• Bump pyperf to 2.10.0
• Add base64 module benchmark (b64, b32, b16, a85, b85)
• Add FastAPI HTTP benchmark
• Add YAML parsing benchmark
• Respect rigorous setting in benchmark configuration files

• Re-enable xdsl benchmark
• Remove code for Python 3.7 and previous versions
• CI updates: * fix workflow ubuntu-latest * remove unused Azure Pipelines config * update checkout version * setup dependabot * update setup-python version

• Add xdsl benchmark (but disabled by default due to a regression)
• Add a new quadtree nbody simulation using the Barnes Hut algorithm
• Add argparse benchmark
• Add NetworkX benchmarks
• Add Sphinx benchmark
• Add decimal module benchmark
• Add BPE tokeniser benchmark
• Skip dask benchmark on Windows for Python 3.13
• Bump dask[distributed] to 2024.10.1 for Windows compatibility
• Bump greenlet to 3.2.4 for compatibility with 3.13+
• Bump Chameleon to 4.6.0
• Bump tornado to 6.5.0
• Bump pyperf to 2.9.0
• Bump sqlglot to V2
• Bump mypy to 1.18.2
• Fix check for editable mode
• Fix --same-loops handling
• Fix: pass --warmup and --timeout flags to pyperf
• Add -V/--version CLI argument
• Add --hook CLI argument
• Run ruff format and check under pre-commit and GitHub Actions
• Add support for experimental JIT builds
• Add Arm64 CI
• Add Free-threading CI
• Make Windows a non-experimental platform in CI
• Add support Python 3.14 and drop Python 3.7, 3.8, 3.9

• Add a --same-loops option to the run command to use the exact same number of loops as a previous run (without recalibrating).
• Bump pyperf to 2.6.3
• Fix the django_template benchmark for compatibilty with 3.13
• Fix benchmark.conf.sample

• Add benchmark for asyncio_webockets
• Expose --min-time from pyperf to pyperformance CLI
• Bump coverage to 7.3.2 for compatibilty with 3.13
• Bump greenlet to 3.0.0rc3 for compatibilty with 3.13

• Vendor lib2to3 for Python 3.13+
• Add TaskGroups variants to async_tree benchmarks

• Move the main requirements.txt file to pyperformance/requirements so that dependabot can only run on that one file
• Update dependencies of benchmarks not to specify setuptools
• On older versions of Python, skip benchmarks that use features introduced in newer Python versions
• Support --inherit-environ when reusing a venv
• Use tomllib/tomli over toml
• Update MANIFEST.in to include cert files for asyncio_tcp_ssl benchmark
• Fix undefined variable issue when raising VenvPipInstallFailedError
• Add mypy config; run mypy in CI
• Fix typo of str.partition from _pyproject_toml.py
• Add version of Richards benchmark that uses super()
• Add a benchmark for runtime-checkable protocols
• Extend async tree benchmarks to cover eager task execution

• Upgrade pyperf from 2.5.0 to 2.6.0
• Clean unused imports and other small code details
• Migrage to the pyproject.toml based project
• Fix the django_template benchmark due to lack of distutils
• Add benchmark for toml
• Add benchmark for comprehensions
• Add benchmark for asyncio_tcp_ssl
• Add benchmark for asyncio_tcp
• Add benchmark for Dask scheduler
• Add the gc benchmarks to the MANIFEST file

• Upgrade pyperf from 2.4.1 to 2.5.0
• Add a benchmark to measure gc traversal
• Add jobs field in compile section to specify make -j param
• Add benchmark for Docutils
• Add async_generators benchmark
• Add benchmark for IPC
• Fix Manifest Group
• Fix installing dev build of pyperformance inside compile/compile_all
• Always upload, even when some benchmarks fail
• Add sqlglot benchmarks
• Support reporting geometric mean by tags
• Allow for specifying local wheels and sdists as dependencies
• Add a benchmark based on python -m pprint
• Add mdp back into the default group
• Add coroutines benchmark
• Reduce noise in generators benchmark
• Add benchmark for deepcopy
• Add coverage benchmark
• Add generators benchmark
• Add benchmark for async tree workloads
• Support relative paths to manifest files
• Add support for multiple benchmark groups in a manifest
• Fix --inherit-environ issue
• Use working Genshi 0.7.7

• Re-release support for user-defined benchmark after fixing problem with virtual environments.

• Support user-defined benchmark suites.

