[GitHub] [incubator-iotdb] jt2594838 commented on a change in pull request #256: [IOTDB-141]Develop memory estimate tool

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jt2594838 commented on a change in pull request #256: [IOTDB-141]Develop memory estimate tool
URL: https://github.com/apache/incubator-iotdb/pull/256#discussion_r304713925
 
 

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 File path: docs/Documentation-CHN/UserGuideV0.7.0/7-System Tools/2-Memory Estimation Tool.md
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+
+# 内存预估工具
+
+<!-- TOC -->
+
+- [内存预估工具](#内存预估工具)
+- [介绍](#介绍)
+- [输入参数](#输入参数)
+- [使用方式](#使用方式)
+
+<!-- /TOC -->
+
+# 介绍
+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。
+
+# 输入参数
+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 &lt;storage group number&gt;</td>
+      <td>存储组数量</td>
+      <td>-sg 20</td>
+      <td>是</td>
+   </tr>
+   <tr>
+      <td>-ts | --timeseries &lt;total timeseries number&gt;</td>
+      <td>总时间序列数量</td>
+      <td>-ts 10000</td>
+      <td>是</td>
+   </tr>
+   <tr>
+      <td>-mts | --maxtimeseries &lt;max timeseries&gt;</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>
+
+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。
+
+# 使用方式
+
+用户可以使用```$IOTDB_HOME/bin```文件夹下的脚本使用该工具
+Linux系统与MacOS系统启动命令如下：
+* 以20个存储组，共10w条时间序列，时间序列在存储组中均分为例：
+```
+  Shell >$IOTDB_HOME/bin/memory-tool.sh -sg 20 -ts 100000 calmem
 
 Review comment:
   Where is the parameter "calmem" mentioned, are there other modes?

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