Cairo profiler

[MaksymilianDemitraszek]

Hi everybody. I am doing some research on gas optimisation tool for Cairo contracts (Cairo profiler) we will build in the near future as a part of Protostar.

It would provide detailed analysis of each function cost and how many times each function is used in the executed test, similar to Foundry(https://book.getfoundry.sh/forge/gas-reports). It would also include profiling with fuzz tests to help find edge cases.

I’m wondering what features would you expect from such a tool? Do you maybe know any interesting tooling we could get inspired by?

[amanusk]

An awesome feature to have is something like the tenderly flame graph for gas usage.
Flame graphs are quite a known took, and exist in go rust etc.

Ideally this is something that can be created and viewed locally in the browser.

Here is an example from tenderly:

https://dashboard.tenderly.co/public/defisaver-v2/prod-simulations/fork-simulation/00892a16-a402-46a9-8f83-92a5750f455a/gas-usage

[MaksymilianDemitraszek]

We plan to implement first version of profiler as a --profile flag for test command.

We will use pprof as our interface because it supports lots of formats by default (graph, flame graph).

[MaksymilianDemitraszek]

Updating about the progress, we are currently successfully managed to profile memholes. Currently I am working on the support for including called contracts into profile.

[MaksymilianDemitraszek]

https://github.com/software-mansion/protostar/milestone/22