463 lines
16 KiB
Python
Executable File
463 lines
16 KiB
Python
Executable File
#!/usr/bin/env python
|
|
# Copyright (C) 2015 The Android Open Source Project
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
"""Record the event logs during boot and output them to a file.
|
|
|
|
This script repeats the record of each event log during Android boot specified
|
|
times. By default, interval between measurements is adjusted in such a way that
|
|
CPUs are cooled down sufficiently to avoid boot time slowdown caused by CPU
|
|
thermal throttling. The result is output in a tab-separated value format.
|
|
|
|
Examples:
|
|
|
|
Repeat measurements 10 times. Interval between iterations is adjusted based on
|
|
CPU temperature of the device.
|
|
|
|
$ ./perfboot.py --iterations=10
|
|
|
|
Repeat measurements 20 times. 60 seconds interval is taken between each
|
|
iteration.
|
|
|
|
$ ./perfboot.py --iterations=20 --interval=60
|
|
|
|
Repeat measurements 20 times, show verbose output, output the result to
|
|
data.tsv, and read event tags from eventtags.txt.
|
|
|
|
$ ./perfboot.py --iterations=30 -v --output=data.tsv --tags=eventtags.txt
|
|
"""
|
|
|
|
import argparse
|
|
import atexit
|
|
import cStringIO
|
|
import glob
|
|
import inspect
|
|
import logging
|
|
import math
|
|
import os
|
|
import re
|
|
import subprocess
|
|
import sys
|
|
import threading
|
|
import time
|
|
|
|
sys.path.append(os.path.dirname(os.path.dirname(__file__)))
|
|
import adb
|
|
|
|
# The default event tags to record.
|
|
_DEFAULT_EVENT_TAGS = [
|
|
'boot_progress_start',
|
|
'boot_progress_preload_start',
|
|
'boot_progress_preload_end',
|
|
'boot_progress_system_run',
|
|
'boot_progress_pms_start',
|
|
'boot_progress_pms_system_scan_start',
|
|
'boot_progress_pms_data_scan_start',
|
|
'boot_progress_pms_scan_end',
|
|
'boot_progress_pms_ready',
|
|
'boot_progress_ams_ready',
|
|
'boot_progress_enable_screen',
|
|
'sf_stop_bootanim',
|
|
'wm_boot_animation_done',
|
|
]
|
|
|
|
|
|
class IntervalAdjuster(object):
|
|
"""A helper class to take suffficient interval between iterations."""
|
|
|
|
# CPU temperature values per product used to decide interval
|
|
_CPU_COOL_DOWN_THRESHOLDS = {
|
|
'flo': 40,
|
|
'flounder': 40000,
|
|
'razor': 40,
|
|
'volantis': 40000,
|
|
}
|
|
# The interval between CPU temperature checks
|
|
_CPU_COOL_DOWN_WAIT_INTERVAL = 10
|
|
# The wait time used when the value of _CPU_COOL_DOWN_THRESHOLDS for
|
|
# the product is not defined.
|
|
_CPU_COOL_DOWN_WAIT_TIME_DEFAULT = 120
|
|
|
|
def __init__(self, interval, device):
|
|
self._interval = interval
|
|
self._device = device
|
|
self._temp_paths = device.shell(
|
|
['ls', '/sys/class/thermal/thermal_zone*/temp'])[0].splitlines()
|
|
self._product = device.get_prop('ro.build.product')
|
|
self._waited = False
|
|
|
|
def wait(self):
|
|
"""Waits certain amount of time for CPUs cool-down."""
|
|
if self._interval is None:
|
|
self._wait_cpu_cool_down(self._product, self._temp_paths)
|
|
else:
|
|
if self._waited:
|
|
print 'Waiting for %d seconds' % self._interval
|
|
time.sleep(self._interval)
|
|
self._waited = True
|
|
|
|
def _get_cpu_temp(self, threshold):
|
|
max_temp = 0
|
|
for temp_path in self._temp_paths:
|
|
temp = int(self._device.shell(['cat', temp_path])[0].rstrip())
|
|
max_temp = max(max_temp, temp)
|
|
if temp >= threshold:
|
|
return temp
|
|
return max_temp
|
|
|
|
def _wait_cpu_cool_down(self, product, temp_paths):
|
|
threshold = IntervalAdjuster._CPU_COOL_DOWN_THRESHOLDS.get(
|
|
self._product)
|
|
if threshold is None:
|
|
print 'No CPU temperature threshold is set for ' + self._product
|
|
print ('Just wait %d seconds' %
|
|
IntervalAdjuster._CPU_COOL_DOWN_WAIT_TIME_DEFAULT)
|
|
time.sleep(IntervalAdjuster._CPU_COOL_DOWN_WAIT_TIME_DEFAULT)
|
|
return
|
|
while True:
|
|
temp = self._get_cpu_temp(threshold)
|
|
if temp < threshold:
|
|
logging.info('Current CPU temperature %s' % temp)
|
|
return
|
|
print 'Waiting until CPU temperature (%d) falls below %d' % (
|
|
temp, threshold)
|
|
time.sleep(IntervalAdjuster._CPU_COOL_DOWN_WAIT_INTERVAL)
|
|
|
|
|
|
class WatchdogTimer(object):
|
|
"""A timer that makes is_timedout() return true in |timeout| seconds."""
