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55 lines
2.7 KiB
HTML
55 lines
2.7 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<meta http-equiv="content-type" content="text/html; charset=UTF-8">
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<title>以采样模式启动 XHProf 性能分析</title>
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</head>
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<body class="docs"><div id="layout">
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<div id="layout-content"><div id="function.xhprof-sample-enable" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">xhprof_sample_enable</h1>
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<p class="verinfo">(PECL xhprof >= 0.9.0)</p><p class="refpurpose"><span class="refname">xhprof_sample_enable</span> — <span class="dc-title">以采样模式启动 XHProf 性能分析</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.xhprof-sample-enable-description">
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<h3 class="title">说明</h3>
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<div class="methodsynopsis dc-description">
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<span class="methodname"><strong>xhprof_sample_enable</strong></span>
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( <span class="methodparam">void</span>
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) : <span class="type"><span class="type void">void</span></span></div>
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<p class="para rdfs-comment">
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<span class="function"><a href="xhprof_enable.html" class="function">xhprof_enable()</a></span> 的更轻量的版本，以采样模式开始性能分析。
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抽样的间隔为 0.1 秒，样本记录了完整的函数调用堆栈。
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主要使用的情况是以较低的性能开销来进行性能监控和诊断。
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.xhprof-sample-enable-parameters">
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<h3 class="title">参数</h3>
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<p class="para">此函数没有参数。</p>
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</div>
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<div class="refsect1 returnvalues" id="refsect1-function.xhprof-sample-enable-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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<strong><code>NULL</code></strong>
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</p>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.xhprof-sample-enable-seealso">
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<h3 class="title">参见</h3>
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<ul class="simplelist">
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<li class="member"><span class="function"><a href="xhprof_sample_disable.html" class="function" rel="rdfs-seeAlso">xhprof_sample_disable()</a> - 停止 xhprof 性能采样分析器</span></li>
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<li class="member"><span class="function"><a href="xhprof_enable.html" class="function" rel="rdfs-seeAlso">xhprof_enable()</a> - 启动 xhprof 性能分析器</span></li>
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<li class="member"><span class="function"><a href="memory_get_usage.html" class="function" rel="rdfs-seeAlso">memory_get_usage()</a> - 返回分配给 PHP 的内存量</span></li>
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<li class="member"><span class="function"><a href="getrusage.html" class="function" rel="rdfs-seeAlso">getrusage()</a> - 获取当前资源使用状况</span></li>
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</ul>
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</div>
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</div></div></div></body></html> |