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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 (In progress)</span> <!----></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>IoTDB简介</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>快速上手</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>数据模式与概念</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>语法约定</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>应用编程接口</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>元数据操作</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>数据写入和删除</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>数据查询</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>数据处理</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>权限管理</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading open"><span>运维工具</span> <span class="arrow down"></span></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/zh/UserGuide/Master/Maintenance-Tools/Maintenance-Command.html" class="sidebar-link">运维命令</a></li><li><a href="/zh/UserGuide/Master/Maintenance-Tools/Monitor-and-Log-Tools.html" aria-current="page" class="active sidebar-link">监控工具和系统日志</a></li><li><a href="/zh/UserGuide/Master/Maintenance-Tools/JMX-Tool.html" class="sidebar-link">JMX 工具</a></li><li><a href="/zh/UserGuide/Master/Maintenance-Tools/MLogParser-Tool.html" class="sidebar-link">Mlog解析工具</a></li><li><a href="/zh/UserGuide/Master/Maintenance-Tools/NodeTool.html" class="sidebar-link">节点工具</a></li><li><a href="/zh/UserGuide/Master/Maintenance-Tools/Watermark-Tool.html" class="sidebar-link">水印工具</a></li><li><a href="/zh/UserGuide/Master/Maintenance-Tools/Metric-Tool.html" class="sidebar-link">监控工具</a></li><li><a href="/zh/UserGuide/Master/Maintenance-Tools/Sync-Tool.html" class="sidebar-link">TsFile 同步工具</a></li><li><a href="/zh/UserGuide/Master/Maintenance-Tools/TsFile-Split-Tool.html" class="sidebar-link">TsFile 拆分工具</a></li></ul></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>系统集成</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>分布式</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>UDF 资料库</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>参考</span> <span class="arrow right"></span></p> <!----></section></li></ul> </aside> <main class="page"> <div class="content content__default"><h2 id="监控工具"><a href="#监控工具" class="header-anchor">#</a> 监控工具</h2> <h3 id="系统监控"><a href="#系统监控" class="header-anchor">#</a> 系统监控</h3> <p>当前用户可以使用 Java 的 JConsole 工具对正在运行的 IoTDB 进程进行系统状态监控，或使用 IoTDB 为用户开放的接口查看数据统计量。</p> <h4 id="系统状态监控"><a href="#系统状态监控" class="header-anchor">#</a> 系统状态监控</h4> <p>进入 Jconsole 监控页面后，首先看到的是 IoTDB 各类运行情况的概览。在这里，您可以看到堆内存信息、线程信息、类信息以及服务器的 CPU 使用情况。</p> <h4 id="jmx-mbean-监控"><a href="#jmx-mbean-监控" class="header-anchor">#</a> JMX MBean 监控</h4> <p>通过使用 JConsole 工具并与 JMX 连接，您可以查看一些系统统计信息和参数。 |
| 本节描述如何使用 JConsole 的 "Mbean" 选项卡来监视 IoTDB 的一些系统配置、写入数据统计等等。 连接到 JMX 后，您可以通过 "MBeans" 标签找到名为 "org.apache.iotdb.service" 的 "MBean"，如下图所示。</p> <p><img src="https://user-images.githubusercontent.com/46039728/149951720-707f1ee8-32ee-4fde-9252-048caebd232e.png" style="width:100%;max-width:800px;max-height:600px;margin-left:auto;margin-right:auto;display:block;"> <br></p> <h4 id="系统监控框架监控"><a href="#系统监控框架监控" class="header-anchor">#</a> 系统监控框架监控</h4> <p><a href="/zh/UserGuide/Master/Maintenance-Tools/Metric-Tool.html">监控工具</a></p> <h3 id="性能监控"><a href="#性能监控" class="header-anchor">#</a> 性能监控</h3> <h4 id="介绍"><a href="#介绍" class="header-anchor">#</a> 介绍</h4> <p>性能监控模块用来监控 IOTDB 每一个操作的耗时，以便用户更好的了解数据库的整体性能。此模块会统计每一种操作的平均耗时，以及耗时在一定时间区间内（1ms，4ms，16ms，64ms，256ms，1024ms，以上）的操作的比例。输出文件在 log_measure.log 中。