|
|
def __init__(self, timeout):
|
|
self._timedout = False
|
|
|
|
def notify_timeout():
|
|
self._timedout = True
|
|
self._timer = threading.Timer(timeout, notify_timeout)
|
|
self._timer.daemon = True
|
|
self._timer.start()
|
|
|
|
def is_timedout(self):
|
|
return self._timedout
|
|
|
|
def cancel(self):
|
|
self._timer.cancel()
|
|
|
|
|
|
def readlines_unbuffered(proc):
|
|
"""Read lines from |proc|'s standard out without buffering."""
|
|
while True:
|
|
buf = []
|
|
c = proc.stdout.read(1)
|
|
if c == '' and proc.poll() is not None:
|
|
break
|
|
while c != '\n':
|
|
if c == '' and proc.poll() is not None:
|
|
break
|
|
buf.append(c)
|
|
c = proc.stdout.read(1)
|
|
yield ''.join(buf)
|
|
|
|
|
|
def disable_dropbox(device):
|
|
"""Removes the files created by Dropbox and avoids creating the files."""
|
|
device.root()
|
|
device.wait()
|
|
device.shell(['rm', '-rf', '/system/data/dropbox'])
|
|
original_dropbox_max_files = device.shell(
|
|
['settings', 'get', 'global', 'dropbox_max_files'])[0].rstrip()
|
|
device.shell(['settings', 'put', 'global', 'dropbox_max_files', '0'])
|
|
return original_dropbox_max_files
|
|
|
|
|
|
def restore_dropbox(device, original_dropbox_max_files):
|
|
"""Restores the dropbox_max_files setting."""
|
|
device.root()
|
|
device.wait()
|
|
if original_dropbox_max_files == 'null':
|
|
device.shell(['settings', 'delete', 'global', 'dropbox_max_files'])
|
|
else:
|
|
device.shell(['settings', 'put', 'global', 'dropbox_max_files',
|
|
original_dropbox_max_files])
|
|
|
|
|
|
def init_perf(device, output, record_list, tags):
|
|
device.wait()
|
|
debuggable = device.get_prop('ro.debuggable')
|
|
original_dropbox_max_files = None
|
|
if debuggable == '1':
|
|
# Workaround for Dropbox issue (http://b/20890386).
|
|
original_dropbox_max_files = disable_dropbox(device)
|
|
|
|
def cleanup():
|
|
try:
|
|
if record_list:
|
|
print_summary(record_list, tags[-1])
|
|
output_results(output, record_list, tags)
|
|
if original_dropbox_max_files is not None:
|
|
restore_dropbox(device, original_dropbox_max_files)
|
|
except (subprocess.CalledProcessError, RuntimeError):
|
|
pass
|
|
atexit.register(cleanup)
|
|
|
|
|
|
def check_dm_verity_settings(device):
|
|
device.wait()
|
|
for partition in ['system', 'vendor']:
|
|
verity_mode = device.get_prop('partition.%s.verified' % partition)
|
|
if verity_mode is None:
|
|
logging.warning('dm-verity is not enabled for /%s. Did you run '
|
|
'adb disable-verity? That may skew the result.',
|
|
partition)
|
|
|
|
|
|
def read_event_tags(tags_file):
|
|
"""Reads event tags from |tags_file|."""
|
|
if not tags_file:
|
|
return _DEFAULT_EVENT_TAGS
|
|
tags = []
|
|
with open(tags_file) as f:
|
|
for line in f:
|
|
if '#' in line:
|
|
line = line[:line.find('#')]
|
|
line = line.strip()
|
|
if line:
|
|
tags.append(line)
|
|
return tags
|
|
|
|
|
|
def make_event_tags_re(tags):
|
|
"""Makes a regular expression object that matches event logs of |tags|."""
