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 <h2 title="Interface OperatingSystemMXBean" class="title">Interface OperatingSystemMXBean</h2>
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 <dl>
 <dt>All Superinterfaces:</dt>
 <dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/jdk.management/com/sun/management/OperatingSystemMXBean.html?is-external=true" title="class or interface in com.sun.management" class="externalLink" target="_blank">OperatingSystemMXBean</a></code>, <code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.management/java/lang/management/OperatingSystemMXBean.html?is-external=true" title="class or interface in java.lang.management" class="externalLink" target="_blank">OperatingSystemMXBean</a></code>, <code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.management/java/lang/management/PlatformManagedObject.html?is-external=true" title="class or interface in java.lang.management" class="externalLink" target="_blank">PlatformManagedObject</a></code></dd>
 </dl>
 <dl>
 <dt>All Known Subinterfaces:</dt>
 <dd><code><a href="UnixOperatingSystemMXBean.html" title="interface in com.ibm.lang.management">UnixOperatingSystemMXBean</a></code></dd>
 </dl>
 <dl>
 <dt>All Known Implementing Classes:</dt>
 <dd><code><a href="internal/ExtendedOperatingSystemMXBeanImpl.html" title="class in com.ibm.lang.management.internal">ExtendedOperatingSystemMXBeanImpl</a></code>, <code><a href="internal/UnixExtendedOperatingSystem.html" title="class in com.ibm.lang.management.internal">UnixExtendedOperatingSystem</a></code></dd>
 </dl>
 <hr>
 <pre>public interface <span class="typeNameLabel">OperatingSystemMXBean</span>
 extends <a href="https://docs.oracle.com/en/java/javase/11/docs/api/jdk.management/com/sun/management/OperatingSystemMXBean.html?is-external=true" title="class or interface in com.sun.management" class="externalLink" target="_blank">OperatingSystemMXBean</a></pre>
 <div class="block">OpenJ9 platform management extension interface for the Operating System on which the Java Virtual Machine is running.
  <br>
  <table border="1">
  <caption><b>Usage example for the <a href="OperatingSystemMXBean.html" title="interface in com.ibm.lang.management"><code>OperatingSystemMXBean</code></a></b></caption>
  <tr> <td> <pre>
  <code>
  ...
  com.ibm.lang.management.OperatingSystemMXBean osmxbean = null;
  osmxbean = (com.ibm.lang.management.OperatingSystemMXBean) ManagementFactory.getOperatingSystemMXBean();
  ...
  </code>
  </pre></td></tr></table></div>
 <dl>
 <dt><span class="simpleTagLabel">Since:</span></dt>
 <dd>1.5</dd>
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 <th class="colFirst" scope="col">Modifier and Type</th>
 <th class="colSecond" scope="col">Method</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tr id="i0" class="altColor">
 <td class="colFirst"><code>long</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getCommittedVirtualMemorySize()">getCommittedVirtualMemorySize</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Returns the amount of virtual memory used by the process in bytes.</div>
 </td>
 </tr>
 <tr id="i1" class="rowColor">
 <td class="colFirst"><code>long</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getFreePhysicalMemorySize()">getFreePhysicalMemorySize</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Returns the amount of physical memory that is available on the system in bytes.</div>
 </td>
 </tr>
 <tr id="i2" class="altColor">
 <td class="colFirst"><code>long</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getFreeSwapSpaceSize()">getFreeSwapSpaceSize</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Returns the amount of free swap space in bytes.</div>
 </td>
 </tr>
 <tr id="i3" class="rowColor">
 <td class="colFirst"><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">String</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getHardwareModel()">getHardwareModel</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Instantiates and returns an instance of a <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank"><code>String</code></a> object containing
  hardware model information</div>
 </td>
 </tr>
 <tr id="i4" class="altColor">
 <td class="colFirst"><code>double</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getProcessCpuLoad()">getProcessCpuLoad</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Returns the "recent cpu usage" for the Java Virtual Machine process.</div>
 </td>
 </tr>
 <tr id="i5" class="rowColor">
 <td class="colFirst"><code>long</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getProcessCpuTime()">getProcessCpuTime</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Returns total amount of time the process has been scheduled or
  executed so far in both kernel and user modes.</div>
 </td>
 </tr>
 <tr id="i6" class="altColor">
 <td class="colFirst"><code>long</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getProcessCpuTimeByNS()">getProcessCpuTimeByNS</a></span>()</code></th>
 <td class="colLast">
 <div class="block"><span class="deprecatedLabel">Deprecated, for removal: This API element is subject to removal in a future version.</span></div>
 </td>
 </tr>
 <tr id="i7" class="rowColor">
 <td class="colFirst"><code>int</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getProcessingCapacity()">getProcessingCapacity</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Returns the collective capacity of the virtual processors in
  the partition the VM is running in.</div>
 </td>
 </tr>
 <tr id="i8" class="altColor">
 <td class="colFirst"><code>long</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getProcessPhysicalMemorySize()">getProcessPhysicalMemorySize</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Returns the amount of physical memory being used by the process
