Hi,
We use the RadGauge a lot, but lately we had some real performance issues, mostly on tablets (iPad)!
When reverting back to a telerik version prior to 2015 Q1 (2014 something), all issues are gone...
In a simple example:
<%@ Page Language="vb" AutoEventWireup="false" CodeBehind="gauge.aspx.vb" Inherits="TestaTredjepartWeb.gauge" %>
<!DOCTYPE html>
<
html
xmlns
=
"http://www.w3.org/1999/xhtml"
>
<
head
runat
=
"server"
>
<
title
></
title
>
</
head
>
<
body
>
<
form
id
=
"form1"
runat
=
"server"
>
<
script
type
=
"text/javascript"
>
window.__dt = new Date();
setTimeout(function () { alert((new Date()) - window.__dt - 10); }, 10);
</
script
>
<
asp:ScriptManager
ID
=
"s"
runat
=
"server"
>
</
asp:ScriptManager
>
<
div
>
<
asp:Button
ID
=
"btn"
runat
=
"server"
/>
<
telerik:RadRadialGauge
ID
=
"rrg"
runat
=
"server"
Transitions
=
"false"
>
<
Pointer
Value
=
"44"
Color
=
"Red"
Cap-Color
=
"Yellow"
></
Pointer
>
<
Scale
>
<
Labels
Position
=
"Outside"
Color
=
"Gray"
Font
=
"normal 10px Segoe UI, Tahoma, Helvetica"
/>
<
Ranges
>
<
telerik:GaugeRange
From
=
"0"
To
=
"40"
Color
=
"Red"
/>
<
telerik:GaugeRange
From
=
"40"
To
=
"90"
Color
=
"Yellow"
/>
<
telerik:GaugeRange
From
=
"90"
To
=
"200"
Color
=
"Green"
/>
</
Ranges
>
</
Scale
>
</
telerik:RadRadialGauge
>
</
div
>
</
form
>
</
body
>
</
html
>
When running this sample on a desktop computer, the alert says about 30ms with 2014 version and 100ms with any 2015 version, on an iPad it says 150ms with 2014 version and 600ms with any 2015 version.
About 3-4 times slower!
On some pages we have multiple gauges, which makes it even worse...
The 2015 Q2 Beta is also slow...
Regards
Andreas