| /* |
| * Copyright (c) 2017, 2020, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| |
| /* |
| * @test |
| * @summary Test JVM's memory resource awareness when running inside docker container |
| * @requires docker.support |
| * @library /test/lib |
| * @modules java.base/jdk.internal.misc |
| * java.management |
| * jdk.jartool/sun.tools.jar |
| * @build AttemptOOM sun.hotspot.WhiteBox PrintContainerInfo CheckOperatingSystemMXBean |
| * @run driver ClassFileInstaller -jar whitebox.jar sun.hotspot.WhiteBox sun.hotspot.WhiteBox$WhiteBoxPermission |
| * @run driver TestMemoryAwareness |
| */ |
| import jdk.test.lib.containers.docker.Common; |
| import jdk.test.lib.containers.docker.DockerRunOptions; |
| import jdk.test.lib.containers.docker.DockerTestUtils; |
| import jdk.test.lib.process.OutputAnalyzer; |
| |
| public class TestMemoryAwareness { |
| private static final String imageName = Common.imageName("memory"); |
| |
| public static void main(String[] args) throws Exception { |
| if (!DockerTestUtils.canTestDocker()) { |
| return; |
| } |
| |
| Common.prepareWhiteBox(); |
| DockerTestUtils.buildJdkDockerImage(imageName, "Dockerfile-BasicTest", "jdk-docker"); |
| |
| try { |
| testMemoryLimit("100m", "104857600"); |
| testMemoryLimit("500m", "524288000"); |
| testMemoryLimit("1g", "1073741824"); |
| testMemoryLimit("4g", "4294967296"); |
| |
| testMemorySoftLimit("500m", "524288000"); |
| testMemorySoftLimit("1g", "1073741824"); |
| |
| // Add extra 10 Mb to allocator limit, to be sure to cause OOM |
| testOOM("256m", 256 + 10); |
| |
| testOperatingSystemMXBeanAwareness( |
| "100M", Integer.toString(((int) Math.pow(2, 20)) * 100), |
| "150M", Integer.toString(((int) Math.pow(2, 20)) * (150 - 100)) |
| ); |
| testOperatingSystemMXBeanAwareness( |
| "128M", Integer.toString(((int) Math.pow(2, 20)) * 128), |
| "256M", Integer.toString(((int) Math.pow(2, 20)) * (256 - 128)) |
| ); |
| testOperatingSystemMXBeanAwareness( |
| "1G", Integer.toString(((int) Math.pow(2, 20)) * 1024), |
| "1500M", Integer.toString(((int) Math.pow(2, 20)) * (1500 - 1024)) |
| ); |
| } finally { |
| if (!DockerTestUtils.RETAIN_IMAGE_AFTER_TEST) { |
| DockerTestUtils.removeDockerImage(imageName); |
| } |
| } |
| } |
| |
| |
| private static void testMemoryLimit(String valueToSet, String expectedTraceValue) |
| throws Exception { |
| |
| Common.logNewTestCase("memory limit: " + valueToSet); |
| |
| DockerRunOptions opts = Common.newOpts(imageName) |
| .addDockerOpts("--memory", valueToSet); |
| |
| Common.run(opts) |
| .shouldMatch("Memory Limit is:.*" + expectedTraceValue); |
| } |
| |
| |
| private static void testMemorySoftLimit(String valueToSet, String expectedTraceValue) |
| throws Exception { |
| Common.logNewTestCase("memory soft limit: " + valueToSet); |
| |
| DockerRunOptions opts = Common.newOpts(imageName, "PrintContainerInfo"); |
| Common.addWhiteBoxOpts(opts); |
| opts.addDockerOpts("--memory-reservation=" + valueToSet); |
| |
| Common.run(opts) |
| .shouldMatch("Memory Soft Limit.*" + expectedTraceValue); |
| } |
| |
| |
| // provoke OOM inside the container, see how VM reacts |
| private static void testOOM(String dockerMemLimit, int sizeToAllocInMb) throws Exception { |
| Common.logNewTestCase("OOM"); |
| |
| // add "--memory-swappiness 0" so as to disable anonymous page swapping. |
| DockerRunOptions opts = Common.newOpts(imageName, "AttemptOOM") |
| .addDockerOpts("--memory", dockerMemLimit, "--memory-swappiness", "0", "--memory-swap", dockerMemLimit); |
| opts.classParams.add("" + sizeToAllocInMb); |
| |
| // make sure we avoid inherited Xmx settings from the jtreg vmoptions |
| // set Xmx ourselves instead |
| System.out.println("sizeToAllocInMb is:" + sizeToAllocInMb + " sizeToAllocInMb/2 is:" + sizeToAllocInMb/2); |
| String javaHeapSize = sizeToAllocInMb/2 + "m"; |
| opts.addJavaOptsAppended("-Xmx" + javaHeapSize); |
| |
| OutputAnalyzer out = DockerTestUtils.dockerRunJava(opts); |
| |
| if (out.getExitValue() == 0) { |
| throw new RuntimeException("We exited successfully, but we wanted to provoke an OOM inside the container"); |
| } |
| |
| out.shouldContain("Entering AttemptOOM main") |
| .shouldNotContain("AttemptOOM allocation successful") |
| .shouldContain("java.lang.OutOfMemoryError"); |
| } |
| |
| private static void testOperatingSystemMXBeanAwareness(String memoryAllocation, String expectedMemory, |
| String swapAllocation, String expectedSwap) throws Exception { |
| Common.logNewTestCase("Check OperatingSystemMXBean"); |
| |
| DockerRunOptions opts = Common.newOpts(imageName, "CheckOperatingSystemMXBean") |
| .addDockerOpts( |
| "--memory", memoryAllocation, |
| "--memory-swap", swapAllocation |
| ); |
| |
| OutputAnalyzer out = DockerTestUtils.dockerRunJava(opts); |
| out.shouldHaveExitValue(0) |
| .shouldContain("Checking OperatingSystemMXBean") |
| .shouldContain("OperatingSystemMXBean.getTotalPhysicalMemorySize: " + expectedMemory) |
| .shouldMatch("OperatingSystemMXBean\\.getFreePhysicalMemorySize: [1-9][0-9]+"); |
| // in case of warnings like : "Your kernel does not support swap limit capabilities |
| // or the cgroup is not mounted. Memory limited without swap." |
| // the getTotalSwapSpaceSize and getFreeSwapSpaceSize return the system |
| // values as the container setup isn't supported in that case. |
| try { |
| out.shouldContain("OperatingSystemMXBean.getTotalSwapSpaceSize: " + expectedSwap); |
| } catch(RuntimeException ex) { |
| out.shouldMatch("OperatingSystemMXBean.getTotalSwapSpaceSize: [0-9]+"); |
| } |
| try { |
| out.shouldMatch("OperatingSystemMXBean\\.getFreeSwapSpaceSize: [1-9][0-9]+"); |
| } catch(RuntimeException ex) { |
| out.shouldMatch("OperatingSystemMXBean\\.getFreeSwapSpaceSize: 0"); |
| } |
| } |
| |
| } |