Stackprof can be used alone/by itself to generate flamegraphs for arbitrary Ruby code. - Source: dev.to / almost 3 years ago

I’d use something like stackprof ( https://github.com/tmm1/stackprof ) to see where the time is going. If you already have suspicions you can use it to get information about a specific method / few lines of Ruby but there’s also a rack middleware. Source: about 3 years ago

Other profilers, such as stackprof, trace everything that’s happening by line. These types of profilers usually need some instrumentation to be configured, as shown below:. - Source: dev.to / over 3 years ago

We don't need to rely upon a priori reasoning only, we can use memory_profiles and benchmark_ips to compare the memory consumption and iterations per second of each solution. - Source: dev.to / over 4 years ago

If specific implementation performance is a genuine concern for you, then you can benchmark it yourself and see! I recommend using benchmark-ips. Source: over 4 years ago