#!/usr/bin/env python
# Copyright 2014 the V8 project authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""
Performance runner for d8.
Call e.g. with tools/run-perf.py --arch ia32 some_suite.json
The suite json format is expected to be:
{
"path": <relative path chunks to perf resources and main file>,
"name": <optional suite name, file name is default>,
"archs": [<architecture name for which this suite is run>, ...],
"binary": <name of binary to run, default "d8">,
"flags": [<flag to d8>, ...],
"test_flags": [<flag to the test file>, ...],
"run_count": <how often will this suite run (optional)>,
"run_count_XXX": <how often will this suite run for arch XXX (optional)>,
"resources": [<js file to be moved to android device>, ...]
"main": <main js perf runner file>,
"results_regexp": <optional regexp>,
"results_processor": <optional python results processor script>,
"units": <the unit specification for the performance dashboard>,
"tests": [
{
"name": <name of the trace>,
"results_regexp": <optional more specific regexp>,
"results_processor": <optional python results processor script>,
"units": <the unit specification for the performance dashboard>,
}, ...
]
}
The tests field can also nest other suites in arbitrary depth. A suite
with a "main" file is a leaf suite that can contain one more level of
tests.
A suite's results_regexp is expected to have one string place holder
"%s" for the trace name. A trace's results_regexp overwrites suite
defaults.
A suite's results_processor may point to an optional python script. If
specified, it is called after running the tests like this (with a path
relatve to the suite level's path):
<results_processor file> <same flags as for d8> <suite level name> <output>
The <output> is a temporary file containing d8 output. The results_regexp will
be applied to the output of this script.
A suite without "tests" is considered a performance test itself.
Full example (suite with one runner):
{
"path": ["."],
"flags": ["--expose-gc"],
"test_flags": ["5"],
"archs": ["ia32", "x64"],
"run_count": 5,
"run_count_ia32": 3,
"main": "run.js",
"results_regexp": "^%s: (.+)$",
"units": "score",
"tests": [
{"name": "Richards"},
{"name": "DeltaBlue"},
{"name": "NavierStokes",
"results_regexp": "^NavierStokes: (.+)$"}
]
}
Full example (suite with several runners):
{
"path": ["."],
"flags": ["--expose-gc"],
"archs": ["ia32", "x64"],
"run_count": 5,
"units": "score",
"tests": [
{"name": "Richards",
"path": ["richards"],
"main": "run.js",
"run_count": 3,
"results_regexp": "^Richards: (.+)$"},
{"name": "NavierStokes",
"path": ["navier_stokes"],
"main": "run.js",
"results_regexp": "^NavierStokes: (.+)$"}
]
}
Path pieces are concatenated. D8 is always run with the suite's path as cwd.
The test flags are passed to the js test file after '--'.
"""
from collections import OrderedDict
import json
import logging
import math
import optparse
import os
import re
import subprocess
import sys
from testrunner.local import commands
from testrunner.local import utils
ARCH_GUESS = utils.DefaultArch()
SUPPORTED_ARCHS = ["arm",
"ia32",
"mips",
"mipsel",
"nacl_ia32",
"nacl_x64",
"x64",
"arm64"]
GENERIC_RESULTS_RE = re.compile(r"^RESULT ([^:]+): ([^=]+)= ([^ ]+) ([^ ]*)$")
RESULT_STDDEV_RE = re.compile(r"^\{([^\}]+)\}$")
RESULT_LIST_RE = re.compile(r"^\[([^\]]+)\]$")
TOOLS_BASE = os.path.abspath(os.path.dirname(__file__))
def LoadAndroidBuildTools(path): # pragma: no cover
assert os.path.exists(path)
sys.path.insert(0, path)
from pylib.device import adb_wrapper # pylint: disable=F0401
from pylib.device import device_errors # pylint: disable=F0401
from pylib.device import device_utils # pylint: disable=F0401
from pylib.perf import cache_control # pylint: disable=F0401
from pylib.perf import perf_control # pylint: disable=F0401
global adb_wrapper
global cache_control
global device_errors
global device_utils
global perf_control
def GeometricMean(values):
"""Returns the geometric mean of a list of values.
