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apache / iotdb-website / 25a3b7c33dd53a6870626940f8b3d142cdfc83fc / . / assets / js / 479.3e21eec2.js
blob: 66fca760d5c887d8b9922ab0d185c88ea5e47386 [file] [log] [blame]
(window.webpackJsonp=window.webpackJsonp||[]).push([[479],{1044:function(t,e,_){"use strict";_.r(e);var a=_(69),l=Object(a.a)({},(function(){var t=this,e=t.$createElement,_=t._self._c||e;return _("ContentSlotsDistributor",{attrs:{"slot-key":t.$parent.slotKey}},[_("h1",{attrs:{id:"系统监控"}},[_("a",{staticClass:"header-anchor",attrs:{href:"#系统监控"}},[t._v("#")]),t._v(" 系统监控")]),t._v(" "),_("p",[t._v("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。")]),t._v(" "),_("h2",{attrs:{id:"系统状态监控"}},[_("a",{staticClass:"header-anchor",attrs:{href:"#系统状态监控"}},[t._v("#")]),t._v(" 系统状态监控")]),t._v(" "),_("p",[t._v("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"),_("a",{attrs:{href:"https://docs.oracle.com/javase/7/docs/technotes/guides/management/jconsole.html",target:"_blank",rel:"noopener noreferrer"}},[t._v("堆内存信息、线程信息、类信息以及服务器的CPU使用情况"),_("OutboundLink")],1),t._v("。")]),t._v(" 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"),_("blockquote",[_("p",[t._v("其中，<storage_group_name> 为所需进行数据统计的存储组名称，存储组中的“.”使用“_”代替。例如：名为'root.a.b'的存储组命名为：'root_a_b'。")])]),t._v(" "),_("p",[t._v("下面为您展示两个具体的例子。用户可以通过"),_("code",[t._v("SELECT")]),t._v("语句查询自己所需要的写入数据统计项。（查询方法与普通的时间序列查询方式一致）")]),t._v(" "),_("p",[t._v("我们以查询全局统计量总写入成功数（"),_("code",[t._v("TOTAL_POINTS_SUCCES")]),t._v("）为例，用IoTDB SELECT语句查询它的值。SQL语句如下：")]),t._v(" "),_("div",{staticClass:"language- line-numbers-mode"},[_("pre",{pre:!0,attrs:{class:"language-text"}},[_("code",[t._v("select TOTAL_POINTS_SUCCESS from root.stats.write.global\n")])]),t._v(" "),_("div",{staticClass:"line-numbers-wrapper"},[_("span",{staticClass:"line-number"},[t._v("1")]),_("br")])]),_("p",[t._v("我们以查询存储组root.ln的统计量总写入成功数（"),_("code",[t._v("TOTAL_POINTS_SUCCESS")]),t._v("）为例，用IoTDB SELECT语句查询它的值。SQL语句如下：")]),t._v(" "),_("div",{staticClass:"language- line-numbers-mode"},[_("pre",{pre:!0,attrs:{class:"language-text"}},[_("code",[t._v("select TOTAL_POINTS_SUCCESS from 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