premiere-libtorrent/examples/run_benchmarks.py

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#!/usr/bin/env python
from __future__ import print_function
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import sys
import os
import resource
import shutil
import shlex
import time
import subprocess
import random
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import signal
import hashlib
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# this is a disk I/O benchmark script. It runs menchmarks
# over different filesystems, different cache sizes and
# different number of peers (can be used to find a reasonable
# range for unchoke slots).
# it also measures performance improvements of re-ordering
# read requests based on physical location and OS hints
# like posix_fadvice(FADV_WILLNEED). It can also be used
# for the AIO branch to measure improvements over the
# classic thread based disk I/O
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# to set up the test, build the example directory in release
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# with statistics=on and copy fragmentation_test, client_test
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# and connection_tester to a directory called 'stage_aio'
# and 'stage_syncio' (or make a symbolic link to the bjam
# output directory).
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# make sure gnuplot is installed.
# the following lists define the space tests will be run in
# variables to test. All these are run on the first
# entry in the filesystem list.
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cache_sizes = [0, 32768, 400000]
peers = [200, 500, 1000]
builds = ['rtorrent', 'utorrent', 'aio', 'syncio']
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# the drives are assumed to be mounted under ./<name>
# or have symbolic links to them.
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filesystem = ['xfs', 'ext4', 'ext3', 'reiser']
default_fs = filesystem[0]
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# the number of peers for the filesystem test. The
# idea is to stress test the filesystem by using a lot
# of peers, since each peer essentially is a separate
# read location on the platter
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default_peers = peers[1]
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# the amount of cache for the filesystem test
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# 5.5 GiB of cache
default_cache = cache_sizes[-1]
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# the number of seconds to run each test. It's important that
# this is shorter than what it takes to finish downloading
# the test torrent, since then the average rate will not
# be representative of the peak anymore
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# this has to be long enough to download a full copy
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# of the test torrent. It's also important for the
# test to be long enough that the warming up of the
# disk cache is not a significant part of the test,
# since download rates will be extremely high while downloading
# into RAM
test_duration = 200 # 700
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# make sure the environment is properly set up
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try:
if os.name == 'posix':
resource.setrlimit(resource.RLIMIT_NOFILE, (4000, 5000))
except BaseException:
if resource.getrlimit(resource.RLIMIT_NOFILE)[0] < 4000:
print('please set ulimit -n to at least 4000')
sys.exit(1)
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def build_stage_dirs():
ret = []
for i in builds[2:3]:
ret.append('stage_%s' % i)
return ret
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# make sure we have all the binaries available
binaries = ['client_test', 'connection_tester', 'fragmentation_test']
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for b in build_stage_dirs():
for i in binaries:
p = os.path.join(b, i)
if not os.path.exists(p):
print('make sure "%s" is available in ./%s' % (i, b))
sys.exit(1)
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for i in filesystem:
if not os.path.exists(i):
print(('the path "%s" does not exist. This is directory/mountpoint is ' +
'used as the download directory and is the filesystem that will be benchmarked ' +
