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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Specific options for the metric engine to create or open a region."><title>metric_engine::engine::options - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2"href="../../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../../static.files/rustdoc-17e0aaed.css"><meta name="rustdoc-vars" data-root-path="../../../" data-static-root-path="../../../static.files/" data-current-crate="metric_engine" data-themes="" data-resource-suffix="" data-rustdoc-version="1.96.0-nightly (ac7f9ec7d 2026-03-20)" data-channel="nightly" data-search-js="search-63369b7b.js" data-stringdex-js="stringdex-2da4960a.js" data-settings-js="settings-170eb4bf.js" ><script src="../../../static.files/storage-41dd4d93.js"></script><script defer src="../sidebar-items.js"></script><script defer src="../../../static.files/main-5013f961.js"></script><noscript><link rel="stylesheet" href="../../../static.files/noscript-f7c3ffd8.css"></noscript><link rel="alternate icon" type="image/png" href="../../../static.files/favicon-32x32-eab170b8.png"><link rel="icon" type="image/svg+xml" href="../../../static.files/favicon-044be391.svg"></head><body class="rustdoc mod"><a class="skip-main-content" href="#main-content">Skip to main content</a><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><rustdoc-topbar><h2><a href="#">Module options</a></h2></rustdoc-topbar><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../../../metric_engine/index.html">metric_<wbr>engine</a><span class="version">1.0.0</span></h2></div><div class="sidebar-elems"><section id="rustdoc-toc"><h2 class="location"><a href="#">Module options</a></h2><h3><a href="#structs">Module Items</a></h3><ul class="block"><li><a href="#structs" title="Structs">Structs</a></li><li><a href="#enums" title="Enums">Enums</a></li><li><a href="#constants" title="Constants">Constants</a></li><li><a href="#functions" title="Functions">Functions</a></li></ul></section><div id="rustdoc-modnav"><h2><a href="../index.html">In metric_<wbr>engine::<wbr>engine</a></h2></div></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><div class="width-limiter"><section id="main-content" class="content" tabindex="-1"><div class="main-heading"><div class="rustdoc-breadcrumbs"><a href="../../index.html">metric_engine</a>::<wbr><a href="../index.html">engine</a></div><h1>Module <span>options</span> <button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><rustdoc-toolbar></rustdoc-toolbar><span class="sub-heading"><a class="src" href="../../../src/metric_engine/engine/options.rs.html#15-234">Source</a> </span></div><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Specific options for the metric engine to create or open a region.</p>
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</div></details><h2 id="structs" class="section-header">Structs<a href="#structs" class="anchor">§</a></h2><dl class="item-table"><dt><a class="struct" href="struct.PhysicalRegionOptions.html" title="struct metric_engine::engine::options::PhysicalRegionOptions">Physical<wbr>Region<wbr>Options</a></dt><dd>Physical region options.</dd></dl><h2 id="enums" class="section-header">Enums<a href="#enums" class="anchor">§</a></h2><dl class="item-table"><dt><a class="enum" href="enum.IndexOptions.html" title="enum metric_engine::engine::options::IndexOptions">Index<wbr>Options</a></dt><dd>Index options for auto created columns</dd></dl><h2 id="constants" class="section-header">Constants<a href="#constants" class="anchor">§</a></h2><dl class="item-table"><dt><a class="constant" href="constant.DEFAULT_DATA_REGION_COMPACTION_TIME_WINDOW.html" title="constant metric_engine::engine::options::DEFAULT_DATA_REGION_COMPACTION_TIME_WINDOW">DEFAULT_<wbr>DATA_<wbr>REGION_<wbr>COMPACTION_<wbr>TIME_<wbr>WINDOW</a><span title="Restricted Visibility"> 🔒</span> </dt><dd>The default compaction time window for metric engine data regions.</dd><dt><a class="constant" href="constant.SEG_ROW_COUNT_FOR_DATA_REGION.html" title="constant metric_engine::engine::options::SEG_ROW_COUNT_FOR_DATA_REGION">SEG_<wbr>ROW_<wbr>COUNT_<wbr>FOR_<wbr>DATA_<wbr>REGION</a><span title="Restricted Visibility"> 🔒</span> </dt><dd>The empirical value for the seg row count of the metric data region.
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Compared to the mito engine, the pattern of the metric engine constructs smaller indices.
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Therefore, compared to the default seg row count of 1024, by adjusting it to a smaller
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value and appropriately increasing the size of the index, it results in an improved indexing effect.</dd></dl><h2 id="functions" class="section-header">Functions<a href="#functions" class="anchor">§</a></h2><dl class="item-table"><dt><a class="fn" href="fn.set_data_region_options.html" title="fn metric_engine::engine::options::set_data_region_options">set_<wbr>data_<wbr>region_<wbr>options</a></dt><dd>Sets data region specific options.</dd></dl></section></div></main></body></html> |