
332 warn(Controller.CPUACCT, "cpuacct.usage", oldVal, newVal);
333 }
334
335 Long[] newVals = Stream.of(getFileContents(Controller.CPUACCT, "cpuacct.usage_percpu")
336 .split("\\s+"))
337 .map(Long::parseLong)
338 .toArray(Long[]::new);
339 Long[] oldVals = LongStream.of(metrics.getPerCpuUsage()).boxed().toArray(Long[]::new);
340 for (int i = 0; i < oldVals.length; i++) {
341 if (!CgroupMetricsTester.compareWithErrorMargin(oldVals[i], newVals[i])) {
342 warn(Controller.CPUACCT, "cpuacct.usage_percpu", oldVals[i], newVals[i]);
343 }
344 }
345
346 oldVal = metrics.getCpuUserUsage();
347 newVal = getLongValueFromFile(Controller.CPUACCT, "cpuacct.stat", "user");
348 if (!CgroupMetricsTester.compareWithErrorMargin(oldVal, newVal)) {
349 warn(Controller.CPUACCT, "cpuacct.usage - user", oldVal, newVal);
350 }
351
352 oldVal = metrics.getCpuSystemUsage();
353 newVal = getLongValueFromFile(Controller.CPUACCT, "cpuacct.stat", "system");
354 if (!CgroupMetricsTester.compareWithErrorMargin(oldVal, newVal)) {
355 warn(Controller.CPUACCT, "cpuacct.usage - system", oldVal, newVal);
356 }
357 }
358
359 public void testCpuSchedulingMetrics() {
360 Metrics metrics = Metrics.systemMetrics();
361 long oldVal = metrics.getCpuPeriod();
362 long newVal = getLongValueFromFile(Controller.CPUACCT, "cpu.cfs_period_us");
363 if (!CgroupMetricsTester.compareWithErrorMargin(oldVal, newVal)) {
364 fail(Controller.CPUACCT, "cpu.cfs_period_us", oldVal, newVal);
365 }
366
367 oldVal = metrics.getCpuQuota();
368 newVal = getLongValueFromFile(Controller.CPUACCT, "cpu.cfs_quota_us");
369 if (!CgroupMetricsTester.compareWithErrorMargin(oldVal, newVal)) {
370 fail(Controller.CPUACCT, "cpu.cfs_quota_us", oldVal, newVal);
371 }
372
373 oldVal = metrics.getCpuShares();
374 newVal = getLongValueFromFile(Controller.CPUACCT, "cpu.shares");
375 if (newVal == 0 || newVal == 1024) newVal = -1;
376 if (!CgroupMetricsTester.compareWithErrorMargin(oldVal, newVal)) {
377 fail(Controller.CPUACCT, "cpu.shares", oldVal, newVal);
378 }
379
380 oldVal = metrics.getCpuNumPeriods();
381 newVal = getLongValueFromFile(Controller.CPUACCT, "cpu.stat", "nr_periods");
382 if (!CgroupMetricsTester.compareWithErrorMargin(oldVal, newVal)) {
383 fail(Controller.CPUACCT, "cpu.stat - nr_periods", oldVal, newVal);
384 }
385
386 oldVal = metrics.getCpuNumThrottled();
387 newVal = getLongValueFromFile(Controller.CPUACCT, "cpu.stat", "nr_throttled");
388 if (!CgroupMetricsTester.compareWithErrorMargin(oldVal, newVal)) {
389 fail(Controller.CPUACCT, "cpu.stat - nr_throttled", oldVal, newVal);
390 }
391
392 oldVal = metrics.getCpuThrottledTime();
393 newVal = getLongValueFromFile(Controller.CPUACCT, "cpu.stat", "throttled_time");
394 if (!CgroupMetricsTester.compareWithErrorMargin(oldVal, newVal)) {
395 fail(Controller.CPUACCT, "cpu.stat - throttled_time", oldVal, newVal);
396 }
397 }
398
399 public void testCpuSets() {
400 Metrics metrics = Metrics.systemMetrics();
401 Integer[] oldVal = Arrays.stream(metrics.getCpuSetCpus()).boxed().toArray(Integer[]::new);
402 Arrays.sort(oldVal);
403
404 String cpusstr = getFileContents(Controller.CPUSET, "cpuset.cpus");
405 // Parse range string in the format 1,2-6,7
406 Integer[] newVal = CgroupMetricsTester.convertCpuSetsToArray(cpusstr);
407 Arrays.sort(newVal);
408 if (Arrays.compare(oldVal, newVal) != 0) {
409 fail(Controller.CPUSET, "cpuset.cpus", Arrays.toString(oldVal),
410 Arrays.toString(newVal));
411 }
412
413 int [] cpuSets = metrics.getEffectiveCpuSetCpus();
414
415 // Skip this test if this metric is not supported on this platform
416 if (cpuSets.length != 0) {
417 oldVal = Arrays.stream(cpuSets).boxed().toArray(Integer[]::new);
418 Arrays.sort(oldVal);
419 cpusstr = getFileContents(Controller.CPUSET, "cpuset.effective_cpus");
420 newVal = CgroupMetricsTester.convertCpuSetsToArray(cpusstr);
421 Arrays.sort(newVal);
422 if (Arrays.compare(oldVal, newVal) != 0) {
423 fail(Controller.CPUSET, "cpuset.effective_cpus", Arrays.toString(oldVal),
424 Arrays.toString(newVal));
425 }
426 }
427
428 oldVal = Arrays.stream(metrics.getCpuSetMems()).boxed().toArray(Integer[]::new);
429 Arrays.sort(oldVal);
430 cpusstr = getFileContents(Controller.CPUSET, "cpuset.mems");
431 newVal = CgroupMetricsTester.convertCpuSetsToArray(cpusstr);
432 Arrays.sort(newVal);
433 if (Arrays.compare(oldVal, newVal) != 0) {
