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perf_test_utils.py
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#!/usr/bin/env python
# Copyright 2018 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Utilities for Cronet performance tests."""
import logging
import os
import posixpath
import subprocess
import tempfile
from time import sleep
from cronet.tools import android_rndis_forwarder
REPOSITORY_ROOT = os.path.abspath(os.path.join(
os.path.dirname(__file__), '..', '..', '..'))
BUILD_TYPE = 'Release'
BUILD_DIR = os.path.join(REPOSITORY_ROOT, 'out', BUILD_TYPE)
QUIC_SERVER = os.path.join(BUILD_DIR, 'quic_server')
CERT_PATH = os.path.join('net', 'data', 'ssl', 'certificates')
QUIC_CERT_DIR = os.path.join(REPOSITORY_ROOT, CERT_PATH)
QUIC_CERT_HOST = 'test.example.com'
QUIC_CERT_FILENAME = 'quic-chain.pem'
QUIC_CERT = os.path.join(QUIC_CERT_DIR, QUIC_CERT_FILENAME)
QUIC_KEY = os.path.join(QUIC_CERT_DIR, 'quic-leaf-cert.key')
APP_APK = os.path.join(BUILD_DIR, 'apks', 'CronetPerfTest.apk')
APP_PACKAGE = 'org.chromium.net'
APP_ACTIVITY = '.CronetPerfTestActivity'
APP_ACTION = 'android.intent.action.MAIN'
HTTP_PORT = None # Value will be overridden by DEFAULT_BENCHMARK_CONFIG.
# TODO(pauljensen): Consider whether we can avoid loading this
# DEFAULT_BENCHMARK_CONFIG dict into globals.
DEFAULT_BENCHMARK_CONFIG = {
# Control various metric recording for further investigation.
'CAPTURE_NETLOG': False,
'CAPTURE_TRACE': False,
'CAPTURE_SAMPLED_TRACE': False,
# While running Cronet Async API benchmarks, indicate if callbacks should be
# run on network thread rather than posted back to caller thread. This allows
# measuring if thread-hopping overhead is significant.
'CRONET_ASYNC_USE_NETWORK_THREAD': False,
# A small resource for device to fetch from host.
'SMALL_RESOURCE': 'small.html',
'SMALL_RESOURCE_SIZE': 26,
# Number of times to fetch SMALL_RESOURCE.
'SMALL_ITERATIONS': 1000,
# A large resource for device to fetch from host.
'LARGE_RESOURCE': 'large.html',
'LARGE_RESOURCE_SIZE': 10000026,
# Number of times to fetch LARGE_RESOURCE.
'LARGE_ITERATIONS': 4,
# Ports of HTTP and QUIC servers on host.
'HTTP_PORT': 9000,
'QUIC_PORT': 9001,
# Maximum read/write buffer size to use.
'MAX_BUFFER_SIZE': 16384,
'HOST': QUIC_CERT_HOST,
'QUIC_CERT_FILE': QUIC_CERT_FILENAME,
}
# Add benchmark config to global state for easy access.
globals().update(DEFAULT_BENCHMARK_CONFIG)
# Pylint doesn't really interpret the file, so it won't find the definitions
# added from DEFAULT_BENCHMARK_CONFIG, so suppress the undefined variable
# warning.
#pylint: disable=undefined-variable
class NativeDevice(object):
def GetExternalStoragePath(self):
return '/tmp'
def RunShellCommand(self, cmd, check_return=False):
if check_return:
subprocess.check_call(cmd)
else:
subprocess.call(cmd)
def WriteFile(self, path, data):
with open(path, 'w') as f:
f.write(data)
def GetConfig(device):
config = DEFAULT_BENCHMARK_CONFIG
config['HOST_IP'] = GetServersHost(device)
if isinstance(device, NativeDevice):
config['RESULTS_FILE'] = '/tmp/cronet_perf_test_results.txt'
config['DONE_FILE'] = '/tmp/cronet_perf_test_done.txt'
else:
# An on-device file containing benchmark timings. Written by benchmark app.
config['RESULTS_FILE'] = '/data/data/' + APP_PACKAGE + '/results.txt'
