s3-tests/s3tests/rand_readwrite.py
2011-07-20 11:06:30 -07:00

138 lines
4.5 KiB
Python

#!/usr/bin/python
import gevent
import gevent.pool
import gevent.queue
import gevent.monkey; gevent.monkey.patch_all()
import optparse
import sys
import time
import random
import yaml
import generate_objects
import realistic
import common
NANOSECOND = int(1e9)
def reader(bucket, name, queue):
while True:
count = 0
for key in bucket.list():
fp = realistic.FileVerifier()
start = time.time()
key.get_contents_to_file(fp)
end = time.time()
elapsed = end - start
queue.put(
dict(
type='r',
bucket=bucket.name,
key=key.name,
#TODO chunks
start=start,
duration=int(round(elapsed * NANOSECOND)),
#TODO error, fp.valid()
#TODO name
),
)
count += 1
if count == 0:
gevent.sleep(1)
def writer(bucket, name, queue, quantity=1, file_size=1, file_stddev=0, file_name_seed=None):
while True:
r = random.randint(0, 65535)
r2 = r
if file_name_seed != None:
r2 = file_name_seed
files = generate_objects.get_random_files(
quantity=quantity,
mean=1024 * file_size,
stddev=1024 * file_stddev,
seed=r,
)
start = time.time()
generate_objects.upload_objects(bucket, files, r2)
end = time.time()
elapsed = end - start
queue.put(
dict(
type='w',
bucket=bucket.name,
#TODO this current combines stats for multiple files? key=key.name,
#TODO chunks
start=start,
duration=int(round(elapsed * NANOSECOND)),
#TODO error
),
)
def parse_options():
parser = optparse.OptionParser()
parser.add_option("-t", "--time", dest="duration", type="float",
help="duration to run tests (seconds)", default=5, metavar="SECS")
parser.add_option("-r", "--read", dest="num_readers", type="int",
help="number of reader threads", default=0, metavar="NUM")
parser.add_option("-w", "--write", dest="num_writers", type="int",
help="number of writer threads", default=2, metavar="NUM")
parser.add_option("-s", "--size", dest="file_size", type="float",
help="file size to use, in kb", default=1024, metavar="KB")
parser.add_option("-q", "--quantity", dest="quantity", type="int",
help="number of files per batch", default=1, metavar="NUM")
parser.add_option("-d", "--stddev", dest="stddev", type="float",
help="stddev of file size", default=0, metavar="KB")
parser.add_option("-W", "--rewrite", dest="rewrite", action="store_true",
help="rewrite the same files (total=quantity)")
parser.add_option("--no-cleanup", dest="cleanup", action="store_false",
help="skip cleaning up all created buckets", default=True)
return parser.parse_args()
def main():
# parse options
(options, args) = parse_options()
try:
# setup
common.setup()
bucket = common.get_new_bucket()
print "Created bucket: {name}".format(name=bucket.name)
r = None
if (options.rewrite):
r = random.randint(0, 65535)
q = gevent.queue.Queue()
# main work
print "Using file size: {size} +- {stddev}".format(size=options.file_size, stddev=options.stddev)
print "Spawning {r} readers and {w} writers...".format(r=options.num_readers, w=options.num_writers)
group = gevent.pool.Group()
for x in xrange(options.num_writers):
group.spawn(writer, bucket,
name=x,
queue=q,
file_size=options.file_size,
file_stddev=options.stddev,
quantity=options.quantity,
file_name_seed=r,
)
for x in xrange(options.num_readers):
group.spawn(reader, bucket,
name=x,
queue=q,
)
def stop():
group.kill(block=True)
q.put(StopIteration)
gevent.spawn_later(options.duration, stop)
yaml.safe_dump_all(q, stream=sys.stdout, default_flow_style=False)
finally:
# cleanup
if options.cleanup:
common.teardown()