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Major performance decrease in 2015 Q1

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Andreas
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Andreas asked on 09 Jun 2015, 12:43 PM

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>
 
<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

 

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Danail Vasilev
Telerik team
answered on 10 Jun 2015, 02:57 PM
Hi Andreas,

The mentioned issue is actually related to the one that has already been logged here - http://feedback.telerik.com/Project/108/Feedback/Details/152404

If everything is fixed the issue may be fixed within one of our next releases.

Regards,
Danail Vasilev
Telerik
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Andreas
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answered on 11 Jun 2015, 05:19 AM

Hi,

Is there any workaround until then, because this really breaks our entire application on iPads and other slower clients?
Going back to 2014 version is not an option since we have other things that are dependent on the 2015 version...

Regards
Andreas

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Danail Vasilev
Telerik team
answered on 16 Jun 2015, 12:24 PM
Hello Andreas,

We have made a further investigation on the matter and this is actually a separate issue - the fix for the previous issue doesn't help. That being said I have reported this issue to our development team and logged a new public item here (http://feedback.telerik.com/Project/108/Feedback/Details/161466), so that you can monitor its status and put your comments below.

Unfortunately I cannot offer a reliable solution because the issue requires additional research, as it is more complex and providing a workaround would mean fixing the issue itself.

I have also updated your Telerik points for reporting this issue to us.

Regards,
Danail Vasilev
Telerik
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Andreas
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answered on 18 Jun 2015, 09:53 AM
Any workaround?
0
Danail Vasilev
Telerik team
answered on 22 Jun 2015, 02:22 PM
Hi Andreas,

I am sorry to say that currently I cannot offer a possible workaround due to the complexity of the issue. You can, however, track the status of the item for any updates on the matter.

Regards,
Danail Vasilev
Telerik
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