'and need to exist.') % i)
sys.exit(1)
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# make sure we have a test torrent
if not os.path.exists('test.torrent'):
print('generating test torrent')
# generate a 100 GB torrent, to make sure it won't all fit in physical RAM
os.system('./stage_aio/connection_tester gen-torrent 10000 test.torrent')
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if not os.path.exists('test2.torrent'):
print('generating test torrent 2')
# generate a 6 GB torrent, to make sure it will fit in physical RAM
os.system('./stage_aio/connection_tester gen-torrent 6000 test2.torrent')
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# use a new port for each test to make sure they keep working
# this port is incremented for each test run
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port = 10000 + random.randint(0, 40000)
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def clear_caches():
if 'linux' in sys.platform:
os.system('sync')
open('/proc/sys/vm/drop_caches', 'w').write('3')
elif 'darwin' in sys.platform:
os.system('purge')
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def build_commandline(config, port):
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num_peers = config['num-peers']
torrent_path = config['torrent']
if config['build'] == 'utorrent':
try:
os.mkdir('utorrent_session')
except BaseException:
pass
cfg = open('utorrent_session/settings.dat', 'w+')
cfg.write('d')
cfg.write('20:ul_slots_per_torrenti%de' % num_peers)
cfg.write('17:conns_per_torrenti%de' % num_peers)
cfg.write('14:conns_globallyi%de' % num_peers)
cfg.write('9:bind_porti%de' % port)
cfg.write('19:dir_active_download%d:%s' % (len(config['save-path']), config['save-path']))
cfg.write('19:diskio.sparse_filesi1e')
cfg.write('14:cache.overridei1e')
cfg.write('19:cache.override_sizei%de' % int(config['cache-size'] * 16 / 1024))
cfg.write('17:dir_autoload_flagi1e')
cfg.write('12:dir_autoload8:autoload')
cfg.write('11:logger_maski4294967295e')
cfg.write('1:vi0e')
cfg.write('12:webui.enablei1e')
cfg.write('19:webui.enable_listeni1e')
cfg.write('14:webui.hashword20:' + hashlib.sha1('aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaadmin').digest())
cfg.write('10:webui.porti8080e')
cfg.write('10:webui.salt32:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa')
cfg.write('14:webui.username5:admin')
cfg.write('e')
cfg.close()
try:
os.mkdir('utorrent_session/autoload')
except BaseException:
pass
try:
shutil.copy(torrent_path, 'utorrent_session/autoload/')
except BaseException:
pass
return './utorrent-server-v3_0/utserver -logfile session_stats/alerts_log.txt -settingspath utorrent_session'
if config['build'] == 'rtorrent':
if os.path.exists('rtorrent_session'):
add_command = ''
else:
try:
os.mkdir('rtorrent_session')
except BaseException:
pass
# it seems rtorrent may delete the original torrent when it's being added
try:
shutil.copy(torrent_path, 'rtorrent_session/')
except BaseException:
pass
add_command = '-O load_start_verbose=rtorrent_session/%s ' % torrent_path
return ('rtorrent -d %s -n -p %d-%d -O max_peers=%d -O max_uploads=%d %s -s '
'rtorrent_session -O max_memory_usage=128000000000') % (
config['save-path'], port, port, num_peers, num_peers, add_command)
disable_disk = ''
if config['disable-disk']:
disable_disk = '-0'
return ('./stage_%s/client_test -k -N -H -M -B %d -l %d -S %d -T %d -c %d -C %d -s "%s" -p %d -E %d %s '
'-f session_stats/alerts_log.txt %s') % (
config['build'], test_duration, num_peers, num_peers, num_peers, num_peers, config['cache-size'],
config['save-path'], port, config['hash-threads'], disable_disk, torrent_path)
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def delete_files(files):
for i in files:
try:
os.remove(i)
except BaseException:
try:
shutil.rmtree(i)
except BaseException:
try:
if os.path.exists(i):
print('failed to delete %s' % i)
except BaseException:
pass
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# typically the schedulers available are 'noop', 'deadline' and 'cfq'
def build_test_config(fs=default_fs, num_peers=default_peers, cache_size=default_cache,
test='upload', build='aio', profile='', hash_threads=1, torrent='test.torrent',
disable_disk=False):
config = {'test': test, 'save-path': os.path.join('./', fs), 'num-peers': num_peers,