The mean is calculated using log to avoid overflow.
"""
values = map(float, values)
return str(math.exp(sum(map(math.log, values)) / len(values)))
class Results(object):
"""Place holder for result traces."""
def __init__(self, traces=None, errors=None):
self.traces = traces or []
self.errors = errors or []
def ToDict(self):
return {"traces": self.traces, "errors": self.errors}
def WriteToFile(self, file_name):
with open(file_name, "w") as f:
f.write(json.dumps(self.ToDict()))
def __add__(self, other):
self.traces += other.traces
self.errors += other.errors
return self
def __str__(self): # pragma: no cover
return str(self.ToDict())
class Measurement(object):
"""Represents a series of results of one trace.
The results are from repetitive runs of the same executable. They are
gathered by repeated calls to ConsumeOutput.
"""
def __init__(self, graphs, units, results_regexp, stddev_regexp):
self.name = graphs[-1]
self.graphs = graphs
self.units = units
self.results_regexp = results_regexp
self.stddev_regexp = stddev_regexp
self.results = []
self.errors = []
self.stddev = ""
def ConsumeOutput(self, stdout):
try:
result = re.search(self.results_regexp, stdout, re.M).group(1)
self.results.append(str(float(result)))
except ValueError:
self.errors.append("Regexp \"%s\" returned a non-numeric for test %s."
% (self.results_regexp, self.name))
except:
self.errors.append("Regexp \"%s\" didn't match for test %s."
% (self.results_regexp, self.name))
try:
if self.stddev_regexp and self.stddev:
self.errors.append("Test %s should only run once since a stddev "
"is provided by the test." % self.name)
if self.stddev_regexp:
self.stddev = re.search(self.stddev_regexp, stdout, re.M).group(1)
except:
self.errors.append("Regexp \"%s\" didn't match for test %s."
% (self.stddev_regexp, self.name))
def GetResults(self):
return Results([{
"graphs": self.graphs,
"units": self.units,
"results": self.results,
"stddev": self.stddev,
}], self.errors)
class NullMeasurement(object):
"""Null object to avoid having extra logic for configurations that didn't
run like running without patch on trybots.
"""
def ConsumeOutput(self, stdout):
pass
def GetResults(self):
return Results()
def Unzip(iterable):
left = []
right = []
for l, r in iterable:
left.append(l)
right.append(r)
return lambda: iter(left), lambda: iter(right)
def AccumulateResults(
graph_names, trace_configs, iter_output, trybot, no_patch, calc_total):
"""Iterates over the output of multiple benchmark reruns and accumulates
results for a configured list of traces.
Args:
graph_names: List of names that configure the base path of the traces. E.g.
['v8', 'Octane'].
trace_configs: List of "TraceConfig" instances. Each trace config defines
how to perform a measurement.
iter_output: Iterator over the standard output of each test run.
trybot: Indicates that this is run in trybot mode, i.e. run twice, once
with once without patch.
no_patch: Indicates weather this is a trybot run without patch.
calc_total: Boolean flag to speficy the calculation of a summary trace.
Returns: A "Results" object.
"""
measurements = [
trace.CreateMeasurement(trybot, no_patch) for trace in trace_configs]
for stdout in iter_output():
for measurement in measurements:
measurement.ConsumeOutput(stdout)
res = reduce(lambda r, m: r + m.GetResults(), measurements, Results())
if not res.traces or not calc_total:
return res
# Assume all traces have the same structure.
if len(set(map(lambda t: len(t["results"]), res.traces))) != 1:
res.errors.append("Not all traces have the same number of results.")
return res
# Calculate the geometric means for all traces. Above we made sure that
# there is at least one trace and that the number of results is the same
# for each trace.
n_results = len(res.traces[0]["results"])
total_results = [GeometricMean(t["results"][i] for t in res.traces)
for i in range(0, n_results)]
res.traces.append({
"graphs": graph_names + ["Total"],
"units": res.traces[0]["units"],
"results": total_results,
"stddev": "",
})
return res
def AccumulateGenericResults(graph_names, suite_units, iter_output):
"""Iterates over the output of multiple benchmark reruns and accumulates
generic results.