  in bytes.</div>
 </td>
 </tr>
 <tr id="i9" class="rowColor">
 <td class="colFirst"><code>long</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getProcessPrivateMemorySize()">getProcessPrivateMemorySize</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Returns the amount of private memory used by the process in bytes.</div>
 </td>
 </tr>
 <tr id="i10" class="altColor">
 <td class="colFirst"><code>long</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getProcessVirtualMemorySize()">getProcessVirtualMemorySize</a></span>()</code></th>
 <td class="colLast">
 <div class="block"><span class="deprecatedLabel">Deprecated, for removal: This API element is subject to removal in a future version.</span></div>
 </td>
 </tr>
 <tr id="i11" class="rowColor">
 <td class="colFirst"><code>double</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getSystemCpuLoad()">getSystemCpuLoad</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Returns the "recent cpu usage" for the whole system.</div>
 </td>
 </tr>
 <tr id="i12" class="altColor">
 <td class="colFirst"><code>long</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getTotalPhysicalMemory()">getTotalPhysicalMemory</a></span>()</code></th>
 <td class="colLast">
 <div class="block"><span class="deprecatedLabel">Deprecated, for removal: This API element is subject to removal in a future version.</span></div>
 </td>
 </tr>
 <tr id="i13" class="rowColor">
 <td class="colFirst"><code>long</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getTotalPhysicalMemorySize()">getTotalPhysicalMemorySize</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Returns the total available physical memory on the system in bytes.</div>
 </td>
 </tr>
 <tr id="i14" class="altColor">
 <td class="colFirst"><code>long</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getTotalSwapSpaceSize()">getTotalSwapSpaceSize</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Returns the total amount of swap space in bytes.</div>
 </td>
 </tr>
 <tr id="i15" class="rowColor">
 <td class="colFirst"><code>boolean</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isHardwareEmulated()">isHardwareEmulated</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Identify whether the underlying hardware is being emulated</div>
 </td>
 </tr>
 <tr id="i16" class="altColor">
 <td class="colFirst"><code>boolean</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isProcessRunning(long)">isProcessRunning</a></span>&#8203;(long&nbsp;pid)</code></th>
 <td class="colLast">
 <div class="block">Indicates if the specified process is running</div>
 </td>
 </tr>
 <tr id="i17" class="rowColor">
 <td class="colFirst"><code><a href="MemoryUsage.html" title="class in com.ibm.lang.management">MemoryUsage</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#retrieveMemoryUsage()">retrieveMemoryUsage</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Instantiates and returns an instance of <a href="MemoryUsage.html" title="class in com.ibm.lang.management"><code>MemoryUsage</code></a> object
  that represents the current snapshot of Memory usage statistics.</div>
 </td>
 </tr>
 <tr id="i18" class="altColor">
 <td class="colFirst"><code><a href="MemoryUsage.html" title="class in com.ibm.lang.management">MemoryUsage</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#retrieveMemoryUsage(com.ibm.lang.management.MemoryUsage)">retrieveMemoryUsage</a></span>&#8203;(<a href="MemoryUsage.html" title="class in com.ibm.lang.management">MemoryUsage</a>&nbsp;memObj)</code></th>
 <td class="colLast">
 <div class="block">Returns an updated <a href="MemoryUsage.html" title="class in com.ibm.lang.management"><code>MemoryUsage</code></a> object that represents the
  current snapshot of Memory usage statistics.</div>
 </td>
 </tr>
 <tr id="i19" class="rowColor">
 <td class="colFirst"><code><a href="ProcessorUsage.html" title="class in com.ibm.lang.management">ProcessorUsage</a>[]</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#retrieveProcessorUsage()">retrieveProcessorUsage</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Instantiates and returns an array of <a href="ProcessorUsage.html" title="class in com.ibm.lang.management"><code>ProcessorUsage</code></a> objects
  that represent the current snapshot of individual Processor usage times.</div>
 </td>
 </tr>
 <tr id="i20" class="altColor">
 <td class="colFirst"><code><a href="ProcessorUsage.html" title="class in com.ibm.lang.management">ProcessorUsage</a>[]</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#retrieveProcessorUsage(com.ibm.lang.management.ProcessorUsage%5B%5D)">retrieveProcessorUsage</a></span>&#8203;(<a href="ProcessorUsage.html" title="class in com.ibm.lang.management">ProcessorUsage</a>[]&nbsp;procArray)</code></th>
 <td class="colLast">
 <div class="block">Returns an updated array of <a href="ProcessorUsage.html" title="class in com.ibm.lang.management"><code>ProcessorUsage</code></a> objects
  that represent the current snapshot of individual Processor usage times.</div>
 </td>
 </tr>
 <tr id="i21" class="rowColor">
 <td class="colFirst"><code><a href="ProcessorUsage.html" title="class in com.ibm.lang.management">ProcessorUsage</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#retrieveTotalProcessorUsage()">retrieveTotalProcessorUsage</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Instantiate and return a new <a href="ProcessorUsage.html" title="class in com.ibm.lang.management"><code>ProcessorUsage</code></a> object that
  represents the current snapshot of Processor usage statistics.</div>
 </td>
 </tr>
 <tr id="i22" class="altColor">
