5.5.0 - 2026-10-14

This release adds support for Ubuntu 26.04, on both x86_64 and arm64. The officially supported distributions are now Ubuntu 22.04, 24.04 and 26.04, and Debian 12.

Profile uploads are also faster on GitHub-hosted runners, and archives larger than 5 GiB can now be uploaded.

Results from the Memory instrument are processed much faster and with less memory on large benchmarks.

This release also fixes a crash that could affect some pytest-codspeed benchmarks since v5.4.2.

Release Notes

🚀 Features

• Split profile archive uploads into concurrent parts (#565) by @lvaroqui in #565

🐛 Bug Fixes

• Only set PYTHONPERFSUPPORT for exec-harness benchmarks (#584) by @not-matthias in #584

🏗️ Refactor

• Move the module event filter next to the decoder by @not-matthias

⚡ Performance

• Use mimalloc as the runner's global allocator by @not-matthias
• Stream each memtrack frame when finding module events by @not-matthias in #578
• Decode memtrack frames for module events in parallel by @not-matthias

🧪 Testing

• Run the memtrack benches on mimalloc by @not-matthias in #581
• Search artifacts of up to 100M events in the module event bench by @not-matthias
• Keep instrumented module event benches to 1M events by @not-matthias in #576
• Benchmark finding module events in a memtrack artifact by @not-matthias

⚙️ Internals

• Support Ubuntu 26.04 (#574) by @lvaroqui in #574
• Publish executable hashes and refresh the eBPF allowlist on release (#585) by @GuillaumeLagrange in #585
• Migrate to github default arm runners (#583) by @lvaroqui in #583

Install codspeed-runner 5.5.0

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://github.com/CodSpeedHQ/codspeed/releases/download/v5.5.0/codspeed-runner-installer.sh | sh

Download codspeed-runner 5.5.0

File	Platform	Checksum
codspeed-runner-aarch64-apple-darwin.tar.gz	Apple Silicon macOS	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