120 lines
3.4 KiB
Python
Executable file
120 lines
3.4 KiB
Python
Executable file
#!/usr/bin/env python3
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#
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# Copyright (C) 2018 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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import os
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import statistics
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import time
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import adb
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def lock_min(device):
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device.shell_nocheck(["""
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for x in /sys/devices/system/cpu/cpu?/cpufreq; do
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echo userspace > $x/scaling_governor
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cat $x/scaling_min_freq > $x/scaling_setspeed
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done
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"""])
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def lock_max(device):
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device.shell_nocheck(["""
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for x in /sys/devices/system/cpu/cpu?/cpufreq; do
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echo userspace > $x/scaling_governor
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cat $x/scaling_max_freq > $x/scaling_setspeed
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done
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"""])
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def unlock(device):
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device.shell_nocheck(["""
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for x in /sys/devices/system/cpu/cpu?/cpufreq; do
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echo ondemand > $x/scaling_governor
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echo sched > $x/scaling_governor
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echo schedutil > $x/scaling_governor
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done
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"""])
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def harmonic_mean(xs):
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return 1.0 / statistics.mean([1.0 / x for x in xs])
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def analyze(name, speeds):
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median = statistics.median(speeds)
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mean = harmonic_mean(speeds)
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stddev = statistics.stdev(speeds)
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msg = "%s: %d runs: median %.2f MiB/s, mean %.2f MiB/s, stddev: %.2f MiB/s"
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print(msg % (name, len(speeds), median, mean, stddev))
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def benchmark_push(device=None, file_size_mb=100):
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if device == None:
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device = adb.get_device()
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lock_max(device)
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remote_path = "/dev/null"
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local_path = "/tmp/adb_benchmark_temp"
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with open(local_path, "wb") as f:
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f.truncate(file_size_mb * 1024 * 1024)
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speeds = list()
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for _ in range(0, 5):
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begin = time.time()
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device.push(local=local_path, remote=remote_path)
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end = time.time()
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speeds.append(file_size_mb / float(end - begin))
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analyze("push %dMiB" % file_size_mb, speeds)
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def benchmark_pull(device=None, file_size_mb=100):
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if device == None:
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device = adb.get_device()
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lock_max(device)
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remote_path = "/data/local/tmp/adb_benchmark_temp"
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local_path = "/tmp/adb_benchmark_temp"
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device.shell(["dd", "if=/dev/zero", "of=" + remote_path, "bs=1m",
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"count=" + str(file_size_mb)])
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speeds = list()
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for _ in range(0, 5):
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begin = time.time()
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device.pull(remote=remote_path, local=local_path)
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end = time.time()
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speeds.append(file_size_mb / float(end - begin))
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analyze("pull %dMiB" % file_size_mb, speeds)
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def benchmark_shell(device=None, file_size_mb=100):
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if device == None:
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device = adb.get_device()
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lock_max(device)
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speeds = list()
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for _ in range(0, 5):
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begin = time.time()
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device.shell(["dd", "if=/dev/zero", "bs=1m",
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"count=" + str(file_size_mb)])
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end = time.time()
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speeds.append(file_size_mb / float(end - begin))
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analyze("shell %dMiB" % file_size_mb, speeds)
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def main():
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benchmark_pull()
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if __name__ == "__main__":
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main()
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