• Disable the henshi benchmark temporarily since is no longer compatible with Python 3.11.
• Reenable html5lib benchmark: html5lib 1.1 has been released.
• Update requirements.
• Replace Travis CI with GitHub Actions.
• The development branch master was renamed to main. See https://sfconservancy.org/news/2020/jun/23/gitbranchname/ for the rationale.

• Drop usage of the six module since Python 2 is no longer supported. Remove Python 2 specific code.
• Update dependencies:
  • django: 3.0 => 3.0.4
  • dulwich: 0.19.14 => 0.19.15
  • mako: 1.1.0 = > 1.1.2
  • mercurial: 5.1.1 => 5.3.1
  • psutil: 5.6.7 => 5.7.0
  • pyperf: 1.7.0 => 2.0.0
  • sqlalchemy: 1.3.12 => 1.3.15
  • sympy: 1.5 => 1.5.1
  • tornado: 6.0.3 => 6.0.4
• Remove six, html5lib and mercurial requirements.
• pip-tools (pip-compile) is now used to update dependencies

• Enable pyflate benchmarks on Python 3.
• Remove spambayes benchmark: it is not compatible with Python 3.
• Remove 2n3:benchmark group.
• Drop Python 2.7 support: old Django and Tornado versions are not compatible with incoming Python 3.9.
• Disable html5lib benchmark temporarily, since it's no longer compatible with Python 3.9.
• Update requirements:
  • Django: 1.11.22 => 3.0
  • Mako: 1.0.14 => 1.1.0
  • SQLAlchemy: 1.3.6 => 1.3.12
  • certifi: 2019.6.16 => 2019.11.28
  • docutils: 0.15.1 => 0.15.2
  • dulwich: 0.19.11 => 0.19.14
  • mercurial: 5.0.2 => 5.1.1
  • psutil: 5.6. => 5.6.7
  • pyperf: 1.6.1 => 1.7.0
  • six: 1.12. => 1.13.0
  • sympy: 1.4 => 1.5

• Enable hg_startup on Python 3
• Fix compatibility with Python 3.8 beta 2
• Update requirements:
  • certifi: 2019.3.9 => 2019.6.16
  • Chameleon: 3.6.1 => 3.6.2
  • Django: 1.11.20 => 1.11.22
  • docutils: 0.14 => 0.15.1.post1
  • Mako: 1.0.10 => 1.0.14
  • mercurial: 5.0 => 5.0.2
  • pathlib2: 2.3.3 => 2.3.4
  • psutil: 5.6.2 => 5.6.3
  • SQLAlchemy: 1.3.4 => 1.3.6

• Project renamed from "performance" to "pyperformance"
• Upgrade pyperf from version 1.6.0 to 1.6.1. The project has been renamed from "perf" to "pyperf". Update imports.
• Issue #54: Update Genshi to 0.7.3. It is now compatible with Python 3.8.
• Update requirements:
  • Mako: 1.0.9= > 1.0.10
  • SQLAlchemy: 1.3.3 => 1.3.4

• compile command: Add "pkg_only" option to benchmark.conf. Add support for native libraries that are installed but not on path. Patch by Robert Grimm.
• Update Travis configuration: use trusty image, use pip cache. Patch by Inada Naoki.
• Upgrade tornado to 5.1.1. Patch by Inada Naoki.
• Fix compile command on Mac OS: no program extension. Patch by Anthony Shaw.
• Update requirements:
  • Chameleon: 3.4 => 3.6.1
  • Django: 1.11.16 => 1.11.20
  • Genshi: 0.7.1 => 0.7.2
  • Mako: 1.0.7 => 1.0.9
  • MarkupSafe: 1.0 => 1.1.1
  • SQLAlchemy: 1.2.12 => 1.3.3
  • certifi: 2018.10.15 => 2019.3.9
  • dulwich: 0.19.6 => 0.19.11
  • mercurial: 4.7.2 => 5.0
  • mpmath: 1.0.0 => 1.1.0
  • pathlib2: 2.3.2 => 2.3.3
  • perf: 1.5.1 => 1.6.0
  • psutil: 5.4.7 => 5.6.2
  • six: 1.11.0 => 1.12.0
  • sympy: 1.3 => 1.4
  • tornado: 4.5.3 => 5.1.1

• python_startup: Add --exit option.
• Update requirements:
  • certifi: 2017.11.5 => 2018.10.15
  • Chameleon: 3.2 => 3.4
  • Django: 1.11.9 => 1.11.16
  • dulwich: 0.18.6 => 0.19.6
  • Genshi: 0.7 => 0.7.1
  • mercurial: 4.4.2 => 4.7.2
  • pathlib2: 2.3.0 => 2.3.2
  • psutil: 5.4.3 => 5.4.7
  • SQLAlchemy: 1.2.0 => 1.2.12
  • sympy: 1.1.1 => 1.3
• Fix issue #40 for pip 10 and newer: Remove indirect dependencies. Indirect dependencies were used to install cffi, but Mercurial 4.0 doesn't depend on cffi anymore.

