Add CodSpeed performance benchmarks

.github/workflows/codspeed.yml

@@ -0,0 +1,38 @@
+name: CodSpeed
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+  # `workflow_dispatch` allows CodSpeed to trigger backtest
+  # performance analysis in order to generate initial data.
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  id-token: write # for OpenID Connect authentication with CodSpeed
+
+jobs:
+  benchmarks:
+    name: Run benchmarks
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v5
+
+      - name: Setup rust toolchain, cache and cargo-codspeed binary
+        uses: moonrepo/setup-rust@v0
+        with:
+          channel: stable
+          cache-target: release
+          bins: cargo-codspeed
+
+      - name: Build the benchmark target(s)
+        run: cargo codspeed build -p tokscale-core
+
+      - name: Run the benchmarks
+        uses: CodSpeedHQ/action@v4
+        with:
+          mode: simulation
+          run: cargo codspeed run -p tokscale-core

Cargo.toml

@@ -95,3 +95,13 @@ lto = true
 opt-level = 3
 codegen-units = 1
 strip = true
+
+# Benchmark builds (used by cargo-codspeed) inherit from `release` by default,
+# which enables full LTO and a single codegen unit. That makes benchmark
+# compilation prohibitively slow without changing what CodSpeed measures, so we
+# keep optimizations on while disabling cross-crate LTO and allowing parallel
+# codegen units for the bench profile only. Release binaries are unaffected.
+[profile.bench]
+lto = false
+opt-level = 3
+codegen-units = 16

README.md

@@ -23,6 +23,7 @@
 [![npm Version](https://img.shields.io/npm/v/tokscale?color=0073FF&labelColor=black&style=flat-square&logo=npm)](https://www.npmjs.com/package/tokscale)
 [![npm Downloads](https://img.shields.io/npm/dt/tokscale?color=0073FF&labelColor=black&style=flat-square)](https://www.npmjs.com/package/tokscale)
 [![GitHub Contributors](https://img.shields.io/github/contributors/junhoyeo/tokscale?color=0073FF&labelColor=black&style=flat-square)](https://github.com/junhoyeo/tokscale/graphs/contributors)
+[![CodSpeed](https://img.shields.io/endpoint?url=https://codspeed.io/badge.json)](https://app.codspeed.io/makoMakoGo/tokscale?utm_source=badge)
 [![GitHub Forks](https://img.shields.io/github/forks/junhoyeo/tokscale?color=0073FF&labelColor=black&style=flat-square)](https://github.com/junhoyeo/tokscale/network/members)
 [![GitHub Stars](https://img.shields.io/github/stars/junhoyeo/tokscale?color=0073FF&labelColor=black&style=flat-square)](https://github.com/junhoyeo/tokscale/stargazers)
 [![GitHub Issues](https://img.shields.io/github/issues/junhoyeo/tokscale?color=0073FF&labelColor=black&style=flat-square)](https://github.com/junhoyeo/tokscale/issues)