|
|
return re.compile(r'(?P<pid>[0-9]+) +[0-9]+ I (?P<tag>%s): (?P<time>\d+)' %
|
|
'|'.join(tags))
|
|
|
|
|
|
def filter_event_tags(tags, device):
|
|
"""Drop unknown tags not listed in device's event-log-tags file."""
|
|
device.wait()
|
|
supported_tags = set()
|
|
for l in device.shell(
|
|
['cat', '/system/etc/event-log-tags'])[0].splitlines():
|
|
tokens = l.split(' ')
|
|
if len(tokens) >= 2:
|
|
supported_tags.add(tokens[1])
|
|
filtered = []
|
|
for tag in tags:
|
|
if tag in supported_tags:
|
|
filtered.append(tag)
|
|
else:
|
|
logging.warning('Unknown tag \'%s\'. Ignoring...', tag)
|
|
return filtered
|
|
|
|
|
|
def get_values(record, tag):
|
|
"""Gets values that matches |tag| from |record|."""
|
|
keys = [key for key in record.keys() if key[0] == tag]
|
|
return [record[k] for k in sorted(keys)]
|
|
|
|
|
|
def get_last_value(record, tag):
|
|
"""Gets the last value that matches |tag| from |record|."""
|
|
values = get_values(record, tag)
|
|
if not values:
|
|
return 0
|
|
return values[-1]
|
|
|
|
|
|
def output_results(filename, record_list, tags):
|
|
"""Outputs |record_list| into |filename| in a TSV format."""
|
|
# First, count the number of the values of each tag.
|
|
# This is for dealing with events that occur multiple times.
|
|
# For instance, boot_progress_preload_start and boot_progress_preload_end
|
|
# are recorded twice on 64-bit system. One is for 64-bit zygote process
|
|
# and the other is for 32-bit zygote process.
|
|
values_counter = {}
|
|
for record in record_list:
|
|
for tag in tags:
|
|
# Some record might lack values for some tags due to unanticipated
|
|
# problems (e.g. timeout), so take the maximum count among all the
|
|
# record.
|
|
values_counter[tag] = max(values_counter.get(tag, 1),
|
|
len(get_values(record, tag)))
|
|
|
|
# Then creates labels for the data. If there are multiple values for one
|
|
# tag, labels for these values are numbered except the first one as
|
|
# follows:
|
|
#
|
|
# event_tag event_tag2 event_tag3
|
|
#
|
|
# The corresponding values are sorted in an ascending order of PID.
|
|
labels = []
|
|
for tag in tags:
|
|
for i in range(1, values_counter[tag] + 1):
|
|
labels.append('%s%s' % (tag, '' if i == 1 else str(i)))
|
|
|
|
# Finally write the data into the file.
|
|
with open(filename, 'w') as f:
|
|
f.write('\t'.join(labels) + '\n')
|
|
for record in record_list:
|
|
line = cStringIO.StringIO()
|
|
invalid_line = False
|
|
for i, tag in enumerate(tags):
|
|
if i != 0:
|
|
line.write('\t')
|
|
values = get_values(record, tag)
|
|
if len(values) < values_counter[tag]:
|
|
invalid_line = True
|
|
# Fill invalid record with 0
|
|
values += [0] * (values_counter[tag] - len(values))
|
|
line.write('\t'.join(str(t) for t in values))
|
|
if invalid_line:
|
|
logging.error('Invalid record found: ' + line.getvalue())
|
|
line.write('\n')
|
|
f.write(line.getvalue())
|
|
print 'Wrote: ' + filename
|
|
|
|
|
|
def median(data):
|
|
"""Calculates the median value from |data|."""
|
|
data = sorted(data)
|
|
n = len(data)
|
|
if n % 2 == 1:
|
|
return data[n / 2]
|
|
else:
|
|
n2 = n / 2
|
|
return (data[n2 - 1] + data[n2]) / 2.0
|
|
|
|
|
|
def mean(data):
|
|
"""Calculates the mean value from |data|."""
|
|
return float(sum(data)) / len(data)
|
|
|
|
|
|
def stddev(data):
|
|
"""Calculates the standard deviation value from |value|."""
|
|
m = mean(data)
|
|
return math.sqrt(sum((x - m) ** 2 for x in data) / len(data))
|
|
|
|
|
|
def print_summary(record_list, end_tag):
|
|
"""Prints the summary of |record_list|."""
