How can I profile this type of slowdown?

• flamegraph

  47 4,262 7.4 Rust

  Easy flamegraphs for Rust projects and everything else, without Perl or pipes <3 (by flamegraph-rs)

  

Thanks, I actually tried flamegraph-rs but it didn't help me very much because the functions were recursive so it's not immediately clear what's taking long on the graph.

• cheatsheets

  1 2 0.0 TypeScript

You can see my flamegraph here, it's not very clear that the clone is taking up a lot of time. Is there some tool that gives me a percentage of total time that is spent on one function? Then I could easily see that the clone is taking a long time

• WorkOS

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• cargo-asm

  13 1,104 0.0 Rust

  cargo subcommand showing the assembly or llvm-ir generated for Rust code

You're best bet at the moment is probably using cargo-asm to inspect the function assembly to see when it is performing the correct TCO.

• tracing

  52 4,939 7.8 Rust

  Application level tracing for Rust.

  

You can use https://crates.io/crates/tracing to trace calls to the recursive function, print out the arguments and see which values are making it slow

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