Https://eclipse.dev/mat/ can handle very large graphs of objects using a similar approach. It also does implement some kind of paging, such that you do not have to load the complete graph into memory when running some of the graph algorithms. - Source: Hacker News / about 2 months ago

Stackprof can be used alone/by itself to generate flamegraphs for arbitrary Ruby code. - Source: dev.to / over 1 year 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: almost 2 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 2 years ago