 <td class="colFirst"><code><a href="ProcessorUsage.html" title="class in com.ibm.lang.management">ProcessorUsage</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#retrieveTotalProcessorUsage(com.ibm.lang.management.ProcessorUsage)">retrieveTotalProcessorUsage</a></span>&#8203;(<a href="ProcessorUsage.html" title="class in com.ibm.lang.management">ProcessorUsage</a>&nbsp;procObj)</code></th>
 <td class="colLast">
 <div class="block">Returns an updated <a href="ProcessorUsage.html" title="class in com.ibm.lang.management"><code>ProcessorUsage</code></a> object that represents the
  current snapshot of Processor usage statistics.</div>
 </td>
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 <h3>Methods declared in interface&nbsp;java.lang.management.<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.management/java/lang/management/OperatingSystemMXBean.html?is-external=true" title="class or interface in java.lang.management" class="externalLink" target="_blank">OperatingSystemMXBean</a></h3>
 <code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.management/java/lang/management/OperatingSystemMXBean.html?is-external=true#getArch()" title="class or interface in java.lang.management" class="externalLink" target="_blank">getArch</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.management/java/lang/management/OperatingSystemMXBean.html?is-external=true#getAvailableProcessors()" title="class or interface in java.lang.management" class="externalLink" target="_blank">getAvailableProcessors</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.management/java/lang/management/OperatingSystemMXBean.html?is-external=true#getName()" title="class or interface in java.lang.management" class="externalLink" target="_blank">getName</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.management/java/lang/management/OperatingSystemMXBean.html?is-external=true#getSystemLoadAverage()" title="class or interface in java.lang.management" class="externalLink" target="_blank">getSystemLoadAverage</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.management/java/lang/management/OperatingSystemMXBean.html?is-external=true#getVersion()" title="class or interface in java.lang.management" class="externalLink" target="_blank">getVersion</a></code></li>
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 <h3>Methods declared in interface&nbsp;java.lang.management.<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.management/java/lang/management/PlatformManagedObject.html?is-external=true" title="class or interface in java.lang.management" class="externalLink" target="_blank">PlatformManagedObject</a></h3>
 <code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.management/java/lang/management/PlatformManagedObject.html?is-external=true#getObjectName()" title="class or interface in java.lang.management" class="externalLink" target="_blank">getObjectName</a></code></li>
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 <h4>getTotalPhysicalMemorySize</h4>
 <pre class="methodSignature">long&nbsp;getTotalPhysicalMemorySize()</pre>
 <div class="block">Returns the total available physical memory on the system in bytes.</div>
 <dl>
 <dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
 <dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/jdk.management/com/sun/management/OperatingSystemMXBean.html?is-external=true#getTotalPhysicalMemorySize()" title="class or interface in com.sun.management" class="externalLink" target="_blank">getTotalPhysicalMemorySize</a></code>&nbsp;in interface&nbsp;<code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/jdk.management/com/sun/management/OperatingSystemMXBean.html?is-external=true" title="class or interface in com.sun.management" class="externalLink" target="_blank">OperatingSystemMXBean</a></code></dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the total available physical memory on the system in bytes.</dd>
 <dt><span class="simpleTagLabel">Since:</span></dt>
 <dd>1.8</dd>
 </dl>
 </li>
 </ul>
 <a id="getTotalPhysicalMemory()">
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 <h4>getTotalPhysicalMemory</h4>
 <pre class="methodSignature"><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">@Deprecated</a>(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Deprecated.html?is-external=true#forRemoval()" title="class or interface in java.lang" class="externalLink" target="_blank">forRemoval</a>=true,
             <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Deprecated.html?is-external=true#since()" title="class or interface in java.lang" class="externalLink" target="_blank">since</a>="1.8")
 long&nbsp;getTotalPhysicalMemory()</pre>
 <div class="deprecationBlock"><span class="deprecatedLabel">Deprecated, for removal: This API element is subject to removal in a future version.</span></div>
 <div class="block">Deprecated: use getTotalPhysicalMemorySize()</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the total available physical memory on the system in bytes.</dd>
 </dl>
 </li>
 </ul>
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 <pre class="methodSignature">int&nbsp;getProcessingCapacity()</pre>
 <div class="block">Returns the collective capacity of the virtual processors in
  the partition the VM is running in. The value returned is in
  units of 1% of a physical processor's capacity, so a value of
  100 is equal to 1 physical processor. In environments without
  such partitioning support, this call will return
  getAvailableProcessors() * 100.</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the collective capacity of the virtual processors available
  to the VM.</dd>
 </dl>
 </li>
 </ul>
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 <pre class="methodSignature">long&nbsp;getProcessCpuTime()</pre>
 <div class="block">Returns total amount of time the process has been scheduled or
  executed so far in both kernel and user modes. Returns -1 if the
  value is unavailable on this platform or in the case of an error.

