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add missing deltas

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Vinzenz Schroeter 2025-04-24 20:59:15 +02:00
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content/posts/tiny-binaries-rust.md
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@ -103,15 +103,15 @@ The resulting size was 1.1 MB, which should be easy enough to beat.
The first thing that came to mind was telling the compiler to optimize for size, like with `gcc -Os`. The Rust equivalent is `opt-level = "s"`, and for even more optimization, `z` also disables loop vectorization. The first thing that came to mind was telling the compiler to optimize for size, like with `gcc -Os`. The Rust equivalent is `opt-level = "s"`, and for even more optimization, `z` also disables loop vectorization.
| Option | size in isolation (change) | size cumulative (change) | | Option | size in isolation (change) | size cumulative (change) |
| - | - | - | |-----------------------------------|----------------------------|--------------------------|
| baseline | 1.137.384 | 1.137.384 | | baseline | 1.137.384 | 1.137.384 |
| opt-level = 'z' | 1.186.104 | 1.186.104 | | opt-level = 'z' | 1.186.104 (+48.720) | 1.186.104 (+48.720) |
| opt-level = 's' | 1.120.416 | 1.120.416 | | opt-level = 's' | 1.120.416 (-16.968) | 1.120.416 (-65.688) |
| lto = true | 914.496 | 808.528 | | lto = true | 914.496 (-222.888) | 808.528 (-311.888) |
| codegen-units = 1 | 982.904 | 775.888 | | codegen-units = 1 | 982.904 (-154.480) | 775.888 (-32.640) |
| panic = 'abort' | 979.840 |703.096| | panic = 'abort' | 979.840 (-157.544) | 703.096 (-72.792) |
| strip = true | 915.944 | 580.056 | | strip = true | 915.944 (-221.440) | 580.056 (-123.040) |
| switching back to opt-level = 'z' | | 555.480 | | switching back to opt-level = 'z' | | 555.480 (-24.576) |
So it turns out, if you want to halve your binary size, a few flags are enough in stable Rust. So it turns out, if you want to halve your binary size, a few flags are enough in stable Rust.
The most significant impacts came from link time optimization (LTO) and stripping of symbols from the binary. The most significant impacts came from link time optimization (LTO) and stripping of symbols from the binary.