100pah edited a comment on issue #12229: Crashing Safari and reload page URL: https://github.com/apache/incubator-echarts/issues/12229#issuecomment-596005138 <del>It is probably a Safari issue: When both using gradient color and shadow to in HTML Canvas rendering at the first time, the memory will increase to over 1GB instantly, which might crash the Safari. </del> Update: It is not a Safari issue but a echarts defect. the reason of this issue will be elaborate in the next post. @qipkiller , (A) or (B) can temporarily avoid this issue: (A) Do not use **gradient color** and **shadow** at the same time. That is, in your demo, do not use `echarts.graphic.LinearGradient` and `shadowColor`/`shadowBlue` at the same time. (B) Disable the animation. Set `option.animation: false`. Other info: I have simplified it to a minimal case for this issue: ```html <!DOCTYPE html> <html> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1" /> <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/echarts.min.js";></script> </head> <body> <style> .title { font-size: 18px; padding: 5px; } .strong { color:red; } </style> <div class="title"> 1. Open the page in <span class="strong">Safari</span>.</h2><br> 2. Open Safari web inspector - Timeline panel. Start record. Watch "Memory" timeline.<br> 3. Click "Add Data" button. Check whether memory timeline appears a peak <span class="strong">over 1G MB</span>. <br> </div> <button id="addData">Add Data</button> <br> <br> <div id="main0" style="width: 700px; height: 270px;"></div> <script type="text/javascript"> var FIXED_IDX = -1; var xAxisDataRaw = ['05:15:43', '05:15:46', '05:15:48']; var seriesDataRaw0 = [3547546, 3903750, 1628242]; var seriesDataRaw1 = [-167033, -2092606, -1622461]; var xAxisData = ['05:15:41']; var seriesData0 = [0]; var seriesData1 = [0]; init(echarts); function init(echarts) { var option = { legend: {}, xAxis: [{ data: xAxisData }], yAxis: {}, series: [{ name: 'A', type: 'line', areaStyle: { color: { type: 'linear', x: 0, y: 0, x2: 0, y2: 1, colorStops: [{offset: 0, color: 'green'}, {offset: 1, color: 'yellow'}], global: false }, shadowColor: 'green', shadowBlur: 10 }, data: seriesData0 }, { name: 'B', type: 'line', areaStyle: { color: { type: 'linear', x: 0, y: 0, x2: 0, y2: 1, colorStops: [{offset: 0, color: 'green'}, {offset: 1, color: 'yellow'}], global: false }, shadowColor: 'green', shadowBlur: 10 }, data: seriesData1 }] }; function addData() { FIXED_IDX++; if (FIXED_IDX >= xAxisDataRaw.length) { return; } xAxisData.push(xAxisDataRaw[FIXED_IDX]); seriesData0.push(seriesDataRaw0[FIXED_IDX]); seriesData1.push(seriesDataRaw1[FIXED_IDX]); chart.setOption({ xAxis: { data: xAxisData }, series: [{ data: seriesData0 }, { data: seriesData1 }] }); } var chart = echarts.init(document.getElementById('main0')); chart.setOption(option); document.getElementById('addData').onclick = function () { addData(); }; } </script> </body> </html> ``` And the record of the memory timeline:  Notice picture above that the memory is over 1GB and the single JS task takes over 2 second.
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