  Note that as of Java 8 SR5 the returned value is in 1 ns units, unless the system property
  com.ibm.lang.management.OperatingSystemMXBean.isCpuTime100ns is set to "true".</div>
 <dl>
 <dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
 <dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/jdk.management/com/sun/management/OperatingSystemMXBean.html?is-external=true#getProcessCpuTime()" title="class or interface in com.sun.management" class="externalLink" target="_blank">getProcessCpuTime</a></code>&nbsp;in interface&nbsp;<code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/jdk.management/com/sun/management/OperatingSystemMXBean.html?is-external=true" title="class or interface in com.sun.management" class="externalLink" target="_blank">OperatingSystemMXBean</a></code></dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>process cpu time.</dd>
 </dl>
 </li>
 </ul>
 <a id="getProcessCpuTimeByNS()">
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 <h4>getProcessCpuTimeByNS</h4>
 <pre class="methodSignature"><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">@Deprecated</a>(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Deprecated.html?is-external=true#forRemoval()" title="class or interface in java.lang" class="externalLink" target="_blank">forRemoval</a>=true,
             <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Deprecated.html?is-external=true#since()" title="class or interface in java.lang" class="externalLink" target="_blank">since</a>="1.8")
 long&nbsp;getProcessCpuTimeByNS()</pre>
 <div class="deprecationBlock"><span class="deprecatedLabel">Deprecated, for removal: This API element is subject to removal in a future version.</span></div>
 <div class="block">Deprecated. Use getProcessCpuTime()</div>
 </li>
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 <pre class="methodSignature">double&nbsp;getSystemCpuLoad()</pre>
 <div class="block">Returns the "recent cpu usage" for the whole system. This value is a double in
  the [0.0,1.0] interval. A value of 0.0 means all CPUs were idle in the recent
  period of time observed, while a value of 1.0 means that all CPUs were actively
  running 100% of the time during the recent period of time observed. All values
  between 0.0 and 1.0 are possible. The first call to the method always
  returns <a href="CpuLoadCalculationConstants.html" title="interface in com.ibm.lang.management"><code>CpuLoadCalculationConstants</code></a>.ERROR_VALUE
  (-1.0), which marks the starting point. If the Java Virtual Machine's recent CPU
  usage is not available, the method returns a negative error code from
  <a href="CpuLoadCalculationConstants.html" title="interface in com.ibm.lang.management"><code>CpuLoadCalculationConstants</code></a>.
  <p>getSystemCpuLoad might not return the same value that is reported by operating system
  utilities such as Unix "top" or Windows task manager.</p></div>
 <dl>
 <dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
 <dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/jdk.management/com/sun/management/OperatingSystemMXBean.html?is-external=true#getSystemCpuLoad()" title="class or interface in com.sun.management" class="externalLink" target="_blank">getSystemCpuLoad</a></code>&nbsp;in interface&nbsp;<code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/jdk.management/com/sun/management/OperatingSystemMXBean.html?is-external=true" title="class or interface in com.sun.management" class="externalLink" target="_blank">OperatingSystemMXBean</a></code></dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>A value between 0 and 1.0, or a negative error code from
          <a href="CpuLoadCalculationConstants.html" title="interface in com.ibm.lang.management"><code>CpuLoadCalculationConstants</code></a> in case
          of an error. On the first call to the API,
          <a href="CpuLoadCalculationConstants.html" title="interface in com.ibm.lang.management"><code>CpuLoadCalculationConstants</code></a>.ERROR_VALUE
          (-1.0) shall be returned.
