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#!/usr/bin/env python
#
# Copyright (C) 2017 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 logging
from vts.runners.host import asserts
from vts.runners.host import base_test
from vts.runners.host import const
from vts.runners.host import test_runner
from vts.utils.python.controllers import android_device
from vts.utils.python.cpu import cpu_frequency_scaling
class FmqPerformanceTest(base_test.BaseTestClass):
"""A testcase for the Fast Message Queue(fmq) Performance Benchmarking.
Attributes:
dut: the target DUT (device under test) instance.
_cpu_freq: CpuFrequencyScalingController instance of self.dut.
"""
# Latency threshold for the benchmark, unit: nanoseconds.
THRESHOLD = {
32: {
"64": 300,
"128": 300,
"256": 300,
"512": 350,
},
64: {
"64": 150,
"128": 150,
"256": 150,
"512": 150,
}
}
def setUpClass(self):
self.dut = self.registerController(android_device)[0]
self.dut.shell.InvokeTerminal("one")
self._cpu_freq = cpu_frequency_scaling.CpuFrequencyScalingController(
self.dut)
self._cpu_freq.DisableCpuScaling()
def tearDownClass(self):
self._cpu_freq.EnableCpuScaling()
def setUp(self):
self._cpu_freq.SkipIfThermalThrottling(retry_delay_secs=30)
def tearDown(self):
self._cpu_freq.SkipIfThermalThrottling()
def testRunBenchmark32Bit(self):
"""A testcase which runs the 32-bit benchmark."""
self.RunBenchmark(32)
def testRunBenchmark64Bit(self):
"""A testcase which runs the 64-bit benchmark."""
self.RunBenchmark(64)
def RunBenchmark(self, bits):
"""Runs the native binary and parses its result.
Args:
bits: integer (32 or 64), the number of bits in a word chosen
at the compile time (e.g., 32- vs. 64-bit library).
"""
# Start the benchmark service.
logging.info("Start the benchmark service(%s bit mode)", bits)
binary = "/data/local/tmp/%s/mq_benchmark_service%s" % (bits, bits)
results = self.dut.shell.one.Execute([
"chmod 755 %s" % binary,
"VTS_ROOT_PATH=/data/local/tmp TREBLE_TESTING_OVERRIDE=true " \
"LD_LIBRARY_PATH=/data/local/tmp/%s:"
"$LD_LIBRARY_PATH %s&" % (bits, binary)
])
asserts.assertEqual(len(results[const.STDOUT]), 2)
asserts.assertFalse(
any(results[const.EXIT_CODE]),
"Failed to start the benchmark service.")
# Runs the benchmark.
logging.info("Start to run the benchmark (%s bit mode)", bits)
binary = "/data/local/tmp/%s/mq_benchmark_client%s" % (bits, bits)
results = self.dut.shell.one.Execute([
"chmod 755 %s" % binary,
"TREBLE_TESTING_OVERRIDE=true LD_LIBRARY_PATH=/data/local/tmp/%s:"
"$LD_LIBRARY_PATH %s" % (bits, binary)
])
# Stop the benchmark service.
self.dut.shell.one.Execute("kill -9 `pidof mq_benchmark_service%s`" %
bits)
# Parses the result.
asserts.assertEqual(len(results[const.STDOUT]), 2)
asserts.assertFalse(
any(results[const.EXIT_CODE]), "FmqPerformanceTest failed.")
read_label = []
read_latency = []
write_label = []
write_latency = []
stdout_lines = results[const.STDOUT][1].split("\n")
for line in stdout_lines:
if line.startswith("Average time to read"):
read_result = line.replace("Average time to read", "").replace(
"bytes", "").replace("ns", "")
(label, value) = read_result.split(": ")
read_label.append(label)
read_latency.append(int(value))
if line.startswith("Average time to write"):
write_result = line.replace("Average time to write ",
"").replace("bytes",
"").replace("ns", "")
(label, value) = write_result.split(": ")
write_label.append(label)
write_latency.append(int(value))
# To upload to the web DB.
self.web.AddProfilingDataLabeledVector(
"fmq_read_latency_benchmark_%sbits" % bits,
read_label,
read_latency,
x_axis_label="Message Size (Bytes)",
y_axis_label="Average Latency (nanoseconds)")
self.web.AddProfilingDataLabeledVector(
"fmq_write_latency_benchmark_%sbits" % bits,
write_label,
write_latency,
x_axis_label="Message Size (Bytes)",
y_axis_label="Average Latency (nanoseconds)")
# Assertions to check the performance requirements
for label, value in zip(read_label, read_latency):
if label in self.THRESHOLD[bits]:
asserts.assertLess(
value, self.THRESHOLD[bits][label],
"%s ns for %s is longer than the threshold %s ns" % (
value, label, self.THRESHOLD[bits][label]))
for label, value in zip(write_label, write_latency):
if label in self.THRESHOLD[bits]:
asserts.assertLess(
value, self.THRESHOLD[bits][label],
"%s ns for %s is longer than the threshold %s ns" % (
value, label, self.THRESHOLD[bits][label]))
if __name__ == "__main__":
test_runner.main()
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