fingine VS iai

I've been writing a library to help me forecast my personal finances accounting for taxes, various expenditures, income, and unexpected windfalls. I started because I noticed that whenever I tried to forecast my future, I kept repeating a lot of code and thought it would be better to just build out a library I could re-use. Plus, it's been a cool opportunity to learn Rust :)

Library if anyone's interested: https://github.com/RestitutorOrbis/finsim

There's still a lot of work to be done so I wouldn't use it just yet but it's here: https://github.com/RestitutorOrbis/finsim

The three popular options for benchmarking in Rust are: libtest bench, Criterion, and Iai.

Iai^1 uses CacheGrind^2 to count instructions

[1] - https://github.com/bheisler/iai

But, /u/bencherdev, please consider integrating iai measurements! By the same person behind criterion but designed for one-shot measurements that are stable in CI measurements.

Is lai no longer maintained? It hasn't had any commits in a year and a half.

Lately I've found that using unwrap_unchecked has nearly zero performance gain but all the UB to gain if you change the code one day. My source is iai which provides exact instruction counts and is entirely deterministic for any given execution (and almost-deterministic across different compilations of the same program).

Have you tried criterion.rs or iai ? The first is great at micro benchmarks and, if it is not enough, the second can catch even smaller performance difference.

In the mean time maybe https://github.com/bheisler/iai could be of help

Well, the most interesting one is probably Iai; an experimental benchmark framework that runs all of the benchmarks in Cachegrind for much higher precision and repeatability than is possible with Criterion.rs. It's still a work-in-progress, so I haven't published it on Crates.io yet. See the readme for a more detailed discussion of the pros/cons relative to Criterion.rs.