'cache-size': cache_size, 'build': build, 'profile': profile,
'hash-threads': hash_threads, 'torrent': torrent, 'disable-disk': disable_disk}
return config
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def prefix_len(text, prefix):
for i in range(1, len(prefix)):
if (not text.startswith(prefix[0:i])):
return i - 1
return len(prefix)
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def device_name(path):
mount = subprocess.Popen('mount', stdout=subprocess.PIPE)
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max_match_len = 0
match_device = ''
path = os.path.abspath(path)
for mp in mount.stdout.readlines():
c = mp.split(' ')
device = c[0]
mountpoint = c[2]
prefix = prefix_len(path, mountpoint)
if prefix > max_match_len:
max_match_len = prefix
match_device = device
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device = match_device
device = device.split('/')[-1][0:3]
print('device for path: %s -> %s' % (path, device))
return device
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def build_target_folder(config):
test = 'seed'
if config['test'] == 'upload':
test = 'download'
elif config['test'] == 'dual':
test = 'dual'
if 'linux' in sys.platform:
io_scheduler = open('/sys/block/%s/queue/scheduler' %
device_name(config['save-path'])).read().split('[')[1].split(']')[0]
else:
io_scheduler = sys.platform
no_disk = ''
if config['disable-disk']:
no_disk = '_no-disk'
return 'results_%s_%s_%d_%d_%s_%s_h%d%s' % (config['build'],
test,
config['num-peers'],
config['cache-size'],
os.path.split(
config['save-path'])[1],
io_scheduler,
config['hash-threads'],
no_disk)
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def find_library(name):
paths = ['/usr/lib64/', '/usr/local/lib64/', '/usr/lib/', '/usr/local/lib/']
for p in paths:
try:
if os.path.exists(p + name):
return p + name
except BaseException:
pass
return name
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def find_binary(names):
paths = ['/usr/bin/', '/usr/local/bin/']
for n in names:
for p in paths:
try:
if os.path.exists(p + n):
return p + n
except BaseException:
pass
return names[0]
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def run_test(config):
target_folder = build_target_folder(config)
if os.path.exists(target_folder):
print('results already exists, skipping test (%s)' % target_folder)
return
print('\n\n*********************************')
print('* RUNNING TEST *')
print('*********************************\n\n')
print('%s %s' % (config['build'], config['test']))
# make sure any previous test file is removed
# don't clean up unless we're running a download-test, so that we leave the test file
# complete for a seed test.
delete_files(['utorrent_session/settings.dat', 'utorrent_session/settings.dat.old', 'asserts.log'])
if config['test'] == 'upload' or config['test'] == 'dual':
print('deleting files')
delete_files([os.path.join(config['save-path'],
'stress_test_file'),
'.ses_state',
os.path.join(config['save-path'],
'.resume'),
'utorrent_session',
'.dht_state',
'session_stats',
'rtorrent_session'])
try:
os.mkdir('session_stats')
except BaseException:
pass
# save off the command line for reference
global port
cmdline = build_commandline(config, port)
binary = cmdline.split(' ')[0]
environment = None
if config['profile'] == 'tcmalloc':
environment = {'LD_PRELOAD': find_library('libprofiler.so.0'), 'CPUPROFILE': 'session_stats/cpu_profile.prof'}
if config['profile'] == 'memory':
environment = {'LD_PRELOAD': find_library('libprofiler.so.0'), 'HEAPPROFILE': 'session_stats/heap_profile.prof'}
if config['profile'] == 'perf':
cmdline = 'perf timechart record --call-graph --output=session_stats/perf_profile.prof ' + cmdline
f = open('session_stats/cmdline.txt', 'w+')
f.write(cmdline)
f.close()
f = open('session_stats/config.txt', 'w+')
print(config, file=f)
f.close()
print('clearing disk cache')
clear_caches()
print('OK')
client_output = open('session_stats/client.output', 'w+')
client_error = open('session_stats/client.error', 'w+')
print('launching: %s' % cmdline)
client = subprocess.Popen(
shlex.split(cmdline),
stdout=client_output,
stdin=subprocess.PIPE,
stderr=client_error,
env=environment)
print('OK')
# enable disk stats printing
if config['build'] != 'rtorrent' and config['build'] != 'utorrent':
print('x', end=' ', file=client.stdin)
time.sleep(4)