  <ul>
  <li>Because this information is not available on z/OS, the call returns
  <a href="CpuLoadCalculationConstants.html" title="interface in com.ibm.lang.management"><code>CpuLoadCalculationConstants</code></a>.UNSUPPORTED_VALUE
  (-3.0).
  </ul></dd>
 <dt><span class="seeLabel">See Also:</span></dt>
 <dd><a href="CpuLoadCalculationConstants.html" title="interface in com.ibm.lang.management"><code>CpuLoadCalculationConstants</code></a></dd>
 </dl>
 </li>
 </ul>
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 <pre class="methodSignature">long&nbsp;getFreePhysicalMemorySize()</pre>
 <div class="block">Returns the amount of physical memory that is available on the system in bytes.
  Returns -1 if the value is unavailable on this platform or in the case of an error.
  <ul>
  <li>This information is not available on the z/OS platform.
  </ul></div>
 <dl>
 <dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
 <dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/jdk.management/com/sun/management/OperatingSystemMXBean.html?is-external=true#getFreePhysicalMemorySize()" title="class or interface in com.sun.management" class="externalLink" target="_blank">getFreePhysicalMemorySize</a></code>&nbsp;in interface&nbsp;<code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/jdk.management/com/sun/management/OperatingSystemMXBean.html?is-external=true" title="class or interface in com.sun.management" class="externalLink" target="_blank">OperatingSystemMXBean</a></code></dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>amount of physical memory available in bytes.</dd>
 </dl>
 </li>
 </ul>
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 <pre class="methodSignature">long&nbsp;getCommittedVirtualMemorySize()</pre>
 <div class="block">Returns the amount of virtual memory used by the process in bytes.
  Returns -1 if the value is unavailable on this platform or in the
  case of an error.
  <ul>
  <li>This information is not available on the z/OS platform.
  </ul></div>
 <dl>
 <dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
 <dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/jdk.management/com/sun/management/OperatingSystemMXBean.html?is-external=true#getCommittedVirtualMemorySize()" title="class or interface in com.sun.management" class="externalLink" target="_blank">getCommittedVirtualMemorySize</a></code>&nbsp;in interface&nbsp;<code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/jdk.management/com/sun/management/OperatingSystemMXBean.html?is-external=true" title="class or interface in com.sun.management" class="externalLink" target="_blank">OperatingSystemMXBean</a></code></dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>amount of virtual memory used by the process in bytes.</dd>
 <dt><span class="simpleTagLabel">Since:</span></dt>
 <dd>1.8</dd>
 </dl>
 </li>
 </ul>
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 <pre class="methodSignature"><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">@Deprecated</a>(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Deprecated.html?is-external=true#forRemoval()" title="class or interface in java.lang" class="externalLink" target="_blank">forRemoval</a>=true,
             <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Deprecated.html?is-external=true#since()" title="class or interface in java.lang" class="externalLink" target="_blank">since</a>="1.8")
 long&nbsp;getProcessVirtualMemorySize()</pre>
 <div class="deprecationBlock"><span class="deprecatedLabel">Deprecated, for removal: This API element is subject to removal in a future version.</span></div>
 <div class="block">Deprecated.  Use getCommittedVirtualMemorySize()</div>
 </li>
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 <pre class="methodSignature">long&nbsp;getProcessPrivateMemorySize()</pre>
 <div class="block">Returns the amount of private memory used by the process in bytes.
  Returns -1 if the value is unavailable on this platform or in the
  case of an error.
  <ul>
  <li>This information is not available on the z/OS platform.
  </ul></div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>amount of private memory used by the process in bytes.</dd>
 </dl>
 </li>
 </ul>
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 <pre class="methodSignature">long&nbsp;getProcessPhysicalMemorySize()</pre>
 <div class="block">Returns the amount of physical memory being used by the process
  in bytes. Returns -1 if the value is unavailable on this platform
  or in the case of an error.
  <ul>
  <li>This information is not available on the AIX and z/OS platforms.
