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      Standard options
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      -Xgc:splitheap
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      -Xnuma:none
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<h1 id="-xrs">-Xrs</h1>
<p>Prevents the OpenJ9 runtime environment from handling any internally or externally generated signals such as <code>SIGSEGV</code> and <code>SIGABRT</code>. Any signals that are raised are handled by the default operating system handlers, which you might want if you are using a debugger such as GDB or WinDbg to diagnose problems in JNI code.</p>
<p>Disabling signal handling in the OpenJ9 VM reduces performance by approximately 2-4%, depending on the application.</p>
<p><i class="fa fa-pencil-square-o" aria-hidden="true"></i> <strong>Note:</strong> Setting this option prevents dumps being generated by the OpenJ9 VM for signals such as <code>SIGSEGV</code> and <code>SIGABRT</code>, because the VM is no longer intercepting these signals. Do not use the <code>-Xrs</code> and <a href="../xxhandlesigabrt/"><code>-XX:+HandleSIGABRT</code></a> options together. An error is thrown if both options are enabled. To resolve this error, one of the options should be disabled.</p>
<h2 id="syntax">Syntax</h2>
<pre><code>    -Xrs
    -Xrs:sync
</code></pre>
<h2 id="parameters">Parameters</h2>
<dl>
<dd>
<p>If you specify the <code>sync</code> parameter:</p>
<ul>
<li><strong>On AIX&reg;, Linux&reg;, macOS&reg;, and z/OS&reg; systems:</strong> Disables signal handling in the VM for <code>SIGSEGV</code>, <code>SIGFPE</code>, <code>SIGBUS</code>, <code>SIGILL</code>, <code>SIGTRAP</code>, and <code>SIGABRT</code> signals. However, the VM still handles the <code>SIGQUIT</code> and <code>SIGTERM</code> signals, among others.</li>
<li><strong>On Windows&trade; systems:</strong> Hardware exceptions are not handled by the OpenJ9 VM when this option is specified. However, the Windows CTRL_BREAK_EVENT signal, triggered by the Ctrl-Break key combination, is still handled by the VM.</li>
</ul>
<p><strong>Linux and macOS systems</strong> always use the <code>SIGUSR1</code> signal.</p>
</dd>
</dl>
<h2 id="see-also">See also</h2>
<ul>
<li><a href="../openj9_signals/">Signal handling</a></li>
</ul>
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