732d8865df
When the kernel doesn't support swap limits, expect host values instead. Reviewed-by: mbaesken, bobv, stuefe
56 lines
3.3 KiB
Java
56 lines
3.3 KiB
Java
/*
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* Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2019, Red Hat Inc. 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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import com.sun.management.OperatingSystemMXBean;
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import java.lang.management.ManagementFactory;
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import jdk.internal.platform.Metrics;
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public class CheckOperatingSystemMXBean {
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public static void main(String[] args) {
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System.out.println("Checking OperatingSystemMXBean");
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Metrics metrics = jdk.internal.platform.Container.metrics();
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System.out.println("Metrics instance: " + (metrics == null ? "null" : "non-null"));
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if (metrics != null) {
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System.out.println("Metrics.getMemoryAndSwapLimit() == " + metrics.getMemoryAndSwapLimit());
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System.out.println("Metrics.getMemoryLimit() == " + metrics.getMemoryLimit());
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System.out.println("Metrics.getMemoryAndSwapUsage() == " + metrics.getMemoryAndSwapUsage());
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System.out.println("Metrics.getMemoryUsage() == " + metrics.getMemoryUsage());
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}
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OperatingSystemMXBean osBean = (OperatingSystemMXBean) ManagementFactory.getOperatingSystemMXBean();
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System.out.println(String.format("Runtime.availableProcessors: %d", Runtime.getRuntime().availableProcessors()));
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System.out.println(String.format("OperatingSystemMXBean.getAvailableProcessors: %d", osBean.getAvailableProcessors()));
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System.out.println(String.format("OperatingSystemMXBean.getTotalMemorySize: %d", osBean.getTotalMemorySize()));
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System.out.println(String.format("OperatingSystemMXBean.getTotalPhysicalMemorySize: %d", osBean.getTotalPhysicalMemorySize()));
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System.out.println(String.format("OperatingSystemMXBean.getFreeMemorySize: %d", osBean.getFreeMemorySize()));
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System.out.println(String.format("OperatingSystemMXBean.getFreePhysicalMemorySize: %d", osBean.getFreePhysicalMemorySize()));
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System.out.println(String.format("OperatingSystemMXBean.getTotalSwapSpaceSize: %d", osBean.getTotalSwapSpaceSize()));
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System.out.println(String.format("OperatingSystemMXBean.getFreeSwapSpaceSize: %d", osBean.getFreeSwapSpaceSize()));
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System.out.println(String.format("OperatingSystemMXBean.getCpuLoad: %f", osBean.getCpuLoad()));
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System.out.println(String.format("OperatingSystemMXBean.getSystemCpuLoad: %f", osBean.getSystemCpuLoad()));
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}
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}
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