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|
"""Benchmark diskcache.DjangoCache
$ export PYTHONPATH=/Users/grantj/repos/python-diskcache
$ python tests/benchmark_djangocache.py > tests/timings_djangocache.txt
"""
import collections as co
import multiprocessing as mp
import os
import pickle
import random
import shutil
import time
from utils import display
PROCS = 8
OPS = int(1e5)
RANGE = int(1.1e3)
WARMUP = int(1e3)
def setup():
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'tests.settings_benchmark')
import django
django.setup()
def worker(num, name):
setup()
from django.core.cache import caches
obj = caches[name]
random.seed(num)
timings = co.defaultdict(list)
time.sleep(0.01) # Let other processes start.
for count in range(OPS):
key = str(random.randrange(RANGE)).encode('utf-8')
value = str(count).encode('utf-8') * random.randrange(1, 100)
choice = random.random()
if choice < 0.900:
start = time.time()
result = obj.get(key)
end = time.time()
miss = result is None
action = 'get'
elif choice < 0.990:
start = time.time()
result = obj.set(key, value)
end = time.time()
miss = result is False
action = 'set'
else:
start = time.time()
result = obj.delete(key)
end = time.time()
miss = result is False
action = 'delete'
if count > WARMUP:
delta = end - start
timings[action].append(delta)
if miss:
timings[action + '-miss'].append(delta)
with open('output-%d.pkl' % num, 'wb') as writer:
pickle.dump(timings, writer, protocol=pickle.HIGHEST_PROTOCOL)
def prepare(name):
setup()
from django.core.cache import caches
obj = caches[name]
for key in range(RANGE):
key = str(key).encode('utf-8')
obj.set(key, key)
try:
obj.close()
except Exception:
pass
def dispatch():
setup()
from django.core.cache import caches # noqa
for name in ['locmem', 'memcached', 'redis', 'diskcache', 'filebased']:
shutil.rmtree('tmp', ignore_errors=True)
preparer = mp.Process(target=prepare, args=(name,))
preparer.start()
preparer.join()
processes = [
mp.Process(target=worker, args=(value, name))
for value in range(PROCS)
]
for process in processes:
process.start()
for process in processes:
process.join()
timings = co.defaultdict(list)
for num in range(PROCS):
filename = 'output-%d.pkl' % num
with open(filename, 'rb') as reader:
output = pickle.load(reader)
for key in output:
timings[key].extend(output[key])
os.remove(filename)
display(name, timings)
if __name__ == '__main__':
import argparse
parser = argparse.ArgumentParser(
formatter_class=argparse.ArgumentDefaultsHelpFormatter,
)
parser.add_argument(
'-p',
'--processes',
type=int,
default=PROCS,
help='Number of processes to start',
)
parser.add_argument(
'-n',
'--operations',
type=float,
default=OPS,
help='Number of operations to perform',
)
parser.add_argument(
'-r',
'--range',
type=int,
default=RANGE,
help='Range of keys',
)
parser.add_argument(
'-w',
'--warmup',
type=float,
default=WARMUP,
help='Number of warmup operations before timings',
)
args = parser.parse_args()
PROCS = int(args.processes)
OPS = int(args.operations)
RANGE = int(args.range)
WARMUP = int(args.warmup)
dispatch()
|