• Fix inherit-environ: propagate to recursive invocations of performance in compile and compile_all commands.
• Fix the --track-memory option thanks to the update to perf 1.5.
• Update requirements
  • certifi: 2017.4.17 => 2017.11.5
  • Chameleon: 3.1 => 3.2
  • Django: 1.11.3 => 1.11.9
  • docutils: 0.13.1 => 0.14
  • dulwich: 0.17.3 => 0.18.6
  • html5lib: 0.999999999 => 1.0.1
  • Mako: 1.0.6 => 1.0.7
  • mercurial: 4.2.2 => 4.4.2
  • mpmath: 0.19 => 1.0.0
  • perf: 1.4 => 1.5.1 (fix --track-memory option)
  • psutil: 5.2.2 => 5.4.3
  • pyaes: 1.6.0 => 1.6.1
  • six: 1.10.0 => 1.11.0
  • SQLAlchemy: 1.1.11 => 1.2.0
  • sympy: 1.0 => 1.1.1
  • tornado: 4.5.1 => 4.5.3

• Change warn to warning in bm_logging.py. In Python 3, Logger.warn() calls warnings.warn() to log a deprecation warning, so is slower than Logger.warning().
• Add again the logging_silent microbenchmark suite.
• compile command: update the Git repository before getting the revision
• Update requirements
  • perf: 1.3 => 1.4 (fix parse_cpu_list(): strip also NUL characters)
  • Django: 1.11.1 => 1.11.3
  • mercurial: 4.2 => 4.2.2
  • pathlib2: 2.2.1 => 2.3.0
  • SQLAlchemy: 1.1.10 => 1.1.11

• On the 2.x branch on CPython, compile now pass --enable-unicode=ucs4 to the configure script on all platforms, except on Windows which uses UTF-16 because of its 16-bit wchar_t.
• The float benchmark now uses __slots__ on the Point class.
• Remove the following microbenchmarks. They have been moved to the pymicrobench project because they are too short, not representative of real applications and are too unstable.
  • pybench microbenchmark suite
  • call_simple
  • call_method
  • call_method_unknown
  • call_method_slots
  • logging_silent: values are faster than 1 ns on PyPy with 2^27 loops! (and around 0.7 us on CPython)
• Update requirements
  • Django: 1.11 => 1.11.1
  • SQLAlchemy: 1.1.9 => 1.1.10
  • certifi: 2017.1.23 => 2017.4.17
  • perf: 1.2 => 1.3
  • mercurial: 4.1.2 => 4.2
  • tornado: 4.4.3 => 4.5.1

• Create a new documentation at: http://pyperformance.readthedocs.io/
• Add "CPython results, 2017" to the doc: significant performance changes, significant optimizations, timeline, etc.
• The show command doesn't need to create a virtual env anymore.
• Add new commands:
  • pyperformance compile: compile, install and benchmark
  • pyperformance compile_all: benchmark multiple branches and revisions of Python
  • pyperformance upload: upload a JSON file to a Codespeed
• setup.py: add dependencies to perf and six modules.
• bm_xml_etree now uses "_pure_python" in benchmark names if the accelerator is explicitly disabled.
• Upgrade requirements:
  • Django: 1.10.6 -> 1.11
  • SQLAlchemy: 1.1.6 -> 1.1.9
  • mercurial: 4.1.1 -> 4.1.2
  • perf: 1.1 => 1.2
  • psutil: 5.2.1 -> 5.2.2
  • tornado: 4.4.2 -> 4.4.3
  • webencodings: 0.5 -> 0.5.1
• perf 1.2 now calibrates the number of warmups on PyPy.
• On Python 3.5a0: force pip 7.1.2 and setuptools 18.5: https://sourceforge.net/p/pyparsing/bugs/100/

• Upgrade Dulwich to 0.17.3 to support PyPy older than 5.6: see jelmer/dulwich#509
• Fix ResourceWarning warnings: close explicitly files and sockets.
• scripts: replace Mercurial commands with Git commands.
• Upgrade requirements:
  • dulwich: 0.17.1 => 0.17.3
  • perf: 1.0 => 1.1
  • psutil: 5.2.0 => 5.2.1

