How to profile php on 1s-Bitrix using XHProf?

Question

PHP

Hello.

In order to identify and eliminate "poor-quality" code, I decided to install XHProf.
I collected data, but I do not know how to work with them. All slow functions are connection of components, such as CAllMain::IncludeComponent, CBitrixComponent::includeComponent and so on. Failed into nested functions there are the same component calls everywhere.

I expected to find the shit code written by the programmers of this project, and not delve into the Bitrix core.

Maybe I chose XHProf in vain?
Is it possible to look for bottlenecks on Bitrex better than other methods?

Answer 1

The profiler is already a scalpel, to find a specific problematic piece of code, set it on the whole hit - a dubious solution that will result in the problems you have encountered.
Localize the problem and collect data by the profiler already inside the component. But from experience, it really needs a percentage in 10 cases.
Start with the built-in debugger.

Look at the number of requests with and without cache, the execution time. In the same place you will see which components allow themselves a lot, and there, if necessary, run the profiler. Although most likely, you will see the problem before it starts.