  </ul></div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>amount of physical memory being used by the process in bytes.</dd>
 </dl>
 </li>
 </ul>
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 <pre class="methodSignature">long&nbsp;getTotalSwapSpaceSize()</pre>
 <div class="block">Returns the total amount of swap space in bytes.</div>
 <dl>
 <dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
 <dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/jdk.management/com/sun/management/OperatingSystemMXBean.html?is-external=true#getTotalSwapSpaceSize()" title="class or interface in com.sun.management" class="externalLink" target="_blank">getTotalSwapSpaceSize</a></code>&nbsp;in interface&nbsp;<code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/jdk.management/com/sun/management/OperatingSystemMXBean.html?is-external=true" title="class or interface in com.sun.management" class="externalLink" target="_blank">OperatingSystemMXBean</a></code></dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the total amount of swap space in bytes.</dd>
 <dt><span class="simpleTagLabel">Since:</span></dt>
 <dd>1.7</dd>
 </dl>
 </li>
 </ul>
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 <pre class="methodSignature">long&nbsp;getFreeSwapSpaceSize()</pre>
 <div class="block">Returns the amount of free swap space in bytes.</div>
 <dl>
 <dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
 <dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/jdk.management/com/sun/management/OperatingSystemMXBean.html?is-external=true#getFreeSwapSpaceSize()" title="class or interface in com.sun.management" class="externalLink" target="_blank">getFreeSwapSpaceSize</a></code>&nbsp;in interface&nbsp;<code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/jdk.management/com/sun/management/OperatingSystemMXBean.html?is-external=true" title="class or interface in com.sun.management" class="externalLink" target="_blank">OperatingSystemMXBean</a></code></dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the amount of free swap space in bytes.</dd>
 <dt><span class="simpleTagLabel">Since:</span></dt>
 <dd>1.7</dd>
 </dl>
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 </ul>
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 <pre class="methodSignature">double&nbsp;getProcessCpuLoad()</pre>
 <div class="block">Returns the "recent cpu usage" for the Java Virtual Machine process.
  This value is a double in the [0.0,1.0] interval. A value of 0.0 means
  that none of the CPUs were running threads from the JVM process during
  the recent period of time observed, while a value of 1.0 means that all
  CPUs were actively running threads from the JVM 100% of the time
  during the recent period of time observed. Threads from the JVM include
  application threads as well as JVM internal threads. All values
  between 0.0 and 1.0 are possible. The first call to the method always
  returns <a href="CpuLoadCalculationConstants.html" title="interface in com.ibm.lang.management"><code>CpuLoadCalculationConstants</code></a>.ERROR_VALUE
  (-1.0), which marks the starting point. If the Java Virtual Machine's recent CPU
  usage is not available, the method returns a negative error code from
  <a href="CpuLoadCalculationConstants.html" title="interface in com.ibm.lang.management"><code>CpuLoadCalculationConstants</code></a>.</div>
 <dl>
 <dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
 <dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/jdk.management/com/sun/management/OperatingSystemMXBean.html?is-external=true#getProcessCpuLoad()" title="class or interface in com.sun.management" class="externalLink" target="_blank">getProcessCpuLoad</a></code>&nbsp;in interface&nbsp;<code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/jdk.management/com/sun/management/OperatingSystemMXBean.html?is-external=true" title="class or interface in com.sun.management" class="externalLink" target="_blank">OperatingSystemMXBean</a></code></dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>A value between 0 and 1.0, or a negative error code from
          <a href="CpuLoadCalculationConstants.html" title="interface in com.ibm.lang.management"><code>CpuLoadCalculationConstants</code></a> in case
          of an error. On the first call to the API,
          <a href="CpuLoadCalculationConstants.html" title="interface in com.ibm.lang.management"><code>CpuLoadCalculationConstants</code></a>.ERROR_VALUE
          (-1.0) shall be returned.</dd>
 <dt><span class="simpleTagLabel">Since:</span></dt>
 <dd>1.7</dd>
 <dt><span class="seeLabel">See Also:</span></dt>
 <dd><a href="CpuLoadCalculationConstants.html" title="interface in com.ibm.lang.management"><code>CpuLoadCalculationConstants</code></a></dd>
 </dl>
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 <h4>retrieveTotalProcessorUsage</h4>
 <pre class="methodSignature"><a href="ProcessorUsage.html" title="class in com.ibm.lang.management">ProcessorUsage</a>&nbsp;retrieveTotalProcessorUsage&#8203;(<a href="ProcessorUsage.html" title="class in com.ibm.lang.management">ProcessorUsage</a>&nbsp;procObj)
                                     throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/NullPointerException.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">NullPointerException</a>,
                                            <a href="ProcessorUsageRetrievalException.html" title="class in com.ibm.lang.management">ProcessorUsageRetrievalException</a></pre>
 <div class="block">Returns an updated <a href="ProcessorUsage.html" title="class in com.ibm.lang.management"><code>ProcessorUsage</code></a> object that represents the
  current snapshot of Processor usage statistics. The snapshot is the aggregate of all
  Processors that are online at the time of sampling.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>procObj</code> - User provided <a href="ProcessorUsage.html" title="class in com.ibm.lang.management"><code>ProcessorUsage</code></a> object.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>The updated <a href="ProcessorUsage.html" title="class in com.ibm.lang.management"><code>ProcessorUsage</code></a> object.</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/NullPointerException.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">NullPointerException</a></code> - if a null reference is passed as parameter.</dd>
 <dd><code><a href="ProcessorUsageRetrievalException.html" title="class in com.ibm.lang.management">ProcessorUsageRetrievalException</a></code> - if it failed obtaining Processor usage statistics.

