4.12.0 - 2026-03-19

v4.12.0 - 2026-03-19

In this release, we've focused on improving the local user experience.
We've revamped the output of the cli to provide tailed logs while the benchmarks are being executed, and polished a bit the display of results after your run.

We also added support to run multiple modes in a single command invocation, both for local and CI runs!
For instance, that means you can now do
codspeed run --mode simulation --mode memory --mode walltime -- cargo codspeed run

Last but not least, you can now define entrypoints in your project config

# codspeed.yml
# List of commands that are run when running `codspeed run` without further arguments
benchmarks:
  - name: My ls command
    # Mutually exclusive with entrypoint
    # Expects a command that will run a benchmark for an arbitrary command
    exec: ls -al /usr/bin
   
  - name: My pytest-codspeed benchmark
    # Mutually exclusive with exec
    # Expects a command that will run a benchmark program that is using a codspeed integration
    entrypoint: pytest --codspeed src

Details

🚀 Features

• Set NODE_OPTIONS to get perf map from node by @GuillaumeLagrange in #267
• Disable node instrospection for exec-harness by @GuillaumeLagrange
• Support CODSPEED_MEMTRACK_BINARIES for static allocator discovery by @not-matthias
• Gracefully handle logs from the runner while rolling buffer is active by @GuillaumeLagrange
• Add --show-full-output to bypass the new rolling buffer by @GuillaumeLagrange
• Add a spinner while waiting for results by @GuillaumeLagrange
• Clean up group headers and emoji usage, make the executor title not dim after run by @GuillaumeLagrange
• Add rolling buffer to display logs from executors by @GuillaumeLagrange
• Polish impact reporting and upload feedback by @art049
• Add color-coded metrics to benchmark result tables by @art049
• Enhance local logger with richer visual hierarchy by @art049
• Style the ASCII banner with CodSpeed orange by @GuillaumeLagrange
• Enforce CodSpeed CLI as single source of truth for all measurements by @art049
• Add optimize and setup-harness skills by @art049
• Add the cursor plugin by @art049
• Check if user is logged in before doing a local run by @GuillaumeLagrange in #263
• Skip respository resolve with --skip-upload by @GuillaumeLagrange
• Use an enum and fix schema for entry/entrypoint by @GuillaumeLagrange in #260
• Accept a mix of entrypoint and exec targets in project config by @GuillaumeLagrange
• Introduce OrchestratorConfig and ExecutorConfig by @GuillaumeLagrange
• Unify run_part_id suffix computation between ci providers and local by @GuillaumeLagrange
• Add the claude plugin by @art049
• Add local_data to upload metadata by @GuillaumeLagrange
• Use repositoryOverview resolver rather than repository by @GuillaumeLagrange

🐛 Bug Fixes

• Use fp unwinding mode when running go test by @GuillaumeLagrange in #269
• Improve error message when no benchmarks are found by @GuillaumeLagrange in #264

🏗️ Refactor

• Extract shared test helpers for compile and track by @not-matthias
• Pass extra env via config instead of unsafe set_var by @not-matthias
• Remove the closure argument to poll in favor of polling options by @GuillaumeLagrange
• Move EXEC_HARNESS_VERSION and EXEC_HARNESS_COMMAND to orchestrator mod by @GuillaumeLagrange
• Flatten orchestrator execution loop over (command, mode) pairs by @GuillaumeLagrange
• Introduce Orchestrator to support multi-mode execution by @GuillaumeLagrange in #259
• Consolidate poll_results into upload module by @GuillaumeLagrange

🧪 Testing

• Add spawn wrapper integration test for static allocator discovery by @not-matthias in #266

⚙️ Internals

• Bump linux-perf-data to use upstream version by @GuillaumeLagrange in #271
• Remove lazy_static in favor of LazyLock by @GuillaumeLagrange in #265
• Rename skill directories with codspeed prefix by @art049
• Move architecture docs out of this repo by @GuillaumeLagrange in #262
• Typo in plugin description by @art049

Install codspeed-runner 4.12.0

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://github.com/CodSpeedHQ/codspeed/releases/download/v4.12.0/codspeed-runner-installer.sh | sh

Download codspeed-runner 4.12.0

File	Platform	Checksum
codspeed-runner-aarch64-unknown-linux-musl.tar.gz	ARM64 MUSL Linux	checksum
codspeed-runner-x86_64-unknown-linux-musl.tar.gz	x64 MUSL Linux	checksum