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# Copyright (C) 2024 The Qt Company Ltd.
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
"""
sizebench.py
Benchmark the size reduction of QtCore, QtGui and QtWidgets binaries.
The project will be built twice in release mode (unchecked)
- with option "--unoptimize=all"
- without any option.
Then values and relative improvement are printed.
No argument: Use a default Python for each platform (author specific).
--python <python> use that specific python interpreter
--dry-run try it first without compilation
--pip automatically install the needed modules
--absolute compare against the status from
b887919ea244a057f15be9c1cdc652538e3fe9a0
Yocto: allow LLVM 14 for building PySide
2025-01-23 18:18
--limited-api yes|no default=yes
"""
import argparse
import getpass
import os
import platform
import re
import subprocess
import sys
from ast import literal_eval
from pathlib import Path
defaults = { # Python, extras
"Darwin": ("/Users/tismer/.pyenv/versions/3.12.5/bin/python3", []), # noqa: E241
"Windows": ("d:/py312_64/python.exe", []), # noqa: E241
"Linux": ("/home/ctismer/.pyenv/versions/3.12.5/bin/python3", []) # noqa: E241
}
reference = { # Limited API no / yes
"Darwin": (26165741, 26078531), # noqa: E241
"Windows": (15324160, 15631872), # noqa: E241
"Linux": (19203176, 19321976), # noqa: E241
}
if "tismer" not in getpass.getuser():
# assume a colleague.
defaults["Linux"] = "python", ["--qt-src-dir", "/~/qt-69/qt-69/qtbase"]
# defaults["Windows"] = "...", [...] # please insert your defaults
def setup_project_dir():
look_for = Path("testing")
here = Path(__file__).resolve().parent
while here / look_for not in here.iterdir():
parent = here.parent
if parent == here:
raise SystemError(f"{look_for} not found!")
here = parent
fsp = os.fspath(here)
if fsp not in sys.path:
sys.path.insert(0, fsp)
def get_build_dir():
from testing.buildlog import builds
if not builds.history:
raise
return builds.history[-1].build_dir
def check_allowed_python_versions(major, minor):
from build_scripts.main import config
pattern = r'Programming Language :: Python :: (\d+)\.(\d+)'
hist = []
for line in config.classifiers:
found = re.search(pattern, line)
if found:
ma = int(found.group(1))
mi = int(found.group(2))
if major == ma and minor == mi:
return True
hist.append((ma, mi))
raise ValueError(hist)
def get_result_size(build_dir):
result_dir = Path(build_dir) / "pyside6" / "PySide6"
sum = 0
awaited = 3
got = 0
with os.scandir(result_dir) as it:
for entry in it:
name = entry.name
if (name.startswith(("QtCore.", "QtGui.", "QtWidgets."))
and name.endswith((".so", ".pyd"))):
size = entry.stat().st_size
print(f"{name=} {size=}")
sum += size
got += 1
if awaited != got:
raise ValueError(f"got {got} values, expected {awaited}")
return sum
setup_project_dir()
plat = platform.system()
if __name__ == "__main__":
parser = argparse.ArgumentParser()
parser.add_argument("--python", "-p", nargs="?")
parser.add_argument("--dry-run", "-d", action="store_true")
parser.add_argument("--pip", action="store_true", help="""
Install the necessary modules automatically, which can save some trouble""")
parser.add_argument("--absolute", "-a", action="store_true", help="""
Measure against the state on 2025-01-23""")
parser.add_argument("--limited-api", "-l", choices=["yes", "no"], default="yes", help="""
Use of limited API. Recommended because this is the CI default""")
args = parser.parse_args()
python = args.python or defaults[plat][0] if plat in defaults else args.python
python = Path(python).expanduser()
if not python.exists:
raise ValueError(f"Python executable `{python}` not found")
version = subprocess.check_output([python, "-c", "import sys; print(sys.version_info[:2])"])
major, minor = literal_eval(version.decode())
try:
check_allowed_python_versions(major, minor)
except ValueError as e:
msg = " ".join(f"{ma}.{mi}" for (ma, mi) in e.args[0])
raise ValueError(f"Python versions allowed = {msg}, got {major}.{minor}") from None
needs_imports = ["packaging", "setuptools"]
if args.pip:
# This way, setuptools seems to install reliably.
subprocess.run([python, "-m", "pip", "install"] + needs_imports)
subprocess.run([python, "-m", "pip", "uninstall", "-y"] + needs_imports)
subprocess.run([python, "-m", "pip", "install"] + needs_imports)
options = [
"setup.py", "build", "--limited-api=" + args.limited_api, "--skip-docs",
"--log-level", "quiet", "--unity", "--no-qt-tools",
"--module-subset=Core,Gui,Widgets"] + defaults[plat][1]
options_base = options + ["--unoptimize=all"]
options_best = options
use_limited_api = args.limited_api == "yes"
skip = args.dry_run
if args.absolute:
res_base = reference[plat][use_limited_api]
else:
cmd = [python] + options_base
if not skip:
subprocess.run(cmd)
build_dir = get_build_dir()
res_base = get_result_size(build_dir)
cmd = [python] + options_best
if not skip:
subprocess.run(cmd)
build_dir = get_build_dir()
res_best = get_result_size(build_dir)
add_text = " on 2025-01-27" if args.absolute else ""
print()
print(f"Compiling with {python}")
print(f"Platform = {plat} limited_api = {args.limited_api}")
print(f"base size = {res_base}{add_text}")
print(f"best size = {res_best}")
print(f"improvement {(res_base - res_best) / res_base:%}")
if skip:
raise ValueError("This result is only fake. Please run it again without the "
"--dry-run argument")
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