✓ Uses Rust 2018 edition
|0.2.1||Apr 4, 2019|
|0.2.0||Mar 20, 2019|
|0.1.2||Mar 17, 2019|
|0.1.1||Mar 17, 2019|
|0.1.0||Mar 17, 2019|
#22 in Profiling
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Easily generate Instruments traces for your rust crate.
cargo-instruments is glue between cargo and Xcode's bundled profiling suite.
It allows you to easily profile any binary in your crate, generating files
that can be viewed in the Instruments app.
First, ensure that you are running macOS, with Cargo, Xcode, and the Xcode Command Line
Tools installed; then install with
cargo install cargo-instruments.
cargo-instruments requires a binary target to run. By default, it will try to
build the current crate's
main.rs. You can specify an alternative binary by
--example flags, or a benchmark target with the
Generate a new trace file (by default saved in
$ cargo instruments [-t template] [--bin foo | --example bar] [--out out_file]
Open the file in Instruments.app (or pass
--open to open automatically)
$ open target/instruments/my_bin_YYYY-MM-DD-THH:MM:SS.trace
Instruments has the concept of 'templates', which describe sets of dtrace probes
that can be enabled.
cargo-instruments will use the "Time Profiler", which collects CPU core and thread use.
# View all args and options $ cargo instruments --help
# profile the main binary with the Allocations template $ cargo instruments -t alloc
# profile examples/my_example.rs, with the default template, # for 10 seconds, and open the trace when finished $ cargo instruments --example my_example --limit 10000 --open
The best source of information about Instruments is likely the various WWDC sessions over the years: