import subprocess
import sys
import perf

# Simulate a Python process which allocated a lot of memory
# to see the speedup of vfork when spawing a child process
BIG_ALLOC = b'x' * (2 * 1024 * 1024 * 1024)   # 2 GiB

# Program with very short execution time and very small memory footprint
ARGS = ["/usr/bin/pwd"]

def func():
    subprocess.run(ARGS, close_fds=False, stdout=subprocess.PIPE)

runner = perf.Runner()
runner.bench_func('func', func)