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Binary Size

The binary size comparisons were run on an Intel(R) Core(TM) i7-6560U CPU @ 2.20GHz processor, on Linux 5.12.5/Fedora 34, and run against commit 8406144. The Rust compiler version was rustc 1.55.0-nightly (b41936b92 2021-07-20).

Each binary is generated using all optimization levels, and includes the result before and after stripping, with the core functionality black-boxed, to ensure optimization does not optimize-out the result.

All these binaries sizes are relative to the size of an empty Rust binary: that is, the size of the empty executable is subtracted from the total binary's size. For some cases, this leads to results of 0 bytes, which isn't real, but in practice leads to no additional size in the resulting executable.

Default

Optimization Level "0"

Parse Unstripped - Optimization Level "0" Write Unstripped - Optimization Level "0" Parse Stripped - Optimization Level "0" Write Stripped - Optimization Level "0"

Optimization Level "1"

Parse Unstripped - Optimization Level "1" Write Unstripped - Optimization Level "1" Parse Stripped - Optimization Level "1" Write Stripped - Optimization Level "1"

Optimization Level "2"

Parse Unstripped - Optimization Level "2" Write Unstripped - Optimization Level "2" Parse Stripped - Optimization Level "2" Write Stripped - Optimization Level "2"

Optimization Level "3"

Parse Unstripped - Optimization Level "3" Write Unstripped - Optimization Level "3" Parse Stripped - Optimization Level "3" Write Stripped - Optimization Level "3"

Optimization Level "s"

Parse Unstripped - Optimization Level "s" Write Unstripped - Optimization Level "s" Parse Stripped - Optimization Level "s" Write Stripped - Optimization Level "s"

Optimization Level "z"

Parse Unstripped - Optimization Level "z" Write Unstripped - Optimization Level "z" Parse Stripped - Optimization Level "z" Write Stripped - Optimization Level "z"

Compact

Optimization Level "0"

Parse Unstripped - Optimization Level "0" Write Unstripped - Optimization Level "0" Parse Stripped - Optimization Level "0" Write Stripped - Optimization Level "0"

Optimization Level "1"

Parse Unstripped - Optimization Level "1" Write Unstripped - Optimization Level "1" Parse Stripped - Optimization Level "1" Write Stripped - Optimization Level "1"

Optimization Level "2"

Parse Unstripped - Optimization Level "2" Write Unstripped - Optimization Level "2" Parse Stripped - Optimization Level "2" Write Stripped - Optimization Level "2"

Optimization Level "3"

Parse Unstripped - Optimization Level "3" Write Unstripped - Optimization Level "3" Parse Stripped - Optimization Level "3" Write Stripped - Optimization Level "3"

Optimization Level "s"

Parse Unstripped - Optimization Level "s" Write Unstripped - Optimization Level "s" Parse Stripped - Optimization Level "s" Write Stripped - Optimization Level "s"

Optimization Level "z"

Parse Unstripped - Optimization Level "z" Write Unstripped - Optimization Level "z" Parse Stripped - Optimization Level "z" Write Stripped - Optimization Level "z"