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Chart with Huge Data Source --- slow response

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89834 Sep 8,2009 09:22 AM Sep 10,2009 07:13 AM ASP.NET Web Forms (Classic) 3
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Tags: Chart
Xu Shi
Asked On September 8, 2009 09:22 AM

I tested the Essential Studio ==> Windows Forms ==> Chart Samples ==> Data Binding ==> Chart with Huge DataSource.
The sample program is slow to respond.

With 100,000 data points, it takes 3~10 seconds to zoom in
or out. 50,000 date pionts are barely better. Is that the best it can do?

I am hoping to handle about this many data points without any noticable delays. Is it possible with Syncfusion?

Thanks!

Xu Shi

Venkata Vijayaraj B [Syncfusion]
Replied On September 9, 2009 07:27 AM

Hi Xu Shi,

Thanks for your interest in Syncfusion products.

I have attached the modified sample in the below link.

Sample Link:
http://files.syncfusion.com/support/Chart.Windows/v7.3.0.20/F89834/F89834Sample/main.htm

We have used grouping concept to handle large amount of data. Please refer 'ChartOversizedDataBindModel.cs' class file
in the sample and the below link for more details about the Grouping concepts. But, It is no need to analyze the
concepts to use this given Chart sample.
Grouping Reference Links:
http://help.syncfusion.com/ug_73/grouping/Sorting1.html
http://help.syncfusion.com/ug_73/grouping/default.html

Please let us know if you have any other queries.

Regards,
Venkat.

Xu Shi
Replied On September 9, 2009 08:34 AM

Venkat,

Thanks for your reply!

I tested the new sample. It's slightly better. But the zooming still takes 1~7 seconds, which is too slow for us. If I zoom in to a "flat" (height < width) rectangle, it takes 1~2 seconds. A "slim" (height > wideth) rectangle takes 6~7 seconds. To zoom out by hiting the Esc key, it also takes about 1 second.

Just curious. How fast does it run on your computer?
Using the same sample, do you need to wait for this long?
If it runs faster on your machine, that means perhaps some hardware setting (video card?) is causing the difference.

Please let me know. Thanks!

Xu Shi

Venkata Vijayaraj B [Syncfusion]
Replied On September 10, 2009 07:13 AM

Hi Xu Shi,

We are working to modify the sample to improve its speed and will provide you that in three business days.

Given Sample takes the mentioned time in our system also.

Thanks for your patience. Please let us know if you have any other concern.

Regards,
Venkat.

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