# An on-device file whose presence indicates benchmark app has terminated.
config['DONE_FILE'] = '/data/data/' + APP_PACKAGE + '/done.txt'
return config
def GetAndroidRndisConfig(device):
return android_rndis_forwarder.AndroidRndisConfigurator(device)
def GetServersHost(device):
if isinstance(device, NativeDevice):
return '127.0.0.1'
return GetAndroidRndisConfig(device).host_ip
def GetHttpServerURL(device, resource):
return 'http://%s:%d/%s' % (GetServersHost(device), HTTP_PORT, resource)
class QuicServer(object):
def __init__(self, quic_server_doc_root):
self._process = None
self._quic_server_doc_root = quic_server_doc_root
def StartupQuicServer(self, device):
cmd = [QUIC_SERVER,
'--quic_response_cache_dir=%s' % self._quic_server_doc_root,
'--certificate_file=%s' % QUIC_CERT,
'--key_file=%s' % QUIC_KEY,
'--port=%d' % QUIC_PORT]
logging.info("Starting Quic Server: %s", cmd)
self._process = subprocess.Popen(cmd)
assert self._process != None
# Wait for quic_server to start serving.
waited_s = 0
while subprocess.call(['lsof', '-i', 'udp:%d' % QUIC_PORT, '-p',
'%d' % self._process.pid],
stdout=open(os.devnull, 'w')) != 0:
sleep(0.1)
waited_s += 0.1
assert waited_s < 5, "quic_server failed to start after %fs" % waited_s
# Push certificate to device.
cert = open(QUIC_CERT, 'r').read()
device_cert_path = posixpath.join(
device.GetExternalStoragePath(), 'chromium_tests_root', CERT_PATH)
device.RunShellCommand(['mkdir', '-p', device_cert_path], check_return=True)
device.WriteFile(os.path.join(device_cert_path, QUIC_CERT_FILENAME), cert)
def ShutdownQuicServer(self):
if self._process:
self._process.terminate()
def GenerateHttpTestResources():
http_server_doc_root = tempfile.mkdtemp()
# Create a small test file to serve.
small_file_name = os.path.join(http_server_doc_root, SMALL_RESOURCE)
small_file = open(small_file_name, 'wb')
small_file.write('<html><body></body></html>');
small_file.close()
assert SMALL_RESOURCE_SIZE == os.path.getsize(small_file_name)
# Create a large (10MB) test file to serve.
large_file_name = os.path.join(http_server_doc_root, LARGE_RESOURCE)
large_file = open(large_file_name, 'wb')
large_file.write('<html><body>');
for _ in range(0, 1000000):
large_file.write('1234567890');
large_file.write('</body></html>');
large_file.close()
assert LARGE_RESOURCE_SIZE == os.path.getsize(large_file_name)
return http_server_doc_root
def GenerateQuicTestResources(device):
quic_server_doc_root = tempfile.mkdtemp()
# Use wget to build up fake QUIC in-memory cache dir for serving.
# quic_server expects the dir/file layout that wget produces.
for resource in [SMALL_RESOURCE, LARGE_RESOURCE]:
assert subprocess.Popen(['wget', '-p', '-q', '--save-headers',
GetHttpServerURL(device, resource)],
cwd=quic_server_doc_root).wait() == 0
# wget places results in host:port directory. Adjust for QUIC port.
os.rename(os.path.join(quic_server_doc_root,
"%s:%d" % (GetServersHost(device), HTTP_PORT)),
os.path.join(quic_server_doc_root,
"%s:%d" % (QUIC_CERT_HOST, QUIC_PORT)))
return quic_server_doc_root
def GenerateLighttpdConfig(config_file, http_server_doc_root, http_server):
# Must create customized config file to allow overriding the server.bind
# setting.
config_file.write('server.document-root = "%s"\n' % http_server_doc_root)
config_file.write('server.port = %d\n' % HTTP_PORT)
# These lines are added so lighttpd_server.py's internal test succeeds.
config_file.write('server.tag = "%s"\n' % http_server.server_tag)
config_file.write('server.pid-file = "%s"\n' % http_server.pid_file)
config_file.write('dir-listing.activate = "enable"\n')
config_file.flush()