Performances for chart with about 1500 values

[dclairac]

On chart with about 1500 values, it take about 3 secondes to generate and draw data.
Example: http://jsfiddle.net/8qgn4/2/

It seems to take little more time for loading with csv but it's hard to verify
(use of url: 'path_of_csv' seems slower than row: 'datas' even if csv take 40ms to be downloaded).

Is there any way to reduce this time ?

[masayuki0812]

Hi @dclairac ,
As said in #172, it might be difficult to improve dramatically. However, I'll try optimizing later. Reducing the number of elements might works well.

[dclairac]

Thanks, I haven't see #172.
For now, I have change my server code to compute average for 1s, 10s or 60s depend of number of point. Thats work great as I never have more than 300 point to display.

Problem is that there is less information on the chart.
Should it be possible, with sub chart to have all the points in csv but to display only some of them (or average). But when using zoom tool on subchart, have more points display on upper chart ?
With that, we can have fast display chart and on a selected period, we can have something more specific.