|
|
# Filter out invalid data.
|
|
end_times = [get_last_value(record, end_tag) for record in record_list
|
|
if get_last_value(record, end_tag) != 0]
|
|
print 'mean: ', mean(end_times)
|
|
print 'median:', median(end_times)
|
|
print 'standard deviation:', stddev(end_times)
|
|
|
|
|
|
def do_iteration(device, interval_adjuster, event_tags_re, end_tag):
|
|
"""Measures the boot time once."""
|
|
device.wait()
|
|
interval_adjuster.wait()
|
|
device.reboot()
|
|
print 'Rebooted the device'
|
|
record = {}
|
|
booted = False
|
|
while not booted:
|
|
device.wait()
|
|
# Stop the iteration if it does not finish within 120 seconds.
|
|
timeout = 120
|
|
t = WatchdogTimer(timeout)
|
|
p = subprocess.Popen(
|
|
['adb', 'logcat', '-b', 'events', '-v', 'threadtime'],
|
|
stdout=subprocess.PIPE)
|
|
for line in readlines_unbuffered(p):
|
|
if t.is_timedout():
|
|
print '*** Timed out ***'
|
|
return record
|
|
m = event_tags_re.search(line)
|
|
if not m:
|
|
continue
|
|
tag = m.group('tag')
|
|
event_time = int(m.group('time'))
|
|
pid = m.group('pid')
|
|
record[(tag, pid)] = event_time
|
|
print 'Event log recorded: %s (%s) - %d ms' % (
|
|
tag, pid, event_time)
|
|
if tag == end_tag:
|
|
booted = True
|
|
t.cancel()
|
|
break
|
|
return record
|
|
|
|
|
|
def parse_args():
|
|
"""Parses the command line arguments."""
|
|
parser = argparse.ArgumentParser(
|
|
description=inspect.getdoc(sys.modules[__name__]),
|
|
formatter_class=argparse.RawDescriptionHelpFormatter)
|
|
parser.add_argument('--iterations', type=int, default=5,
|
|
help='Number of times to repeat boot measurements.')
|
|
parser.add_argument('--interval', type=int,
|
|
help=('Duration between iterations. If this is not '
|
|
'set explicitly, durations are determined '
|
|
'adaptively based on CPUs temperature.'))
|
|
parser.add_argument('-o', '--output', help='File name of output data.')
|
|
parser.add_argument('-v', '--verbose', action='store_true',
|
|
help='Show verbose output.')
|
|
parser.add_argument('-s', '--serial', default=os.getenv('ANDROID_SERIAL'),
|
|
help='Adb device serial number.')
|
|
parser.add_argument('-t', '--tags', help='Specify the filename from which '
|
|
'event tags are read. Every line contains one event '
|
|
'tag and the last event tag is used to detect that '
|
|
'the device has finished booting unless --end-tag is '
|
|
'specified.')
|
|
parser.add_argument('--end-tag', help='An event tag on which the script '
|
|
'stops measuring the boot time.')
|
|
parser.add_argument('--apk-dir', help='Specify the directory which contains '
|
|
'APK files to be installed before measuring boot time.')
|
|
return parser.parse_args()
|
|
|
|
|
|
def install_apks(device, apk_dir):
|
|
for apk in glob.glob(os.path.join(apk_dir, '*.apk')):
|
|
print 'Installing: ' + apk
|
|
device.install(apk, replace=True)
|
|
|
|
|
|
def main():
|
|
args = parse_args()
|
|
if args.verbose:
|
|
logging.getLogger().setLevel(logging.INFO)
|
|
|
|
device = adb.get_device(args.serial)
|
|
|
|
if not args.output:
|
|
device.wait()
|
|
args.output = 'perf-%s-%s.tsv' % (
|
|
device.get_prop('ro.build.flavor'),
|
|
device.get_prop('ro.build.version.incremental'))
|
|
check_dm_verity_settings(device)
|
|
|
|
if args.apk_dir:
|
|
install_apks(device, args.apk_dir)
|
|
|
|
record_list = []
|
|
event_tags = filter_event_tags(read_event_tags(args.tags), device)
|
|
end_tag = args.end_tag or event_tags[-1]
|
|
if end_tag not in event_tags:
|
|
sys.exit('%s is not a valid tag.' % end_tag)
|
|
event_tags = event_tags[0 : event_tags.index(end_tag) + 1]
|
|
init_perf(device, args.output, record_list, event_tags)
|
|
interval_adjuster = IntervalAdjuster(args.interval, device)
|
|
event_tags_re = make_event_tags_re(event_tags)
|
|
|
|
for i in range(args.iterations):
|
|
print 'Run #%d ' % i
|
|
record = do_iteration(
|
|
device, interval_adjuster, event_tags_re, end_tag)
|
|
record_list.append(record)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
main()
|