cmdline = './stage_aio/connection_tester %s %d 127.0.0.1 %d %s' % (
config['test'], config['num-peers'], port, config['torrent'])
print('launching: %s' % cmdline)
tester_output = open('session_stats/tester.output', 'w+')
tester = subprocess.Popen(shlex.split(cmdline), stdout=tester_output)
print('OK')
time.sleep(2)
print('\n')
i = 0
while True:
time.sleep(1)
tester.poll()
if tester.returncode is not None:
print('tester terminated')
break
client.poll()
if client.returncode is not None:
print('client terminated')
break
print('\r%d / %d' % (i, test_duration), end=' ')
sys.stdout.flush()
i += 1
if config['test'] != 'upload' and config['test'] != 'dual' and i >= test_duration:
break
print('\n')
if client.returncode is None:
try:
print('killing client')
client.send_signal(signal.SIGINT)
except BaseException:
pass
time.sleep(10)
client.wait()
tester.wait()
tester_output.close()
client_output.close()
terminate = False
if tester.returncode != 0:
print('tester returned %d' % tester.returncode)
terminate = True
if client.returncode != 0:
print('client returned %d' % client.returncode)
terminate = True
try:
shutil.copy('asserts.log', 'session_stats/')
except BaseException:
pass
try:
shutil.move('libtorrent_logs0', 'session_stats/')
except BaseException:
pass
try:
shutil.move('libtorrent_logs%s' % port, 'session_stats/')
except BaseException:
pass
# run fragmentation test
print('analyzing fragmentation')
os.system('./stage_aio/fragmentation_test test.torrent %s' % (config['save-path']))
try:
shutil.copy('fragmentation.log', 'session_stats/')
except BaseException:
pass
shutil.copy('fragmentation.gnuplot', 'session_stats/')
try:
shutil.copy('file_access.log', 'session_stats/')
except BaseException:
pass
os.system('filefrag %s >session_stats/filefrag.out' % config['save-path'])
os.system('filefrag -v %s >session_stats/filefrag_verbose.out' % config['save-path'])
os.chdir('session_stats')
# parse session stats
print('parsing session log')
os.system('python ../../parse_session_stats.py *.0000.log')
os.system('../stage_aio/parse_access_log file_access.log %s' %
(os.path.join('..', config['save-path'], 'stress_test_file')))
os.chdir('..')
if config['profile'] == 'tcmalloc':
print('analyzing CPU profile [%s]' % binary)
os.system('%s --pdf %s session_stats/cpu_profile.prof >session_stats/cpu_profile.pdf' %
(find_binary(['google-pprof', 'pprof']), binary))
if config['profile'] == 'memory':
for i in range(1, 300):
profile = 'session_stats/heap_profile.prof.%04d.heap' % i
try:
os.stat(profile)
except BaseException:
break
print('analyzing heap profile [%s] %d' % (binary, i))
os.system('%s --pdf %s %s >session_stats/heap_profile_%d.pdf' %
(find_binary(['google-pprof', 'pprof']), binary, profile, i))
if config['profile'] == 'perf':
print('analyzing CPU profile [%s]' % binary)
os.system('perf timechart --input=session_stats/perf_profile.prof --output=session_stats/profile_timechart.svg')
os.system(('perf report --input=session_stats/perf_profile.prof --threads --show-nr-samples '
'--vmlinux vmlinuz-2.6.38-8-generic.bzip >session_stats/profile.txt'))
# move the results into its final place
print('saving results')
os.rename('session_stats', build_target_folder(config))
port += 1
if terminate:
sys.exit(1)
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for h in range(0, 7):
config = build_test_config(
num_peers=30,
build='aio',
test='upload',
torrent='test.torrent',
hash_threads=h,
disable_disk=True)
run_test(config)
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sys.exit(0)
for b in ['aio', 'syncio']:
for test in ['dual', 'upload', 'download']:
config = build_test_config(build=b, test=test)
run_test(config)
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sys.exit(0)
for b in builds:
for test in ['upload', 'download']:
config = build_test_config(build=b, test=test)
run_test(config)
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for p in peers:
for test in ['upload', 'download']:
config = build_test_config(num_peers=p, test=test)
run_test(config)
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for c in cache_sizes:
for test in ['upload', 'download']:
config = build_test_config(cache_size=c, test=test)
run_test(config)
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for fs in filesystem:
for test in ['upload', 'download']:
config = build_test_config(fs=fs, test=test)
run_test(config)