434 fail(Controller.CPUSET, "cpuset.mems", Arrays.toString(oldVal),
435 Arrays.toString(newVal));
436 }
437
438 int [] cpuSetMems = metrics.getEffectiveCpuSetMems();
439
440 // Skip this test if this metric is not supported on this platform
441 if (cpuSetMems.length != 0) {
442 oldVal = Arrays.stream(cpuSetMems).boxed().toArray(Integer[]::new);
443 Arrays.sort(oldVal);
444 cpusstr = getFileContents(Controller.CPUSET, "cpuset.effective_mems");
445 newVal = CgroupMetricsTester.convertCpuSetsToArray(cpusstr);
446 Arrays.sort(newVal);
447 if (Arrays.compare(oldVal, newVal) != 0) {
448 fail(Controller.CPUSET, "cpuset.effective_mems", Arrays.toString(oldVal),
449 Arrays.toString(newVal));
450 }
451 }
452
453 double oldValue = metrics.getCpuSetMemoryPressure();
454 double newValue = getDoubleValueFromFile(Controller.CPUSET, "cpuset.memory_pressure");
455 if (!CgroupMetricsTester.compareWithErrorMargin(oldValue, newValue)) {
456 fail(Controller.CPUSET, "cpuset.memory_pressure", oldValue, newValue);
457 }
458
459 boolean oldV = metrics.isCpuSetMemoryPressureEnabled();
460 boolean newV = getLongValueFromFile(Controller.CPUSET,
461 "cpuset.memory_pressure_enabled") == 1 ? true : false;
462 if (oldV != newV) {
463 fail(Controller.CPUSET, "cpuset.memory_pressure_enabled", oldV, newV);
464 }
465 }
466
467 private void testBlkIO() {
468 Metrics metrics = Metrics.systemMetrics();
469 long oldVal = metrics.getBlkIOServiceCount();
470 long newVal = getLongValueFromFile(Controller.BLKIO,
471 "blkio.throttle.io_service_bytes", "Total");
472 if (!CgroupMetricsTester.compareWithErrorMargin(oldVal, newVal)) {
473 fail(Controller.BLKIO, "blkio.throttle.io_service_bytes - Total",
474 oldVal, newVal);
475 }
476
477 oldVal = metrics.getBlkIOServiced();
478 newVal = getLongValueFromFile(Controller.BLKIO, "blkio.throttle.io_serviced", "Total");
479 if (!CgroupMetricsTester.compareWithErrorMargin(oldVal, newVal)) {
480 fail(Controller.BLKIO, "blkio.throttle.io_serviced - Total", oldVal, newVal);
481 }
482 }
483
484 public void testCpuConsumption() throws IOException, InterruptedException {
485 Metrics metrics = Metrics.systemMetrics();
486 // make system call
487 long newSysVal = metrics.getCpuSystemUsage();
488 long newUserVal = metrics.getCpuUserUsage();
489 long newUsage = metrics.getCpuUsage();
490 long[] newPerCpu = metrics.getPerCpuUsage();
491
492 // system/user CPU usage counters may be slowly increasing.
493 // allow for equal values for a pass
494 if (newSysVal < startSysVal) {
495 fail(Controller.CPU, "getCpuSystemUsage", newSysVal, startSysVal);
496 }
497
498 // system/user CPU usage counters may be slowly increasing.
499 // allow for equal values for a pass
500 if (newUserVal < startUserVal) {
501 fail(Controller.CPU, "getCpuUserUsage", newUserVal, startUserVal);
502 }
503
504 if (newUsage <= startUsage) {
505 fail(Controller.CPU, "getCpuUsage", newUsage, startUsage);
506 }
507
508 boolean success = false;
509 for (int i = 0; i < startPerCpu.length; i++) {
510 if (newPerCpu[i] > startPerCpu[i]) {
511 success = true;
512 break;
513 }
514 }
515
516 if(!success) fail(Controller.CPU, "getPerCpuUsage", Arrays.toString(newPerCpu),
517 Arrays.toString(startPerCpu));
518 }
519
520 public void testMemoryUsage() throws Exception {
521 Metrics metrics = Metrics.systemMetrics();
522 long memoryMaxUsage = metrics.getMemoryMaxUsage();
523 long memoryUsage = metrics.getMemoryUsage();
524 long newMemoryMaxUsage = 0, newMemoryUsage = 0;
525
526 // allocate memory in a loop and check more than once for new values
527 // otherwise we might see seldom the effect of decreasing new memory values
528 // e.g. because the system could free up memory
529 byte[][] bytes = new byte[32][];
530 for (int i = 0; i < 32; i++) {
531 bytes[i] = new byte[8*1024*1024];
532 newMemoryUsage = metrics.getMemoryUsage();
533 if (newMemoryUsage > memoryUsage) {
534 break;
535 }
536 }
537 newMemoryMaxUsage = metrics.getMemoryMaxUsage();
538
539 if (newMemoryMaxUsage < memoryMaxUsage) {
540 fail(Controller.MEMORY, "getMemoryMaxUsage", memoryMaxUsage,
541 newMemoryMaxUsage);
542 }
543
544 if (newMemoryUsage < memoryUsage) {
545 fail(Controller.MEMORY, "getMemoryUsage", memoryUsage, newMemoryUsage);
546 }
547 }
548
549 @Override
550 public void testMisc() {
551 testBlkIO();
552 }
553 }