c-api: use --release when MinSizeRel and RelWithDebInfo is used
#8549
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alexcrichton
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May 4, 2024
dundargoc
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* fix(c-api): give a cleaner error message if cargo isn't found (#8497) Instead of > Performing build step for 'wasmtime-crate''WASMTIME_CARGO_BINARY-NOTFOUND' is not recognized as an internal or external command, operable program or batch file. this will now instead output > "cargo" was not found. Ensure "cargo" is in PATH. Aborting... * c-api: use `--release` when MinSizeRel and RelWithDebInfo is used (#8549) * build: add "fastest-runtime" profile for runtime optimization (#8554) This is extremely useful for cases where the default optimizations just are not enough. Background: [neovim](https://github.com/neovim/neovim) is interested to add wasmtime support in neovim/neovim#28415 but we noticed that including wasmtime, even when not using wasmtime directly, heavily affects runtime performance. This is not only reflected in the increased startuptime but affects the runtime performance overall. Here are the benchmarks for startuptimes for different configurations. Important to note is that all of runtime is affected, but the startuptime is a decent proxy to measure runtime performance: ``` No wasm Time (mean ± σ): 50.5 ms ± 1.5 ms [User: 32.8 ms, System: 12.3 ms] Range (min … max): 48.3 ms … 54.4 ms 56 runs Wasm, lto=thin Time (mean ± σ): 104.9 ms ± 3.5 ms [User: 86.5 ms, System: 12.7 ms] Range (min … max): 99.5 ms … 111.1 ms 26 runs Wasm, lto=true Time (mean ± σ): 83.8 ms ± 2.5 ms [User: 65.8 ms, System: 12.1 ms] Range (min … max): 80.5 ms … 93.3 ms 31 runs Wasm, lto=true, strip="none", incremental=false, codegen-units=1, panic="abort" Time (mean ± σ): 53.1 ms ± 1.0 ms [User: 35.5 ms, System: 12.5 ms] Range (min … max): 50.6 ms … 55.5 ms 54 runs ```
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