How to know the cause of slow pages?

Question

I know it's kinda vague, but I have a website and all works fine, unless the page "See All" as well as the search and filters, are all very slow. If it's in cache it opens in a second but if it isn't it takes so much time.

it only happens to this page but it a catalog page anyway, I don't know where to check.

Thanks! Best regards, Rui Silva

Answer 1

Sometimes this is caused by having too many filterable/ searchable attributes, so it's worth a try to verify this.

But what I suggest on a more granular scale is to install blackfire.io tool and to profile the pages you mention. The profiling results will provide a detailed graph where you will be able to see which are the classes and methods used and where is the time spent inside them.

Good luck!