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<!--
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Licensed to the Apache Software Foundation (ASF) under one
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or more contributor license agreements. See the NOTICE file
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distributed with this work for additional information
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regarding copyright ownership. The ASF licenses this file
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to you under the Apache License, Version 2.0 (the
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"License"); you may not use this file except in compliance
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with the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing,
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software distributed under the License is distributed on an
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"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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KIND, either express or implied. See the License for the
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specific language governing permissions and limitations
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under the License.
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-->
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<!doctype html>
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<html>
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<head>
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<meta charset='utf-8'>
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<title>Downsample Comparasions</title>
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<meta name='viewport' content='width=device-width, initial-scale=1'>
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</head>
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<body>
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<style>
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.chart {
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width: 800px;
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height: 400px;
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}
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</style>
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<h2 id='status'>Loading lib....</h2>
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<div id='container'></div>
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<script src='lib/esl.js'></script>
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<script src='lib/config.js'></script>
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<script>
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require([
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'echarts'
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// 'echarts/chart/sankey',
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// 'echarts/component/tooltip'
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], function (echarts) {
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function round2(val) {
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return Math.round(val * 100) / 100;
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}
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function round3(val) {
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return Math.round(val * 1000) / 1000;
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}
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function prepData(packed) {
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console.time('prep');
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// epoch,idl,recv,send,read,writ,used,free
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var numFields = packed[0];
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packed = packed.slice(numFields + 1);
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var repeatTimes = 5;
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var data = new Float64Array((packed.length / numFields) * 4 * repeatTimes);
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var off = 0;
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var date = packed[0];
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for (let repeat = 0; repeat < repeatTimes; repeat++) {
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for (let i = 0, j = 0; i < packed.length; i += numFields, j++) {
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date += 1;
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data[off++] = date * 60 * 1000;
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data[off++] = round3(100 - packed[i + 1]);
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data[off++] = round2(
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(100 * packed[i + 5]) / (packed[i + 5] + packed[i + 6])
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);
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data[off++] = packed[i + 3];
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}
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}
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console.timeEnd('prep');
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return data;
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}
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function makeChart(data, title, sampling) {
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var container = document.getElementById('container');
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var dom = document.createElement('div');
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var titleDom = document.createElement('h3');
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dom.classList.add('chart');
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if (title !== 'warmup') {
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container.appendChild(titleDom);
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container.appendChild(dom);
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}
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var myChart = echarts.init(dom, null, {
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width: 800,
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height: 400
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});
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titleDom.innerHTML = title;
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let opts = {
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animation: false,
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dataset: {
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source: data,
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dimensions: ['date', 'cpu', 'ram', 'tcpout']
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},
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tooltip: {
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trigger: 'axis'
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},
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legend: {},
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grid: {
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containLabel: true,
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left: 0,
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top: 50,
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right: 0,
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bottom: 30
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},
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xAxis: {
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type: 'time'
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},
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yAxis: [{
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type: 'value',
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max: 100,
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axisLabel: {
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formatter: '{value} %'
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}
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}, {
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type: 'value',
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max: 100,
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axisLabel: {
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formatter: '{value} MB'
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}
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}],
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series: [{
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name: 'CPU',
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type: 'line',
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showSymbol: false,
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sampling: sampling,
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lineStyle: { width: 1 },
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emphasis: { lineStyle: { width: 1 } },
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encode: {
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x: 'date',
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y: 'cpu'
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}
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}, {
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name: 'RAM',
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type: 'line',
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yAxisIndex: 1,
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showSymbol: false,
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sampling: sampling,
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lineStyle: { width: 1 },
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emphasis: { lineStyle: { width: 1 } },
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encode: {
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x: 'date',
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y: 'ram'
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}
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}, {
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name: 'TCP Out',
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type: 'line',
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yAxisIndex: 1,
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showSymbol: false,
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sampling: sampling,
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lineStyle: { width: 1 },
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emphasis: { lineStyle: { width: 1 } },
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encode: {
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x: 'date',
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y: 'tcpout'
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}
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}]
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};
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const startTime = performance.now();
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myChart.setOption(opts, {
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notMerge: true
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});
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const endTime = performance.now();
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titleDom.innerHTML = `${title}(${data.length / 4 * 3}) ${(endTime - startTime).toFixed(0)} ms`;
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}
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let status = document.getElementById('status');
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status.textContent = 'Fetching data.json (2.07MB)....';
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fetch('data/large-data.json')
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.then(r => r.json())
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.then(packed => {
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status.textContent = 'Warming up';
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let data = prepData(packed);
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setTimeout(function () {
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for (let i = 0; i < 5; i++) {
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makeChart(data, 'warmup');
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makeChart(data, 'warmup', 'lttb');
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makeChart(data, 'warmup', 'average');
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makeChart(data, 'warmup', 'max');
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}
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status.textContent = 'Running';
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setTimeout(() => makeChart(data, 'No Sampling', null), 500);
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setTimeout(() => makeChart(data, 'LTTB Sampling', 'lttb'), 1000);
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setTimeout(() => makeChart(data, 'Max Sampling', 'max'), 1500);
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setTimeout(() => makeChart(data, 'Average Sampling', 'average'), 1500);
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});
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});
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});
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</script>
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</body>
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</html>
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