cpython/Tools/scripts/startuptime.py
Guido van Rossum 1037ca5a8e
bpo-45850: Implement deep-freeze on Windows (#29648)
Implement changes to build with deep-frozen modules on Windows.
Note that we now require Python 3.10 as the "bootstrap" or "host" Python.
This causes a modest startup speed (around 7%) on Windows.
2021-11-22 10:09:48 -08:00

23 lines
435 B
Python

# Quick script to time startup for various binaries
import subprocess
import sys
import time
NREPS = 100
def main():
binaries = sys.argv[1:]
for bin in binaries:
t0 = time.time()
for _ in range(NREPS):
result = subprocess.run([bin, "-c", "pass"])
result.check_returncode()
t1 = time.time()
print(f"{(t1-t0)/NREPS:6.3f} {bin}")
if __name__ == "__main__":
main()