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flamegraph-0.6.5
cargo-flamegraph
A simple cargo plugin that generates a flamegraph for a workload.
Currently only linux is supported via perf, but this is going to change as inferno gains support for others.
Installation
cargo install flamegraph
This will make the cargo-flamegraph
binary
available in your cargo binary directory.
On linux systems this is usually something
like ~/.cargo/bin
.
Usage
# defaults to profiling cargo run, which will
# also profile the cargo compilation process
# unless you've previously issued `cargo build`
cargo flamegraph
# if you'd like to profile your release build:
cargo flamegraph --release
# if you'd like to profile a specific binary:
cargo flamegraph --bin=stress2
# if you'd like to profile an arbitrary executable:
cargo flamegraph --exec="sleep 10"
Enabling perf for use by unpriviledged users
To enable perf without running as root, you may
lower the perf_event_paranoid
value in proc
to an appropriate level for your environment.
The most permissive value is -1
but may not
be acceptable for your security needs etc...
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