• Upgrade requirements:
  • certifi: 2016.9.26 => 2017.1.23
  • Chameleon: 3.0 => 3.1
  • Django: 1.10.5 => 1.10.6
  • MarkupSafe: 0.23 => 1.0
  • dulwich: 0.16.3 => 0.17.1
  • mercurial: 4.0.2 => 4.1.1
  • pathlib2: 2.2.0 => 2.2.1
  • perf: 0.9.3 => 1.0
  • psutil: 5.0.1 => 5.2.0
  • SQLAlchemy: 1.1.4 => 1.1.6

• Fix Windows support (upgrade perf from 0.9.0 to 0.9.3)
• Upgrade requirements:
  • Chameleon: 2.25 => 3.0
  • Django: 1.10.3 => 1.10.5
  • docutils: 0.12 => 0.13.1
  • dulwich: 0.15.0 => 0.16.3
  • mercurial: 4.0.0 => 4.0.2
  • perf: 0.9.0 => 0.9.3
  • psutil: 5.0.0 => 5.0.1

• Add mdp benchmark: battle with damages and topological sorting of nodes in a graph
• The default benchmark group now include all benchmarks but pybench
• If a benchmark fails, log an error, continue to execute following benchmarks, but exit with error code 1.
• Remove deprecated benchmarks: threading_threaded_count and threading_iterative_count. It wasn't possible to run them anyway.
• dulwich requirement is now optional since its installation fails on Windows.
• Upgrade requirements:
  • Mako: 1.0.5 => 1.0.6
  • Mercurial: 3.9.2 => 4.0.0
  • SQLAlchemy: 1.1.3 => 1.1.4
  • backports-abc: 0.4 => 0.5

• Add sqlalchemy_imperative benchmark: it wasn't registered properly
• The list command now only lists the benchmark that the run command will run. The list command gets a new -b/--benchmarks option.
• Rewrite the code creating the virtual environment to test correctly pip. Download and run get-pip.py if pip installation failed.
• Upgrade requirements:
  • perf: 0.8.2 => 0.9.0
  • Django: 1.10.2 => 1.10.3
  • Mako: 1.0.4 => 1.0.5
  • psutil: 4.3.1 => 5.0.0
  • SQLAlchemy: 1.1.2 => 1.1.3
• Remove virtualenv dependency

• Fix setup.py: include also performance/benchmarks/data/asyncio.git/

• Add regex_dna benchmark
• The run command now fails with an error if no benchmark was run.
• genshi, logging, scimark, sympy and xml_etree scripts now run all sub-benchmarks by default
• Rewrite pybench using perf: remove the old legacy code to calibrate and run benchmarks, reuse perf.Runner API.
• Change heuristic to create the virtual environment, tried commands:
  • python -m venv
  • python -m virtualenv
  • virtualenv -p python
• The creation of the virtual environment now ensures that pip works to detect "python3 -m venv" which doesn't install pip.
• Upgrade perf dependency from 0.7.12 to 0.8.2: update all benchmarks to the new perf 0.8 API (which introduces incompatible changes)
• Update SQLAlchemy from 1.1.1 to 1.1.2

New benchmarks:

• Add crypto_pyaes: Benchmark a pure-Python implementation of the AES block-cipher in CTR mode using the pyaes module (version 1.6.0). Add pyaes dependency.
• Add sympy: Benchmark on SymPy. Add scipy dependency.
• Add scimark benchmark
• Add deltablue: DeltaBlue benchmark
• Add dulwich_log: Iterate on commits of the asyncio Git repository using the Dulwich module. Add dulwich (and mpmath) dependencies.
• Add pyflate: Pyflate benchmark, tar/bzip2 decompressor in pure Python
• Add sqlite_synth benchmark: Benchmark Python aggregate for SQLite
• Add genshi benchmark: Render template to XML or plain text using the Genshi module. Add Genshi dependency.
• Add sqlalchemy_declarative and sqlalchemy_imperative benchmarks: SQLAlchemy Declarative and Imperative benchmarks using SQLite. Add SQLAlchemy dependency.

Enhancements:

• compare command now fails if the performance versions are different
• nbody: add --reference and --iterations command line options.
• chaos: add --width, --height, --thickness, --filename and --rng-seed command line options
• django_template: add --table-size command line option
• json_dumps: add --cases command line option
• pidigits: add --digits command line option
• raytrace: add --width, --height and --filename command line options
• Port html5lib benchmark to Python 3
• Enable pickle_pure_python and unpickle_pure_python on Python 3 (code was already compatible with Python 3)
• Creating the virtual environment doesn't inherit environment variables (especially PYTHONPATH) by default anymore: --inherit-environ command line option must now be used explicitly.

