210 lines
8.5 KiB
Java
210 lines
8.5 KiB
Java
/*
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* Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @summary Test JVM's CPU resource awareness when running inside docker container
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* @requires docker.support
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* @library /test/lib
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* @modules java.base/jdk.internal.misc
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* java.management
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* jdk.jartool/sun.tools.jar
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* @run driver TestCPUAwareness
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*/
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import java.util.List;
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import jdk.test.lib.containers.docker.Common;
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import jdk.test.lib.containers.docker.DockerRunOptions;
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import jdk.test.lib.containers.docker.DockerTestUtils;
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import jdk.test.lib.containers.cgroup.CPUSetsReader;
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public class TestCPUAwareness {
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private static final String imageName = Common.imageName("cpu");
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private static final int availableCPUs = Runtime.getRuntime().availableProcessors();
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public static void main(String[] args) throws Exception {
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if (!DockerTestUtils.canTestDocker()) {
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return;
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}
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System.out.println("Test Environment: detected availableCPUs = " + availableCPUs);
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DockerTestUtils.buildJdkDockerImage(imageName, "Dockerfile-BasicTest", "jdk-docker");
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try {
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// cpuset, period, shares, expected Active Processor Count
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testComboWithCpuSets();
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// cpu shares - it should be safe to use CPU shares exceeding available CPUs
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testCpuShares(256, 1);
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testCpuShares(2048, 2);
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testCpuShares(4096, 4);
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// leave one CPU for system and tools, otherwise this test may be unstable
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int maxNrOfAvailableCpus = availableCPUs - 1;
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for (int i=1; i < maxNrOfAvailableCpus; i = i * 2) {
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testCpus(i, i);
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}
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// If ActiveProcessorCount is set, the VM should use it, regardless of other
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// container settings, host settings or available CPUs on the host.
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testActiveProcessorCount(1, 1);
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testActiveProcessorCount(2, 2);
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// cpu quota and period
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testCpuQuotaAndPeriod(50*1000, 100*1000);
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testCpuQuotaAndPeriod(100*1000, 100*1000);
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testCpuQuotaAndPeriod(150*1000, 100*1000);
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testCpuQuotaAndPeriod(400*1000, 100*1000);
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} finally {
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DockerTestUtils.removeDockerImage(imageName);
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}
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}
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private static void testComboWithCpuSets() throws Exception {
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String cpuSetStr = CPUSetsReader.readFromProcStatus("Cpus_allowed_list");
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System.out.println("cpuSetStr = " + cpuSetStr);
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if (cpuSetStr == null) {
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System.out.printf("The cpuset test cases are skipped");
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} else {
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List<Integer> cpuSet = CPUSetsReader.parseCpuSet(cpuSetStr);
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// Test subset of cpuset with one element
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if (cpuSet.size() >= 1) {
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String testCpuSet = CPUSetsReader.listToString(cpuSet, 1);
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testAPCCombo(testCpuSet, 200*1000, 100*1000, 4*1024, true, 1);
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}
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// Test subset of cpuset with two elements
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if (cpuSet.size() >= 2) {
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String testCpuSet = CPUSetsReader.listToString(cpuSet, 2);
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testAPCCombo(testCpuSet, 200*1000, 100*1000, 4*1024, true, 2);
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testAPCCombo(testCpuSet, 200*1000, 100*1000, 1023, true, 2);
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testAPCCombo(testCpuSet, 200*1000, 100*1000, 1023, false, 1);
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}
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// Test subset of cpuset with three elements
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if (cpuSet.size() >= 3) {
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String testCpuSet = CPUSetsReader.listToString(cpuSet, 3);
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testAPCCombo(testCpuSet, 100*1000, 100*1000, 2*1024, true, 1);
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testAPCCombo(testCpuSet, 200*1000, 100*1000, 1023, true, 2);
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testAPCCombo(testCpuSet, 200*1000, 100*1000, 1023, false, 1);
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}
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}
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}
