255 lines
7.9 KiB
Python
Executable File
255 lines
7.9 KiB
Python
Executable File
#!/usr/bin/env python
|
|
# Copyright (C) 2019 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.
|
|
|
|
import argparse
|
|
import logging
|
|
import os
|
|
import sys
|
|
import subprocess
|
|
import tempfile
|
|
|
|
ROOT_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
|
|
ADB_PATH = os.path.join(ROOT_DIR, 'buildtools/android_sdk/platform-tools/adb')
|
|
|
|
TEMPLATED_PERFETTO_CFG = '''
|
|
buffers {{
|
|
size_kb: 65536
|
|
fill_policy: RING_BUFFER
|
|
}}
|
|
data_sources {{
|
|
config {{
|
|
name: "linux.ftrace"
|
|
target_buffer: 0
|
|
ftrace_config {{
|
|
ftrace_events: "sched_switch"
|
|
buffer_size_kb: {buffer_size_kb}
|
|
drain_period_ms: {drain_period_ms}
|
|
}}
|
|
}}
|
|
}}
|
|
duration_ms: 15000
|
|
'''
|
|
|
|
PERFETTO_PER_CPU_BUFFER_SIZE_KB_PARAMS = [
|
|
128,
|
|
256,
|
|
512,
|
|
1 * 1024, # 1 MB
|
|
2 * 1024, # 2 MB
|
|
4 * 1024, # 4 MB
|
|
]
|
|
|
|
PERFETTO_DRAIN_RATE_MS_PARAMS = [
|
|
100,
|
|
240,
|
|
500,
|
|
1 * 1000, # 1s
|
|
2 * 1000, # 2s
|
|
5 * 1000, # 5s
|
|
]
|
|
|
|
BUSY_THREADS_NUM_THREADS_PARAMS = [
|
|
8,
|
|
32,
|
|
128,
|
|
]
|
|
|
|
BUSY_THREADS_DUTY_CYCLE_PARAMS = [
|
|
10,
|
|
100,
|
|
]
|
|
|
|
BUSY_THREADS_PERIOD_US_PARAMS = [
|
|
500,
|
|
1 * 1000, # 1 ms
|
|
10 * 1000, # 10 ms
|
|
]
|
|
|
|
TRACE_PROCESSOR_QUERY = """
|
|
SELECT
|
|
a.value as num_sched,
|
|
b.value as num_overrun
|
|
FROM (
|
|
SELECT COUNT(*) as value
|
|
FROM sched
|
|
) as a, (
|
|
SELECT SUM(value) as value
|
|
FROM stats
|
|
WHERE name = 'ftrace_cpu_overrun_end'
|
|
) as b
|
|
"""
|
|
|
|
|
|
def AdbArgs(*args):
|
|
cmd = [ADB_PATH] + list([str(x) for x in args])
|
|
logging.debug('> adb ' + ' '.join([str(x) for x in args]))
|
|
return cmd
|
|
|
|
|
|
def AdbCall(*args):
|
|
return subprocess.check_output(AdbArgs(*args)).decode('utf-8').rstrip()
|
|
|
|
|
|
def SingleTraceRun(out_dir, prio_name, buffer_size_kb, drain_rate_ms,
|
|
num_threads, duty_cycle, period_us):
|
|
busy_threads_args = AdbArgs('shell', '/data/local/tmp/busy_threads',
|
|
'--threads={}'.format(num_threads),
|
|
'--duty_cycle={}'.format(duty_cycle),
|
|
'--period_us={}'.format(period_us))
|
|
perfetto_args = AdbArgs('shell', 'perfetto', '--txt', '-c', '-', '-o', '-')
|
|
|
|
# Create a file object to read the trace into.
|
|
with tempfile.NamedTemporaryFile() as trace_file:
|
|
logging.info(
|
|
"Starting trace with parameters ({}, {}, {}, {}, {}, {})".format(
|
|
prio_name, buffer_size_kb, drain_rate_ms, num_threads, duty_cycle,
|
|
period_us))
|
|
|
|
# Start the busy threads running.
|
|
busy_threads_handle = subprocess.Popen(busy_threads_args)
|
|
|
|
# Start the Perfetto trace.
|
|
perfetto_handle = subprocess.Popen(
|
|
perfetto_args, stdin=subprocess.PIPE, stdout=trace_file)
|
|
|
|
# Create the config with the parameters
|
|
config = TEMPLATED_PERFETTO_CFG.format(
|
|
buffer_size_kb=buffer_size_kb, drain_period_ms=drain_rate_ms)
|
|
|
|
# Send the config to the Perfetto binary and wait for response.
|
|
perfetto_handle.stdin.write(config.encode())
|
|
perfetto_handle.stdin.close()
|
|
perfetto_ret = perfetto_handle.wait()
|
|
|
|
# Stop busy threads from running.
|
|
busy_threads_handle.terminate()
|
|
|
|
# Return any errors from Perfetto.
|
|
if perfetto_ret:
|
|
raise subprocess.CalledProcessError(
|
|
cmd=perfetto_args, returncode=perfetto_ret)
|
|
|
|
# TODO(lalitm): allow trace processor to take the query file from stdin
|
|
# to prevent this hack from being required.
|
|
with tempfile.NamedTemporaryFile() as trace_query_file:
|
|
trace_query_file.file.write(TRACE_PROCESSOR_QUERY.encode())
|
|
trace_query_file.file.flush()
|
|
|
|
# Run the trace processor on the config.
|
|
tp_path = os.path.join(out_dir, 'trace_processor_shell')
|
|
tp_out = subprocess.check_output(
|
|
[tp_path, '-q', trace_query_file.name, trace_file.name])