  <p>In case of an exception, the handler code might use toString() on the exception code
  to obtain a description of the exception.</p></dd>
 <dt><span class="simpleTagLabel">Since:</span></dt>
 <dd>1.7.1</dd>
 </dl>
 </li>
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 <pre class="methodSignature"><a href="ProcessorUsage.html" title="class in com.ibm.lang.management">ProcessorUsage</a>&nbsp;retrieveTotalProcessorUsage()
                                     throws <a href="ProcessorUsageRetrievalException.html" title="class in com.ibm.lang.management">ProcessorUsageRetrievalException</a></pre>
 <div class="block">Instantiate and return a new <a href="ProcessorUsage.html" title="class in com.ibm.lang.management"><code>ProcessorUsage</code></a> object that
  represents the current snapshot of Processor usage statistics. The snapshot is the
  aggregate of all Processors that are online at the time of sampling.</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>The new <a href="ProcessorUsage.html" title="class in com.ibm.lang.management"><code>ProcessorUsage</code></a> object.</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="ProcessorUsageRetrievalException.html" title="class in com.ibm.lang.management">ProcessorUsageRetrievalException</a></code> - if it failed obtaining Processor usage statistics.

  <p>In case of an exception, the handler code might use toString() on the exception code
  to obtain a description of the exception.</p></dd>
 <dt><span class="simpleTagLabel">Since:</span></dt>
 <dd>1.7.1</dd>
 </dl>
 </li>
 </ul>
 <a id="retrieveProcessorUsage(com.ibm.lang.management.ProcessorUsage[])">
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 <pre class="methodSignature"><a href="ProcessorUsage.html" title="class in com.ibm.lang.management">ProcessorUsage</a>[]&nbsp;retrieveProcessorUsage&#8203;(<a href="ProcessorUsage.html" title="class in com.ibm.lang.management">ProcessorUsage</a>[]&nbsp;procArray)
                                  throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/NullPointerException.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">NullPointerException</a>,
                                         <a href="ProcessorUsageRetrievalException.html" title="class in com.ibm.lang.management">ProcessorUsageRetrievalException</a>,
                                         <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">IllegalArgumentException</a></pre>
 <div class="block">Returns an updated array of <a href="ProcessorUsage.html" title="class in com.ibm.lang.management"><code>ProcessorUsage</code></a> objects
  that represent the current snapshot of individual Processor usage times.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>procArray</code> - User provided array of <a href="ProcessorUsage.html" title="class in com.ibm.lang.management"><code>ProcessorUsage</code></a> objects.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>The updated array of <a href="ProcessorUsage.html" title="class in com.ibm.lang.management"><code>ProcessorUsage</code></a> objects.</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/NullPointerException.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">NullPointerException</a></code> - if a null reference is passed as parameter.</dd>
 <dd><code><a href="ProcessorUsageRetrievalException.html" title="class in com.ibm.lang.management">ProcessorUsageRetrievalException</a></code> - if it failed obtaining Processor usage statistics.</dd>
 <dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">IllegalArgumentException</a></code> - if array provided has insufficient entries and there are more
                    Processors to report on.

  <p>In case of an exception, the handler code might use toString() on the exception code
  to obtain a description of the exception.</p></dd>
 <dt><span class="simpleTagLabel">Since:</span></dt>
 <dd>1.7.1</dd>
 </dl>
 </li>
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 <pre class="methodSignature"><a href="ProcessorUsage.html" title="class in com.ibm.lang.management">ProcessorUsage</a>[]&nbsp;retrieveProcessorUsage()
                                  throws <a href="ProcessorUsageRetrievalException.html" title="class in com.ibm.lang.management">ProcessorUsageRetrievalException</a></pre>
 <div class="block">Instantiates and returns an array of <a href="ProcessorUsage.html" title="class in com.ibm.lang.management"><code>ProcessorUsage</code></a> objects
  that represent the current snapshot of individual Processor usage times.</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>The new array of <a href="ProcessorUsage.html" title="class in com.ibm.lang.management"><code>ProcessorUsage</code></a> objects.</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="ProcessorUsageRetrievalException.html" title="class in com.ibm.lang.management">ProcessorUsageRetrievalException</a></code> - if it failed obtaining Processor usage statistics.

