问题
Is it possible to get more/deeper data about the Symfony speed/slowness than seen at the image below?
As you see it says that the "controller" process takes around 8s (in dev mode), but I would like to know more about it - what actually Symfony does in this 8 seconds. Obviously the form on the screen is a bit heavy and it takes almost 2s to render it, but that's still less than ~25% of time.
This case is among the better ones, it can go to 15-20s, but I've just caught this one on screen. I've tried milli-measuring the speed inside the controller action, but that takes just a small portion of this 8s.
I looked around but couldn't find any details on profiling it precisely. I presume it has to do with the DB objects hydrating, but can't confirm that from this screen. Thanks.
来源：https://stackoverflow.com/questions/41237605/symfony-3-profiling-performance