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| <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></nav> <ul class="sidebar-links"><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>IoTDB用户手册 (v0.10.x)</span> <!----></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>开始</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>概述</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>概念</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>服务器端</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>客户端</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>操作指南</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading open"><span>系统工具</span> <span class="arrow down"></span></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/zh/UserGuide/V0.10.x/System Tools/Sync Tool.html" class="sidebar-link">同步工具</a></li><li><a href="/zh/UserGuide/V0.10.x/System Tools/Memory Estimation Tool.html" class="active sidebar-link">内存预估</a></li><li><a href="/zh/UserGuide/V0.10.x/System Tools/JMX Tool.html" class="sidebar-link">JMX工具</a></li><li><a href="/zh/UserGuide/V0.10.x/System Tools/Watermark Tool.html" class="sidebar-link">水印工具</a></li><li><a href="/zh/UserGuide/V0.10.x/System Tools/Query History Visualization Tool.html" class="sidebar-link">查询历史可视化工具</a></li><li><a href="/zh/UserGuide/V0.10.x/System Tools/Monitor and Log Tools.html" class="sidebar-link">监控与日志工具</a></li><li><a href="/zh/UserGuide/V0.10.x/System Tools/Load External Tsfile.html" class="sidebar-link">加载外部tsfile文件</a></li></ul></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>生态集成</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>系统设计</span> <span class="arrow right"></span></p> <!----></section></li></ul> </aside> <main class="page"> <div class="content content__default"><h1 id="内存预估"><a href="#内存预估" class="header-anchor">#</a> 内存预估</h1> <ul><li><a href="#%E5%86%85%E5%AD%98%E9%A2%84%E4%BC%B0%E5%B7%A5%E5%85%B7">内存预估工具</a></li> <li><a href="#%E4%BB%8B%E7%BB%8D">介绍</a></li> <li><a href="#%E8%BE%93%E5%85%A5%E5%8F%82%E6%95%B0">输入参数</a></li> <li><a href="#%E4%BD%BF%E7%94%A8%E6%96%B9%E5%BC%8F">使用方式</a></li></ul> <h1 id="介绍"><a href="#介绍" class="header-anchor">#</a> 介绍</h1> <p>本工具通过用户输入的若干参数，计算出IoTDB运行此负载的最小写内存。(IoTDB中的内存分为三部分：写内存，读内存，预留内存。写内存是用于数据写入分配的内存，三者的比例可在配置文件中设置)，结果以GB为单位。</p> <h1 id="输入参数"><a href="#输入参数" class="header-anchor">#</a> 输入参数</h1> <p>本工具使用时，需要输入的参数如下: |
| <table><tr><td>参数名</td> <td>参数说明</td> <td>示例</td> <td>是否必需</td></tr> <tr><td>-sg | --storagegroup <storage group number></td> <td>存储组数量</td> <td>-sg 20</td> <td>是</td></tr> <tr><td>-ts | --timeseries <total timeseries number></td> <td>总时间序列数量</td> <td>-ts 10000</td> <td>是</td></tr> <tr><td>-mts | --maxtimeseries <max timeseries></td> <td>存储组中的最大时间序列的数量，如果时间序列均匀分配在存储组中，本参数可以不设置</td> <td>-mts 10000</td> <td>否</td></tr></table></p> <p>在内存预估时，若工具计算需要较长的时间，则会在下方显示出运行进度，便于用户掌握进度。</p> <h1 id="使用方式"><a href="#使用方式" class="header-anchor">#</a> 使用方式</h1> <p>用户可以使用<code>$IOTDB_HOME/bin</code>文件夹下的脚本使用该工具 |
| Linux系统与MacOS系统启动命令如下：</p> <ul><li>以20个存储组，共10w条时间序列，时间序列在存储组中均分为例：</li></ul> <div class="language- line-numbers-mode"><pre class="language-text"><code> Shell >$IOTDB_HOME/bin/memory-tool.sh calmem -sg 20 -ts 100000 |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><ul><li>以20个存储组，共10w条时间序列，存储组中最大时间序列数为50000为例：</li></ul> <div class="language- line-numbers-mode"><pre class="language-text"><code> Shell >$IOTDB_HOME/bin/memory-tool.sh calmem -sg 20 -ts 100000 -mts -50000 |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><p>Windows系统启动命令如下：</p> <ul><li>以20个存储组，共10w条时间序列，时间序列在存储组中均分为例：</li></ul> <div class="language- line-numbers-mode"><pre class="language-text"><code> Shell >$IOTDB_HOME\bin\memory-tool.bat calmem -sg 20 -ts 100000 |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><ul><li>以20个存储组，共10w条时间序列，存储组中最大时间序列数为50000为例：</li></ul> <div class="language- line-numbers-mode"><pre class="language-text"><code> Shell >$IOTDB_HOME\bin\memory-tool.bat calmem -sg 20 -ts 100000 -mts -50000 |
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