Does this crate support profiling with criterion?

[dclong]

Criterion supports profiling as well. Can this crate be used for profiling with criterion?

[jbreitbart]

I am not sure what you mean with profiling. This crate allows you to use perf counters as input for criterion.rs and criterion uses them the same way as it uses its default inputs.

[dclong]

Criterion is mainly for benchmark (measuring how fast a block of code runs). However, it support profiling a block of code too, which measures how much relative time each part of the code block takes. This is often very helpful for identify the bottleneck of a code block. There is a Rust crate pprof for profiling which supports integration with Criterion.

criterion-perf-events is great plugin for Criterion and I have been using criterion + criterion-perf-events to generate stable benchmark results. However, I'd like to know whether it's possible to leverage criterion-perf-events (or the underlying crate perfcnt) for profiling as well.

[iamkroot]

I guess the feature request is to support Criterion::Profiler trait, something like PProfProfiler.

In my case, I would like to use perf to generate a flamegraph, similar to how the pprof crate is doing it.