|
|
|
|
# Get the CSV output from trace processor (stripping the header).
|
|
[num_sched, num_overrun] = str(tp_out).split('\n')[1].split(',')
|
|
|
|
# Print the row to stdout.
|
|
sys.stdout.write('"{}",{},{},{},{},{},{},{}\n'.format(
|
|
prio_name, buffer_size_kb, drain_rate_ms, num_threads, duty_cycle,
|
|
period_us, num_sched, num_overrun))
|
|
|
|
|
|
def SinglePriorityRun(out_dir, prio_name):
|
|
for buffer_size_kb in PERFETTO_PER_CPU_BUFFER_SIZE_KB_PARAMS:
|
|
for drain_rate_ms in PERFETTO_DRAIN_RATE_MS_PARAMS:
|
|
for num_threads in BUSY_THREADS_NUM_THREADS_PARAMS:
|
|
for duty_cycle in BUSY_THREADS_DUTY_CYCLE_PARAMS:
|
|
for period_us in BUSY_THREADS_PERIOD_US_PARAMS:
|
|
SingleTraceRun(out_dir, prio_name, buffer_size_kb, drain_rate_ms,
|
|
num_threads, duty_cycle, period_us)
|
|
|
|
|
|
def CycleTracedAndProbes():
|
|
AdbCall('shell', 'stop', 'traced')
|
|
AdbCall('shell', 'stop', 'traced_probes')
|
|
AdbCall('shell', 'start', 'traced')
|
|
AdbCall('shell', 'start', 'traced_probes')
|
|
AdbCall('shell', 'sleep', '5')
|
|
traced_pid = AdbCall('shell', 'pidof', 'traced')
|
|
probes_pid = AdbCall('shell', 'pidof', 'traced_probes')
|
|
assert (traced_pid is not None and probes_pid is not None)
|
|
return (traced_pid, probes_pid)
|
|
|
|
|
|
def Main():
|
|
parser = argparse.ArgumentParser()
|
|
parser.add_argument('linux_out_dir', help='out/android/')
|
|
parser.add_argument('android_out_dir', help='out/android/')
|
|
args = parser.parse_args()
|
|
|
|
# Root ourselves on the device.
|
|
logging.info('Waiting for device and rooting ...')
|
|
AdbCall('wait-for-device')
|
|
AdbCall('root')
|
|
AdbCall('wait-for-device')
|
|
|
|
# Push busy threads to device
|
|
busy_threads_path = os.path.join(args.android_out_dir, 'busy_threads')
|
|
AdbCall('shell', 'rm', '-rf', '/data/local/tmp/perfetto_load_test')
|
|
AdbCall('shell', 'mkdir', '/data/local/tmp/perfetto_load_test')
|
|
AdbCall('push', busy_threads_path, '/data/local/tmp/perfetto_load_test/')
|
|
|
|
# Stop and start traced and traced_probes
|
|
(traced_pid, probes_pid) = CycleTracedAndProbes()
|
|
|
|
# Print the header for csv.
|
|
sys.stdout.write('"{}","{}","{}","{}","{}","{}","{}","{}"\n'.format(
|
|
'prio_name', 'buffer_size_kb', 'drain_rate_ms', 'num_threads',
|
|
'duty_cycle', 'period_us', 'num_sched', 'num_overrun'))
|
|
|
|
# First, do a single run in all configurations without changing prio.
|
|
SinglePriorityRun(args.linux_out_dir, 'Default')
|
|
|
|
# Stop and start traced and traced_probes
|
|
(traced_pid, probes_pid) = CycleTracedAndProbes()
|
|
|
|
# Setup the nice values and check them.
|
|
AdbCall('shell', 'renice', '-n', '-19', '-p', traced_pid)
|
|
AdbCall('shell', 'renice', '-n', '-19', '-p', probes_pid)
|
|
logging.debug(AdbCall('shell', 'cat', '/proc/{}/stat'.format(traced_pid)))
|
|
logging.debug(AdbCall('shell', 'cat', '/proc/{}/stat'.format(probes_pid)))
|
|
|
|
# Do the run.
|
|
SinglePriorityRun(args.linux_out_dir, '-19 Nice')
|
|
|
|
# Stop and start traced and traced_probes
|
|
(traced_pid, probes_pid) = CycleTracedAndProbes()
|
|
|
|
# Then do a run with FIFO scheduling for traced and traced_probes.
|
|
AdbCall('shell', 'chrt', '-f', '-p', traced_pid, '99')
|
|
AdbCall('shell', 'chrt', '-f', '-p', probes_pid, '99')
|
|
logging.debug(AdbCall('shell', 'chrt', '-p', traced_pid))
|
|
logging.debug(AdbCall('shell', 'chrt', '-p', probes_pid))
|
|
|
|
# Do the run.
|
|
SinglePriorityRun(args.linux_out_dir, 'FIFO')
|
|
|
|
# Stop and start traced and traced_probes
|
|
(traced_pid, probes_pid) = CycleTracedAndProbes()
|
|
|
|
# Cleanup any pushed files, priorities etc.
|
|
logging.info("Cleaning up test")
|
|
AdbCall('shell', 'rm', '-rf', '/data/local/tmp/perfetto_load_test')
|
|
logging.debug(AdbCall('shell', 'cat', '/proc/{}/stat'.format(traced_pid)))
|
|
logging.debug(AdbCall('shell', 'cat', '/proc/{}/stat'.format(probes_pid)))
|
|
AdbCall('unroot')
|
|
|
|
return 0
|
|
|
|
|
|
if __name__ == '__main__':
|
|
logging.basicConfig(level=logging.INFO)
|
|
sys.exit(Main())
|