Chart.js & CPU 性能监控
Chart.js
可视化动态 CPU 性能监控
https://github.com/gildata/RAIO/issues/337
https://github.com/chartjs/Chart.js/issues/13#issuecomment-396140908
chart.js disable animation
http://www.chartjs.org/docs/latest/developers/updates.html#preventing-animations
https://www.chartjs.org/docs/latest/developers/api.html
https://stackoverflow.com/questions/21389341/disable-animation-with-charts-js
point
http://www.chartjs.org/docs/latest/charts/line.html?h=point
http://www.chartjs.org/docs/latest/configuration/elements#point-styles
// Global point options
Chart.defaults.global.elements.point.pointStyle = "circle";
// Chart.defaults.global.elements.point.pointStyle = "line";
Chart.defaults.global.elements.point.radius = 0;
Canvas
https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/setLineDash
https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/drawImage
crossorigin="anonymous"
SRI
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.7.2/Chart.bundle.min.js " integrity="sha256-XF29CBwU1MWLaGEnsELogU6Y6rcc5nCkhhx89nFMIDQ=" crossorigin="anonymous"></script>
CPU status monitor
- disable animation
- update data
https://codepen.io/webgeeker/pen/jKBqge
https://codepen.io/webgeeker/full/KeWWZg/
https://codepen.io/webgeeker/pen/PapKOM
<!DOCTYPE html>
<html lang="zh-Hans">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<meta name="author" content="xgqfrms">
<meta name="generator" content="VS code">
<title>CPU Memory</title>
<style>
[data-box="contanier"] {
width: 300px;
height: 200px;
}
</style>
</head>
<body>
<section>
<h1>CPU Memory</h1>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.7.2/Chart.bundle.min.js " integrity="sha256-XF29CBwU1MWLaGEnsELogU6Y6rcc5nCkhhx89nFMIDQ=" crossorigin="anonymous"></script>
<section>
<div data-box="contanier">
<canvas id="myChart" width="300" height="200"></canvas>
</div>
<script>
let data = [12, 19, 3, 5, 2, 3, 12, 9, 3, 15];
var ctx = document.getElementById("myChart").getContext("2d");
var myChart = new Chart(ctx, {
// type: "bar ",
type: "line",
data: {
labels: [" ", " ", " ", " ", " ", " ", " ", " ", " ", " "],
datasets: [{
label: "CPU 使用记录",
data: data,
backgroundColor: [
"rgba(255, 99, 132, 0.2)",
"rgba(54, 162, 235, 0.2)",
"rgba(255, 206, 86, 0.2)",
"rgba(75, 192, 192, 0.2)",
"rgba(153, 102, 255, 0.2)",
"rgba(255, 159, 64, 0.2)"
],
borderColor: [
"rgba(255,99,132,1)",
"rgba(54, 162, 235, 1)",
"rgba(255, 206, 86, 1)",
"rgba(75, 192, 192, 1)",
"rgba(153, 102, 255, 1)",
"rgba(255, 159, 64, 1)"
],
borderWidth: 1,
fill: "start",
}]
},
options: {
scales: {
yAxes: [{
ticks: {
beginAtZero: true
}
}]
},
elements: {
line: {
tension: 0,
// no smooth
}
}
}
});
// update
let flag = setInterval(() => {
let newData = data[0],
oldData = data.slice(1);
oldData.push(newData)
data = [].concat(oldData);
myChart.data.datasets[0].data = data;
myChart.update(0);
// disable animation
}, 1000);
</script>
</section>
</section>
</body>
</html>
https://stackoverflow.com/questions/17354163/dynamically-update-values-of-a-chartjs-chart
null
const RA = (datas = [], num = 1, debug = false) => {
let result = "";
let str = `${datas.toString()},`;
str = str.repeat(num);
str = str.slice(0, str.length - 1);
result = str.split(`,`);
result = result.map(item => {
let newItem = "";
if (item !== "") {
newItem = (item.trim() !== "") ? parseFloat(item) : "";
}else {
newItem = null;
}
return newItem;
});
if (debug) {
console.log(`result =\n`, result);
}
return result;
};
let a = [null];
RA(a, 3);
// [null, null, null]
chart js show percentage axis labels
axis labels
https://github.com/chartjs/Chart.js/issues/3549#issuecomment-258473774
http://www.chartjs.org/docs/latest/general/options.html
https://github.com/chartjs/Chart.js/issues/545#issuecomment-271913693
https://github.com/chartjs/Chart.js/blob/master/samples/tooltips/callbacks.html
highcharts API
https://api.hcharts.cn/highcharts
bug
https://www.cnblogs.com/xgqfrms/p/9187785.html
xgqfrms 2012-2020
www.cnblogs.com 发布文章使用:只允许注册用户才可以访问!
