We are experiencing an issue in IE 10 that we do not experience in Chrome or FF.
We are trying to use virtualization with a page size of at least 100 (preferably 150), but there is a significant delay between when the user clicks on a row and when the row is actually highlighted. This presents a problem because we would like to open a kendoWindow when the user double-clicks on a grid row.
If we reduce the page size to around 30 or reduce the number of visible columns to 10, the delay between clicking on a row and the row responding to being clicked is reduced, but this is not optimal. How can we work around this?
The markup for the page is attached.
We are trying to use virtualization with a page size of at least 100 (preferably 150), but there is a significant delay between when the user clicks on a row and when the row is actually highlighted. This presents a problem because we would like to open a kendoWindow when the user double-clicks on a grid row.
If we reduce the page size to around 30 or reduce the number of visible columns to 10, the delay between clicking on a row and the row responding to being clicked is reduced, but this is not optimal. How can we work around this?
The markup for the page is attached.
9 Answers, 1 is accepted
0
Hello Billy,
I am afraid that I am not able to reproduce such performance issue with when virtual scrolling + selection is enabled. Check what I tried on my side with page size of 150:
http://screencast.com/t/gNxUN6RZQW
What version do you use? Could you try to update to the latest internal build and see if the problem persists? If it does we will need a sample project to investigate further.
Kind Regards,
Petur Subev
Telerik
I am afraid that I am not able to reproduce such performance issue with when virtual scrolling + selection is enabled. Check what I tried on my side with page size of 150:
http://screencast.com/t/gNxUN6RZQW
What version do you use? Could you try to update to the latest internal build and see if the problem persists? If it does we will need a sample project to investigate further.
Kind Regards,
Petur Subev
Telerik
Join us on our journey to create the world's most complete HTML 5 UI Framework - download Kendo UI now!
0

Billy
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answered on 28 May 2013, 09:43 PM
We are using version 2013.1.514. Not certain if it makes a difference, but we are using the Metro theme.
This is how it behaves for me in IE 10 with a page size of 150:
http://screencast.com/t/NTvsI2BaAl
I will package up the test project from the video and provide it in the next post.
This is how it behaves for me in IE 10 with a page size of 150:
http://screencast.com/t/NTvsI2BaAl
I will package up the test project from the video and provide it in the next post.
0

Billy
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answered on 28 May 2013, 09:57 PM
You can download the zipped sample project from here:
https://skydrive.live.com/redir?resid=639277A923C5AD66!107&authkey=!AJx7P67tFC72dEs
https://skydrive.live.com/redir?resid=639277A923C5AD66!107&authkey=!AJx7P67tFC72dEs
0
Hello Billy,
Unfortunately on my side the performance of the selection is quite different. Here is how it goes:
http://screencast.com/t/QwgiwEUJ
On what machines did you try the selection , did you try if it is the same experience on different machines?
Kind Regards,
Petur Subev
Telerik
Unfortunately on my side the performance of the selection is quite different. Here is how it goes:
http://screencast.com/t/QwgiwEUJ
On what machines did you try the selection , did you try if it is the same experience on different machines?
Kind Regards,
Petur Subev
Telerik
Join us on our journey to create the world's most complete HTML 5 UI Framework - download Kendo UI now!
0

Billy
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answered on 30 May 2013, 03:55 PM
Win7 SP1 64 bit, 16 GB RAM, 3.5 GHz quad core, has latest updates
Win7 SP1 64 bit, 6 GB RAM, 2.2 GHz dual CPU, virtual machine, does not have latest updates
Win8 64 bit, 8 GB RAM, 1.73 GHz quad core, has latest updates
Row selection is a little faster on the Win8 machine, but there is still a noticeable lag. I will try on a few more machines.
Win7 SP1 64 bit, 6 GB RAM, 2.2 GHz dual CPU, virtual machine, does not have latest updates
Win8 64 bit, 8 GB RAM, 1.73 GHz quad core, has latest updates
Row selection is a little faster on the Win8 machine, but there is still a noticeable lag. I will try on a few more machines.
0

Billy
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answered on 30 May 2013, 03:58 PM
I had to attach the list of tested machines to this post due to receiving the "Invalid post content" error.
Row selection is a little faster on the Win8 machine, but there is still a noticeable lag. I will try on a few more machines.
Row selection is a little faster on the Win8 machine, but there is still a noticeable lag. I will try on a few more machines.
0
Hello Billy,
Thank you for providing details about the machines that you tried.
Regards,
Petur Subev
Telerik
Thank you for providing details about the machines that you tried.
I am afraid that at least for now we cannot suggest any alternative solutions. There is a regression in the performance for the complex selector matching in jQuery that occurs not only in IE but also in Chrome(2+ times slower for mousedown), but because of the better performance in Chrome the delay is not noticeable. We applied a workaround for the grouping and reordering selectors but for now we have not found a feasible solution for the selection. The issue is logged in our system and we will apply a fix for future versions if we find a solution. I am sorry for the inconvenience caused.
Regards,
Petur Subev
Telerik
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0

Ryan
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answered on 19 Nov 2013, 09:18 PM
Hi Petur,
Is there any update on this? I'm still seeing a big delay in IE11 when there are 500 rows in the grid. We're still on kendo .2013.1.319, but if you told me this was fixed in a later version, we'd upgrade sooner.
Thanks
Is there any update on this? I'm still seeing a big delay in IE11 when there are 500 rows in the grid. We're still on kendo .2013.1.319, but if you told me this was fixed in a later version, we'd upgrade sooner.
Thanks
0
Accepted
Hello again Billy,
The following improvement is introduced in the Q2 service pack.
http://www.kendoui.com/web/whats-new/release-notes/q2-2013-sp1-web.aspx
Kind Regards,
Petur Subev
Telerik
The following improvement is introduced in the Q2 service pack.
http://www.kendoui.com/web/whats-new/release-notes/q2-2013-sp1-web.aspx
What’s New
- Improvement: Optimized selection performance when there is no grouping or hierarchy
Kind Regards,
Petur Subev
Telerik
Join us on our journey to create the world's most complete HTML 5 UI Framework - download Kendo UI now!