Add performance counters to ConsoleSubsriber

[patrickkusebauch]

It is nice that we inform users running in verbose mode as we are progressing, but we do not provide any numbers regarding how much time each part (Ast building, dependency resolution) takes.

Can we add some timers to ConsoleSubsriber that would give the user timing info about how long did it take between each step?

[rubenrubiob]

I could take this issue next week. As far as I checked, it seems to be enough to add a counter to ConsoleSubscriber. Since it is already installed as a dependency, it would be possible to use Symfony Stopwatch component to keep the track of the time. I would make it an explicit dependency.

I do not know if it would be useful to add a writeLineFormattedWithTime(string|array $message, int $durationInMiliseconds) to OutputInterface, to concatenate the time there, also converting it to seconds.

Is there anything else I should take into account?

[patrickkusebauch]

Looking at the implementation, please don't. It is not precise enough. use https://www.php.net/manual/en/function.hrtime.php.

[rubenrubiob]

Okay, I will use hrtime. Should I create something like a Stopwatch service? O should I keep it simple and keep track of the time in the OutputFormatter.

I do not want to overengineer it, but I also do not want to create hard to maintain code. So tell me what you prefer :)

[patrickkusebauch]

I did this: d73d89a But feel free to do something more elaborate.