(AEM 5.6.0) Teaser Performance Problems on webpage scroll

Forum|Forum|10 years ago
October 16, 2015
5 replies
1902 views

I've been building a CQ page with a few teasers on it and I noticed that there seems to be a dramatic and noticeable slowdown whenever I scroll the page. I then tried it out on Geometrixx and I'm seeing the same thing. Chrome's javascript profiler revealed that scrolling around the page used up to 17% of my CPU is being used to process "CQ_Analytics.SegmentMgr.resolve", which appears to be triggering whenever a teaser is scrolled into view.

This is really heinous, and it is happening on the Geometrixx site so I don't believe it's something I've done. Has anybody figured out how to fix this or optimize around it?

I've restarted Chrome since I suspected there might be a leak that was consuming resources. It did not seem to matter, and on Firefox the problems are even more severe, essentially hanging the webpage for a few seconds as you scroll. Again, it comes to the same calls to CQ_Analytics.SegmentMgr.resolve().

I'm seeing all this in preview mode on AEM 5.6.0.

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Best answer by joel_triemstra

It looks like we just unbound all "mousemove" events from the $CQ copy of jQuery.

J

joel_triemstra

Level 2

This sounds like something we saw in v5.4. There's JS in the segmentation framework that tracks your mouse position for segmentation purposes. I can't remember for sure, but I think we ended up using our own JS to remove the event listener for mouse move that CQ had created.