Chart.js & CPU 性能监控的更多相关文章
- Node.js精进(9)——性能监控(上)
市面上成熟的 Node.js 性能监控系统,监控的指标有很多. 以开源的 Easy-Monitor 为例,在系统监控一栏中,指标包括内存.CPU.GC.进程.磁盘等. 这些系统能全方位的监控着应用的一 ...
- cpu和memory性能监控
cpu性能监控 #!/bin/bash column_count= i= m= is_want= str_msg=""; file_name=./test/`date +%Y-%m ...
- Linux系统和性能监控之CPU篇
Linux系统和性能监控之CPU篇 性能优化就是找到系统处理中的瓶颈以及去除这些的过程.本文由sanotes.net站长tonnyom在2009年8月翻译自Linux System and Perfo ...
- Linux系统CPU的性能监控及调优
前言: 性能优化是一个老生常谈的话题,典型的性能问题如页面响应慢.接口超时,服务器负载高.并发数低,数据库频繁死锁等.尤其是在“糙快猛”的互联网开发模式大行其道的今天,随着系统访问量的日益增加和代码的 ...
- Node.js精进(10)——性能监控(下)
本节会重点分析内存和进程奔溃,并且会给出相应的监控方法. 本系列所有的示例源码都已上传至Github,点击此处获取. 一.内存 虽然在 Node.js 中并不需要手动的对内存进行分配和销毁,但是在开发 ...
- 【转载】Linux系统与性能监控
原文地址:http://kerrigan.sinaapp.com/post-7.html Linux System and Performance Monitoring http://www.hous ...
- Linux系统与性能监控
原文地址:http://kerrigan.sinaapp.com/post-7.html Linux System and Performance Monitoring http://www.hous ...
- Ionic中使用Chart.js进行图表展示以及在iOS/Android中的性能差异
Angular Chart 简介 在之前的文章中介绍了使用 Ionic 开发跨平台(iOS & Android)应用中遇到的一些问题的解决方案. 在更新0.1.3版本的过程中遇到了需要使用图表 ...
- Linux 性能监控之CPU&内存&I/O监控Shell脚本2
Linux 性能监控之CPU&内存&I/O监控Shell脚本2 by:授客 QQ:1033553122 思路: 捕获数据->停止捕获数据->提取数据 备注:一些命令的输 ...
随机推荐
- IDEA_2019.1版本中Protobuf的使用
一.Protobuf是什么 Protobuf 是 Google 发布的开源项目,全称 Google Protocol(/'prəʊtəkɒl/,协议,草案) Buffers,是一种轻便高效的结构化数据 ...
- using-pointers-to-remove-item-from-singly-linked-list
https://stackoverflow.com/questions/12914917/using-pointers-to-remove-item-from-singly-linked-list
- is == id ,编码
一. id 查询内存地址. # name = 'alex' # print(id(name)) # name1 = 'alex' # name2 = 'alex' # print(name1 == n ...
- CF1428C
Description 有一个只包含'A'与'B'的字符串,每次可以消掉一个 "AB" 或一个 "BB",并把剩下的拼在一起,求字符串最短的长度. 题意已经够简 ...
- POJ 3461__KMP算法
[题目描述] 法国作家乔治·佩雷克(Georges Perec,1936-1982)曾经写过一本书,<敏感字母>(La disparition),全篇没有一个字母'e'.他是乌力波小组(O ...
- Centos7部署FytSoa项目至Docker——第三步:部署程序
FytSoa项目地址:https://gitee.com/feiyit/FytSoaCms 部署完成地址:http://82.156.127.60:8000/ 我买的是一年99标准型SA2云服务器 购 ...
- js将金额转成大写金额
function Chinese(){ /* var num= $(dialogStruct.iframe.contentDocument.getElementById("contractA ...
- JavaScript 、TypeScript 中的 Boolean
boolean 是 JavaScript 中一种有趣的原始数据类型.在TypeScript中,非严格模式下("strictNullChecks": false),它总共允许4个值 ...
- Centos 7 安装nginx指定版本
官方版本列表:http://nginx.org/download/ 1.安装 wget http://nginx.org/download/nginx-1.10.3.tar.gz tar -zxvf ...
- 【一天一个基础系列】- java之泛型篇
简介 说起各种高级语言,不得不谈泛型,当我们在使用java集合的时候,会发现集合有个缺点:把一个对象"丢进"集合之后,集合就会"忘记"这个对象的数据类型,当再次 ...