helgasoft commented on issue #18562:
URL: https://github.com/apache/echarts/issues/18562#issuecomment-1520651321
> line chart must update all 10,000 points every second
Your code is actually **adding** points instead of updating (replacing)
them, so memory runs out. Try this :
```
setInterval(function () {
newdata = generateData(dataCount);
opt = myChart.getOption();
opt.xAxis= {data: newdata.categoryData };
opt.series[0].data= newdata.valueData;
myChart.setOption(opt, true); // replace
}, 1000);
```
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