extjs - ExtJS 3.* chart uses too much memory

Question

I am using Ext JS line chart with over 5000+ data. It uses too much memory especially on IE. How can I fix this leak or why it causes?

Answer 1

Both displaying 5k+ data points and processing it on client side are bad design decisions and should be avoided. Nobody can possibly comprehend this much data in one chart; that should be 10-12 points max or it becomes meaningless white noise. Client side processing in JavaScript is expensive, especially in older IEs; not only that, but you're also wasting time and resources transferring the data that is not going to be used.

The best solution is to modify your server side method to filter or aggregate data and provide UI access to these features.

Answer 2

Actually I have same Question , I do agree its not worth loading that much data but there are cases where I need to show drilling data in my ExtJs window.

Whose image is displayed below :

Here the points may go upto 15k data. Actually user wants to see the variations here rather than actual data. But he may need mouse over / zoom .

I achieved this with HTML5 plugin and adding this as an iframe.

Any words to achieve in ExtJs or how to go for this.