输出样例如下：</p> <img src="https://user-images.githubusercontent.com/13203019/60937461-14296f80-a303-11e9-9602-a7bed624bfb3.png" style="width:100%;max-width:800px;max-height:600px;margin-left:auto;margin-right:auto;display:block;"> <h4 id="配置参数"><a href="#配置参数" class="header-anchor">#</a> 配置参数</h4> <p>配置文件位置：conf/iotdb-datanode.properties</p> <center><p><strong>表 -配置参数以及描述项</strong></p> <table><thead><tr><th style="text-align:left;">参数</th> <th style="text-align:left;">默认值</th> <th style="text-align:left;">描述</th></tr></thead> <tbody><tr><td style="text-align:left;">enable_performance_stat</td> <td style="text-align:left;">false</td> <td style="text-align:left;">是否开启性能监控模块</td></tr></tbody></table></center> <h3 id="cache-命中率统计"><a href="#cache-命中率统计" class="header-anchor">#</a> cache 命中率统计</h3> <h4 id="概述"><a href="#概述" class="header-anchor">#</a> 概述</h4> <p>为了提高查询性能，IOTDB 对 ChunkMetaData 和 TsFileMetaData 进行了缓存。用户可以通过 debug 级别的日志以及 MXBean 两种方式来查看缓存的命中率，并根据缓存命中率以及系统内存来调节缓存所使用的内存大小。使用 MXBean 查看缓存命中率的方法为：</p> <ol><li>通过端口 31999 连接 jconsole，并在上方菜单项中选择‘MBean’.</li> <li>展开侧边框并选择 'org.apache.iotdb.db.service'. 将会得到如下图所示结果：</li></ol> <img src="https://user-images.githubusercontent.com/19167280/112426760-73e3da80-8d73-11eb-9a8f-9232d1f2033b.png" style="width:100%;max-width:800px;max-height:600px;margin-left:auto;margin-right:auto;display:block;"> <h2 id="系统日志"><a href="#系统日志" class="header-anchor">#</a> 系统日志</h2> <p>IoTDB 支持用户通过修改日志配置文件的方式对 IoTDB 系统日志（如日志输出级别等）进行配置，系统日志配置文件默认位置在$IOTDB_HOME/conf 文件夹下，默认的日志配置文件名为 logback.xml。用户可以通过增加或更改其中的 xml 树型节点参数对系统运行日志的相关配置进行修改。详细配置说明参看本文日志文件配置说明。</p> <p>同时，为了方便在系统运行过程中运维人员对系统的调试，我们为系统运维人员提供了动态修改日志配置的 JMX 接口，能够在系统不重启的前提下实时对系统的 Log 模块进行配置。详细使用方法参看动态系统日志配置说明）。</p> <h3 id="动态系统日志配置说明"><a href="#动态系统日志配置说明" class="header-anchor">#</a> 动态系统日志配置说明</h3> <h4 id="连接-jmx"><a href="#连接-jmx" class="header-anchor">#</a> 连接 JMX</h4> <p>本节以 Jconsole 为例介绍连接 JMX 并进入动态系统日志配置模块的方法。启动 Jconsole 控制页面，在新建连接处建立与 IoTDB Server 的 JMX 连接（可以选择本地进程或给定 IoTDB 的 IP 及 PORT 进行远程连接，IoTDB 的 JMX 服务默认运行端口为 31999），如下图使用远程进程连接 Localhost 下运行在 31999 端口的 IoTDB JMX 服务。</p> <img src="https://user-images.githubusercontent.com/13203019/51577195-f94d7500-1ef3-11e9-999a-b4f67055d80e.png" style="width:100%;max-width:800px;max-height:600px;margin-left:auto;margin-right:auto;display:block;"> <p>连接到 JMX 后，您可以通过 MBean 选项卡找到名为<code>ch.qos.logback.classic</code>的<code>MBean</code>，如下图所示。</p> <img src="https://user-images.githubusercontent.com/13203019/51577204-fe122900-1ef3-11e9-9e89-2eb1d46e24b8.png" style="width:100%;max-width:800px;max-height:600px;margin-left:auto;margin-right:auto;display:block;"> <p>在<code>ch.qos.logback.classic</code>的 MBean 操作（Operations）选项中，可以看到当前动态系统日志配置支持的 6 种接口，您可以通过使用相应的方法，来执行相应的操作，操作页面如图。</p> <img src="https://user-images.githubusercontent.com/13203019/51577216-09fdeb00-1ef4-11e9-9005-542ad7d9e9e0.png" style="width:100%;max-width:800px;max-height:600px;margin-left:auto;margin-right:auto;display:block;"> <h4 id="动态系统日志接口说明"><a href="#动态系统日志接口说明" class="header-anchor">#</a> 动态系统日志接口说明</h4> <ul><li>reloadDefaultConfiguration 接口</li></ul> <p>该方法为重新加载默认的 logback 配置文件，用户可以先对默认的配置文件进行修改，然后调用该方法将修改后的配置文件重新加载到系统中，使其生效。</p> <ul><li>reloadByFileName 接口</li></ul> <p>该方法为加载一个指定路径的 logback 配置文件，并使其生效。该方法接受一个名为 p1 的 String 类型的参数，该参数为需要指定加载的配置文件路径。</p> <ul><li>getLoggerEffectiveLevel 接口</li></ul> <p>该方法为获取指定 Logger 当前生效的日志级别。该方法接受一个名为 p1 的 String 类型的参数，该参数为指定 Logger 的名称。该方法返回指定 Logger 当前生效的日志级别。</p> <ul><li>getLoggerLevel 接口</li></ul> <p>该方法为获取指定 Logger 的日志级别。该方法接受一个名为 p1 的 String 类型的参数，该参数为指定 Logger 的名称。该方法返回指定 Logger 的日志级别。</p> <p>需要注意的是，该方法与<code>getLoggerEffectiveLevel</code>方法的区别在于，该方法返回的是指定 Logger 在配置文件中被设定的日志级别，如果用户没有对该 Logger 进行日志级别的设定，则返回空。按照 Logback 的日志级别继承机制，如果一个 Logger 没有被显示地设定日志级别，其将会从其最近的祖先继承日志级别的设定。这时，调用<code>getLoggerEffectiveLevel</code>方法将返回该 Logger 生效的日志级别；而调用本节所述方法，将返回空。</p> <ul><li>setLoggerLevel 接口</li></ul> <p>该方法为设置指定 Logger 的日志级别。该方法接受一个名为 p1 的 String 类型的参数和一个名为 p2 的 String 类型的参数，分别指定 Logger 的名称和目标的日志等级。</p></div> <div class="page-nav"><p class="inner"><span class="prev"> |
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