  <p>In case of an exception, the handler code might use toString() on the exception code
  to obtain a description of the exception.</p></dd>
 <dt><span class="simpleTagLabel">Since:</span></dt>
 <dd>1.7.1</dd>
 </dl>
 </li>
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 <a id="retrieveMemoryUsage(com.ibm.lang.management.MemoryUsage)">
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 <pre class="methodSignature"><a href="MemoryUsage.html" title="class in com.ibm.lang.management">MemoryUsage</a>&nbsp;retrieveMemoryUsage&#8203;(<a href="MemoryUsage.html" title="class in com.ibm.lang.management">MemoryUsage</a>&nbsp;memObj)
                          throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/NullPointerException.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">NullPointerException</a>,
                                 <a href="MemoryUsageRetrievalException.html" title="class in com.ibm.lang.management">MemoryUsageRetrievalException</a></pre>
 <div class="block">Returns an updated <a href="MemoryUsage.html" title="class in com.ibm.lang.management"><code>MemoryUsage</code></a> object that represents the
  current snapshot of Memory usage statistics.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>memObj</code> - User provided <a href="MemoryUsage.html" title="class in com.ibm.lang.management"><code>MemoryUsage</code></a> object.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>The updated <a href="MemoryUsage.html" title="class in com.ibm.lang.management"><code>MemoryUsage</code></a> object.</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/NullPointerException.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">NullPointerException</a></code> - if a null reference is passed as parameter.</dd>
 <dd><code><a href="MemoryUsageRetrievalException.html" title="class in com.ibm.lang.management">MemoryUsageRetrievalException</a></code> - if it failed obtaining Memory usage statistics.

  <p>In case of an exception, the handler code might use toString() on the exception code
  to obtain a description of the exception.</p></dd>
 <dt><span class="simpleTagLabel">Since:</span></dt>
 <dd>1.7.1</dd>
 </dl>
 </li>
 </ul>
 <a id="retrieveMemoryUsage()">
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 <pre class="methodSignature"><a href="MemoryUsage.html" title="class in com.ibm.lang.management">MemoryUsage</a>&nbsp;retrieveMemoryUsage()
                          throws <a href="MemoryUsageRetrievalException.html" title="class in com.ibm.lang.management">MemoryUsageRetrievalException</a></pre>
 <div class="block">Instantiates and returns an instance of <a href="MemoryUsage.html" title="class in com.ibm.lang.management"><code>MemoryUsage</code></a> object
  that represents the current snapshot of Memory usage statistics.</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>The new <a href="MemoryUsage.html" title="class in com.ibm.lang.management"><code>MemoryUsage</code></a> object.</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="MemoryUsageRetrievalException.html" title="class in com.ibm.lang.management">MemoryUsageRetrievalException</a></code> - if it failed obtaining Memory usage statistics.

  <p>In case of an exception, the handler code might use toString() on the exception code
  to obtain a description of the exception.</p></dd>
 <dt><span class="simpleTagLabel">Since:</span></dt>
 <dd>1.7.1</dd>
 </dl>
 </li>
 </ul>
 <a id="getHardwareModel()">
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 <h4>getHardwareModel</h4>
 <pre class="methodSignature"><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">String</a>&nbsp;getHardwareModel()
                  throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/UnsupportedOperationException.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">UnsupportedOperationException</a></pre>
 <div class="block">Instantiates and returns an instance of a <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank"><code>String</code></a> object containing
  hardware model information</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>The new <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank"><code>String</code></a> object or NULL in case of an error.</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/UnsupportedOperationException.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">UnsupportedOperationException</a></code> - if the operation is not implemented on this platform.
  UnsupportedOperationException will also be thrown if the operation is implemented but it
  cannot be performed because the system does not satisfy all the requirements, for example,
  an OS service is not installed.</dd>
 <dt><span class="simpleTagLabel">Since:</span></dt>
 <dd>1.7</dd>
 </dl>
 </li>
 </ul>
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 <pre class="methodSignature">boolean&nbsp;isHardwareEmulated()
                     throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/UnsupportedOperationException.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">UnsupportedOperationException</a></pre>
 <div class="block">Identify whether the underlying hardware is being emulated</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>True if it is possible to identify that the hardware is being emulated. False otherwise.</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/UnsupportedOperationException.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">UnsupportedOperationException</a></code> - if the emulated status cannot be determined</dd>
 <dt><span class="simpleTagLabel">Since:</span></dt>
 <dd>1.7</dd>
 </dl>
 </li>
 </ul>
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 <pre class="methodSignature">boolean&nbsp;isProcessRunning&#8203;(long&nbsp;pid)</pre>
 <div class="block">Indicates if the specified process is running</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>pid</code> - Operating system process ID</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>True if the specified process exists</dd>
 <dt><span class="simpleTagLabel">Since:</span></dt>
 <dd>1.8</dd>
 </dl>
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