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private static void testActiveProcessorCount(int valueToSet, int expectedValue) throws Exception {
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Common.logNewTestCase("Test ActiveProcessorCount: valueToSet = " + valueToSet);
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DockerRunOptions opts = Common.newOpts(imageName)
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.addJavaOpts("-XX:ActiveProcessorCount=" + valueToSet, "-Xlog:os=trace");
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Common.run(opts)
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.shouldMatch("active processor count set by user.*" + expectedValue);
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}
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private static void testCpus(int valueToSet, int expectedTraceValue) throws Exception {
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Common.logNewTestCase("test cpus: " + valueToSet);
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DockerRunOptions opts = Common.newOpts(imageName)
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.addDockerOpts("--cpu-period=" + 10000)
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.addDockerOpts("--cpu-quota=" + valueToSet * 10000);
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Common.run(opts)
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.shouldMatch("active_processor_count.*" + expectedTraceValue);
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}
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// Expected active processor count can not exceed available CPU count
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private static int adjustExpectedAPCForAvailableCPUs(int expectedAPC) {
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if (expectedAPC > availableCPUs) {
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expectedAPC = availableCPUs;
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System.out.println("Adjusted expectedAPC = " + expectedAPC);
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}
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return expectedAPC;
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}
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private static void testCpuQuotaAndPeriod(int quota, int period)
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throws Exception {
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Common.logNewTestCase("test cpu quota and period: ");
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System.out.println("quota = " + quota);
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System.out.println("period = " + period);
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int expectedAPC = (int) Math.ceil((float) quota / (float) period);
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System.out.println("expectedAPC = " + expectedAPC);
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expectedAPC = adjustExpectedAPCForAvailableCPUs(expectedAPC);
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DockerRunOptions opts = Common.newOpts(imageName)
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.addDockerOpts("--cpu-period=" + period)
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.addDockerOpts("--cpu-quota=" + quota);
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Common.run(opts)
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.shouldMatch("CPU Period is.*" + period)
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.shouldMatch("CPU Quota is.*" + quota)
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.shouldMatch("active_processor_count.*" + expectedAPC);
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}
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// Test correctess of automatically selected active processor cound
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private static void testAPCCombo(String cpuset, int quota, int period, int shares,
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boolean usePreferContainerQuotaForCPUCount,
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int expectedAPC) throws Exception {
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Common.logNewTestCase("test APC Combo");
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System.out.println("cpuset = " + cpuset);
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System.out.println("quota = " + quota);
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System.out.println("period = " + period);
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System.out.println("shares = " + shares);
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System.out.println("usePreferContainerQuotaForCPUCount = " + usePreferContainerQuotaForCPUCount);
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System.out.println("expectedAPC = " + expectedAPC);
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expectedAPC = adjustExpectedAPCForAvailableCPUs(expectedAPC);
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DockerRunOptions opts = Common.newOpts(imageName)
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.addDockerOpts("--cpuset-cpus", "" + cpuset)
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.addDockerOpts("--cpu-period=" + period)
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.addDockerOpts("--cpu-quota=" + quota)
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.addDockerOpts("--cpu-shares=" + shares);
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if (!usePreferContainerQuotaForCPUCount) opts.addJavaOpts("-XX:-PreferContainerQuotaForCPUCount");
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Common.run(opts)
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.shouldMatch("active_processor_count.*" + expectedAPC);
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}
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private static void testCpuShares(int shares, int expectedAPC) throws Exception {
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Common.logNewTestCase("test cpu shares, shares = " + shares);
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System.out.println("expectedAPC = " + expectedAPC);
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expectedAPC = adjustExpectedAPCForAvailableCPUs(expectedAPC);
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DockerRunOptions opts = Common.newOpts(imageName)
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.addDockerOpts("--cpu-shares=" + shares);
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Common.run(opts)
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.shouldMatch("CPU Shares is.*" + shares)
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.shouldMatch("active_processor_count.*" + expectedAPC);
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}
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}
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