Find out what takes most of the space in your executable.
Inspired by google/bloaty.
Note: supports ELF (Linux, BSD) and Mach-O (macOS) platforms only.
bash
cargo install cargo-bloat
Get a list of biggest functions in the release build:
``` % cargo bloat --release -n 10 Finished release [optimized] target(s) in 0.2 secs
File .text Size Crate Name
36.5% 93.9% 5.0MiB [13502 Others]
0.4% 1.0% 55.6KiB regex
Get a list of biggest dependencies in the release build: ``` % cargo bloat --release --crates -n 10 Finished release [optimized] target(s) in 0.2 secs
File .text Size Name 11.0% 28.4% 1.5MiB cargo 7.6% 19.5% 1.0MiB std 3.0% 7.7% 420.2KiB regexsyntax 2.8% 7.1% 385.0KiB toml 2.5% 6.5% 351.0KiB regex 2.2% 5.6% 301.5KiB [Unknown] 2.0% 5.2% 281.3KiB libgit2sys 1.1% 2.9% 157.4KiB goblin 0.8% 2.1% 112.6KiB serde_json 0.8% 2.1% 111.7KiB docopt 38.8% 100.0% 5.3MiB .text section size, the file size is 13.6MiB
Note: numbers above are a result of guesswork. They are not 100% correct and never will be. ```
Flags specific for cargo-bloat:
--crates Per crate bloatedness
--filter CRATE Filter functions by crate
--split-std Split the 'std' crate to original crates like core, alloc, etc.
--full-fn Print full function name with hash values
-n NUM Number of lines to show, 0 to show all [default: 20]
-w, --wide Do not trim long function names
The results are not perfect since function names parsing is not perfect.
Also, all non-Rust methods are skipped during crates resolving which moves jemalloc
and any other C libraries to the [Unknown] section.
cargo-bloat is licensed under the MIT.