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Very sluggish response when logged in
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July 15, 2014
9:56 am
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chrisjmears

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Forum Posts: 54
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April 26, 2013
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Hi, my channel 5384 is extremely slow to response when I am logged in. Even when Im on another tab, for example editing the setting or particularly if I am trying to make changes to the graph settings or even scroll.

Is there a reason for this.

Other public channels seem fine?

July 15, 2014
11:14 am
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lee

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Forum Posts: 457
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March 14, 2011
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Hi,

You may have too many data points on all of your charts, which can cause your browser to run slowly as lots of RAM and CPU are required for all of that data. You can try changing your chart settings to use an average function to reduce the number of data points that are displayed.

lee

July 16, 2014
7:16 am
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chrisjmears

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Forum Posts: 54
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April 26, 2013
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Hi Lee,

I have 4 charts on the page. each is pulling 7200 data points. 28,800 doesnt seem like a lot for a modern machine to handle

July 16, 2014
11:14 am
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lee

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Forum Posts: 457
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March 14, 2011
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Hi,

We use HighCharts to draw the charts, and you can test out your browser's ability to load data points by changing some values here: http://www.highcharts.com/studies/performance.php?seriesType=line&markers=on&chartCount=16&seriesPerChart=2&pointsPerSeries=2000&chartWidth=250&libSource=http%3A%2F%2Fcode.highcharts.com%2Fhighcharts.js . My browser takes 8 seconds to load this data, and the page is very sluggish. The points on this test page are generated randomly and there is no backend server sending the data, so performance is completely dependent on your browser and computer specs. I agree that 28,800 data points don't seem like that many, but when each point is rendered via JavaScript and SVG it does unfortunately cause performance to suffer.

lee

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