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Row selection slow in IE9, OK in Firefox 12

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Ian
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Ian asked on 11 Jun 2012, 11:10 AM
Hello all

We're using a fairly oldish release (2010.3.1317.40) on Windows 7 using IE9.  Currently this is needed due to the amount of testing already performed with this version, so the customer is reticent to update to the latest version if it's all avoidable.

We're having a problem with performance when selecting a row in a RadGrid with a 1000 rows

It takes 1.5 seconds on the first time a row is selected, and then 0.75 seconds on subsequent selections.  This is more than enough for a user to notice the lag.

In Firefox selecting a row takes up 0.15 seconds.

Note that in both cases a callback is being made back to the server.  I've profiled this and that's taking 0.12 seconds, so the Firefox response time seems more than adequate.

Any ideas what can be causing this problem, or is it a problem with IE?

Thanks in advance.

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Richard
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answered on 13 Jun 2012, 07:44 PM
Ian:

I'd suggest that you reference the RadGrid's Client/server grid performance optimizations documentation page for some insights on potential optimizations here. It looks like there are some IE specific issues, for example:

Unfortunately JavaScript and CSS implementations in IE are processed slower compared to Gecko-based browsers. There are lots of ActiveX/COM objects, garbage collector does not work at full extent in most of the scenarios, there are some CSS bugs, etc.


I hope this helps.
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