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#862 in Magic Beans

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Apache-2.0 and GPL-3.0-or-later…

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The FRAME Benchmarking CLI

This crate contains commands to benchmark various aspects of Substrate and the hardware.
The goal is to have a comprehensive suite of benchmarks that cover all aspects of Substrate and the hardware that its running on.
There exist fundamentally two ways to use this crate. A node-integrated CLI version, and a freestanding CLI. If you are only interested in pallet benchmarking, then skip ahead to the Freestanding CLI.

Node Integrated CLI

Mostly all Substrate nodes will expose some commands for benchmarking. You can refer to the staging-node-cli crate as an example on how to integrate those. Note that for solely benchmarking pallets, the freestanding CLI is more suitable.


Here we invoke the root command on the staging-node-cli. Most Substrate nodes should have a similar output, depending on their integration of these commands.

$ cargo run -p staging-node-cli --profile=production --features=runtime-benchmarks -- benchmark

Sub-commands concerned with benchmarking.

    substrate benchmark <SUBCOMMAND>

    -h, --help       Print help information
    -V, --version    Print version information

    block       Benchmark the execution time of historic blocks
    machine     Command to benchmark the hardware.
    overhead    Benchmark the execution overhead per-block and per-extrinsic
    pallet      Benchmark the extrinsic weight of FRAME Pallets
    storage     Benchmark the storage speed of a chain snapshot

All examples use the production profile for correctness which makes the compilation very slow; for testing you can use --release. For the final results the production profile and reference hardware should be used, otherwise the results are not comparable.

Freestanding CLI

The freestanding is a standalone CLI that does not rely on any node integration. It can be used to benchmark pallets of any FRAME runtime that does not utilize 3rd party host functions.
It currently only supports pallet benchmarking, since the other commands still rely on a node.


Installing from local source repository:

cargo install --locked --path substrate/utils/frame/omni-bencher --profile=production


The exposed pallet sub-command is identical as the node-integrated CLI. The only difference is that it needs to be prefixed with a v1 to ensure drop-in compatibility.

First we need to ensure that there is a runtime available. As example we will build the Westend runtime:

cargo build -p westend-runtime --profile production --features runtime-benchmarks

Now the benchmarking can be started with:

frame-omni-bencher v1 \
    benchmark pallet \
    --runtime target/release/wbuild/westend-runtime/westend-runtime.compact.compressed.wasm \
    --pallet "pallet_balances" --extrinsic ""

For the exact arguments of the pallet command, please refer to the pallet sub-module.


The sub-commands of both CLIs have the same semantics and are documented in their respective sub-modules:

  • block Compare the weight of a historic block to its actual resource usage
  • machine Gauges the speed of the hardware
  • overhead Creates weight files for the Block- and Extrinsic-base weights
  • pallet Creates weight files for a Pallet
  • storage Creates weight files for Read and Write storage operations

License: Apache-2.0


~2.5M SLoC