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#!/usr/bin/env python3
# Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
from __future__ import absolute_import, division, print_function, unicode_literals
import argparse
import random
import subprocess
import sys
import time
def generate_runtimes(total_runtime):
# combination of short runtimes and long runtimes, with heavier
# weight on short runtimes
possible_runtimes_sec = list(range(1, 10)) + list(range(1, 20)) + [100, 1000]
runtimes = []
while total_runtime > 0:
chosen = random.choice(possible_runtimes_sec)
chosen = min(chosen, total_runtime)
runtimes.append(chosen)
total_runtime -= chosen
return runtimes
def main(args):
runtimes = generate_runtimes(int(args.runtime_sec))
print(
"Going to execute write stress for " + str(runtimes)
) # noqa: E999 T25377293 Grandfathered in
first_time = True
for runtime in runtimes:
kill = random.choice([False, True])
cmd = "./write_stress --runtime_sec=" + ("-1" if kill else str(runtime))
if len(args.db) > 0:
cmd = cmd + " --db=" + args.db
if first_time:
first_time = False
else:
# use current db
cmd = cmd + " --destroy_db=false"
if random.choice([False, True]):
cmd = cmd + " --delete_obsolete_files_with_fullscan=true"
if random.choice([False, True]):
cmd = cmd + " --low_open_files_mode=true"
print(
"Running write_stress for %d seconds (%s): %s"
% (runtime, ("kill-mode" if kill else "clean-shutdown-mode"), cmd)
)
child = subprocess.Popen([cmd], shell=True)
killtime = time.time() + runtime
while not kill or time.time() < killtime:
time.sleep(1)
if child.poll() is not None:
if child.returncode == 0:
break
else:
print(
"ERROR: write_stress died with exitcode=%d\n" % child.returncode
)
sys.exit(1)
if kill:
child.kill()
# breathe
time.sleep(3)
if __name__ == "__main__":
random.seed(time.time())
parser = argparse.ArgumentParser(
description="This script runs and kills \
write_stress multiple times"
)
parser.add_argument("--runtime_sec", default="1000")
parser.add_argument("--db", default="")
args = parser.parse_args()
main(args)
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