Bugfixes:

• chaos benchmark now also reset the random module at each sample to get more reproductible benchmark results
• Logging benchmarks now truncate the in-memory stream before each benchmark run

Rename benchmarks:

• Rename benchmarks to get a consistent name between the command line and benchmark name in the JSON file.

• Rename pickle benchmarks:

  • slowpickle becomes pickle_pure_python
  • slowunpickle becomes unpickle_pure_python
  • fastpickle becomes pickle
  • fastunpickle becomes unpickle

• Rename ElementTree benchmarks: replace etree_ prefix with xml_etree_.
• Rename hexiom2 to hexiom_level25 and explicitly pass --level=25 parameter
• Rename json_load to json_loads
• Rename json_dump_v2 to json_dumps (and remove the deprecated json_dump benchmark)
• Rename normal_startup to python_startup, and startup_nosite to python_startup_no_site
• Rename threaded_count to threading_threaded_count, rename iterative_count to threading_iterative_count
• Rename logging benchmarks:
  • silent_logging to logging_silent
  • simple_logging to logging_simple
  • formatted_logging to logging_format

Minor changes:

• Update dependencies
• Remove broken --args command line option.

• Add a new show command to display a benchmark file
• Issue #11: Display Python version in compare. Display also the performance version.
• CPython issue #26383; csv output: don't truncate digits for timings shorter than 1 us
• compare: Use sample unit of benchmarks, format values in the table output using the unit
• compare: Fix the table output if benchmarks only contain a single sample
• Remove unused -C/--control_label and -E/--experiment_label options
• Update perf dependency to 0.7.11 to get Benchmark.get_unit() and BenchmarkSuite.get_metadata()

• Add --csv option to the compare command
• Fix compare -O table output format
• Freeze indirect dependencies in requirements.txt
• run: add --track-memory option to track the memory peak usage
• Update perf dependency to 0.7.8 to support memory tracking and the new --inherit-environ command line option
• If virtualenv command fail, try another command to create the virtual environment: catch virtualenv error
• The first command to upgrade pip to version >= 6.0 now uses the pip binary rather than python -m pip to support pip 1.0 which doesn't support python -m pip CLI.
• Update Django (1.10.1), Mercurial (3.9.1) and psutil (4.3.1)
• Rename --inherit_env command line option to --inherit-environ and fix it

• Update Django dependency to 1.10
• Update Chameleon dependency to 2.24
• Add the --venv command line option
• Convert Python startup, Mercurial startup and 2to3 benchmarks to perf scripts (bm_startup.py, bm_hg_startup.py and bm_2to3.py)
• Pass the --affinity option to perf scripts rather than using the taskset command
• Put more installer and optional requirements into performance/requirements.txt
• Cached .pyc files are no more removed before running a benchmark. Use venv recreate command to update a virtual environment if required.
• The broken --track_memory option has been removed. It will be added back when it will be fixed.
• Add performance version to metadata
• Upgrade perf dependency to 0.7.5 to get Benchmark.update_metadata()

• Windows is now supported
• Add a new venv command to show, create, recrete or remove the virtual environment.
• Fix pybench benchmark (update to perf 0.7.4 API)
• performance now tries to install the psutil module on CPython for better system metrics in metadata and CPU pinning on Python 2.
• The creation of the virtual environment now also tries virtualenv and venv Python modules, not only the virtualenv command.
• The development version of performance now installs performance with "pip install -e <path_to_performance>"
• The GitHub project was renamed from python/benchmarks to python/performance.

• Fix the creation of the virtual environment
• Rename pybenchmarks script to pyperformance
• Add -p/--python command line option
• Add __main__ module to be able to run: python3 -m performance

• First release after the conversion to the perf module and move to GitHub
• Removed benchmarks
  • django_v2, django_v3
  • rietveld
  • spitfire (and psyco): Spitfire is not available on PyPI
  • pystone
  • gcbench
  • tuple_gc_hell

Projected moved to https://github.com/python/performance in August 2016. Files reorganized, benchmarks patched to use the perf module to run benchmark in multiple processes.

Project started in December 2008 by Collin Winter and Jeffrey Yasskin for the Unladen Swallow project. The project was hosted at https://hg.python.org/benchmarks until Feb 2016