Args:
graph_names: List of names that configure the base path of the traces. E.g.
['v8', 'Octane'].
suite_units: Measurement default units as defined by the benchmark suite.
iter_output: Iterator over the standard output of each test run.
Returns: A "Results" object.
"""
traces = OrderedDict()
for stdout in iter_output():
if stdout is None:
# The None value is used as a null object to simplify logic.
continue
for line in stdout.strip().splitlines():
match = GENERIC_RESULTS_RE.match(line)
if match:
stddev = ""
graph = match.group(1)
trace = match.group(2)
body = match.group(3)
units = match.group(4)
match_stddev = RESULT_STDDEV_RE.match(body)
match_list = RESULT_LIST_RE.match(body)
errors = []
if match_stddev:
result, stddev = map(str.strip, match_stddev.group(1).split(","))
results = [result]
elif match_list:
results = map(str.strip, match_list.group(1).split(","))
else:
results = [body.strip()]
try:
results = map(lambda r: str(float(r)), results)
except ValueError:
results = []
errors = ["Found non-numeric in %s" %
"/".join(graph_names + [graph, trace])]
trace_result = traces.setdefault(trace, Results([{
"graphs": graph_names + [graph, trace],
"units": (units or suite_units).strip(),
"results": [],
"stddev": "",
}], errors))
trace_result.traces[0]["results"].extend(results)
trace_result.traces[0]["stddev"] = stddev
return reduce(lambda r, t: r + t, traces.itervalues(), Results())
class Node(object):
"""Represents a node in the suite tree structure."""
def __init__(self, *args):
self._children = []
def AppendChild(self, child):
self._children.append(child)
class DefaultSentinel(Node):
"""Fake parent node with all default values."""
def __init__(self, binary = "d8"):
super(DefaultSentinel, self).__init__()
self.binary = binary
self.run_count = 10
self.timeout = 60
self.path = []
self.graphs = []
self.flags = []
self.test_flags = []
self.resources = []
self.results_regexp = None
self.stddev_regexp = None
self.units = "score"
self.total = False
class GraphConfig(Node):
"""Represents a suite definition.
Can either be a leaf or an inner node that provides default values.
"""
def __init__(self, suite, parent, arch):
super(GraphConfig, self).__init__()
self._suite = suite
assert isinstance(suite.get("path", []), list)
assert isinstance(suite["name"], basestring)
assert isinstance(suite.get("flags", []), list)
assert isinstance(suite.get("test_flags", []), list)
assert isinstance(suite.get("resources", []), list)
# Accumulated values.
self.path = parent.path[:] + suite.get("path", [])
self.graphs = parent.graphs[:] + [suite["name"]]
self.flags = parent.flags[:] + suite.get("flags", [])
self.test_flags = parent.test_flags[:] + suite.get("test_flags", [])
# Values independent of parent node.
self.resources = suite.get("resources", [])
# Descrete values (with parent defaults).
self.binary = suite.get("binary", parent.binary)
self.run_count = suite.get("run_count", parent.run_count)
self.run_count = suite.get("run_count_%s" % arch, self.run_count)
self.timeout = suite.get("timeout", parent.timeout)
self.timeout = suite.get("timeout_%s" % arch, self.timeout)
self.units = suite.get("units", parent.units)
self.total = suite.get("total", parent.total)
# A regular expression for results. If the parent graph provides a
# regexp and the current suite has none, a string place holder for the
# suite name is expected.
# TODO(machenbach): Currently that makes only sense for the leaf level.
# Multiple place holders for multiple levels are not supported.
if parent.results_regexp:
regexp_default = parent.results_regexp % re.escape(suite["name"])
else:
regexp_default = None
self.results_regexp = suite.get("results_regexp", regexp_default)
# A similar regular expression for the standard deviation (optional).
if parent.stddev_regexp:
stddev_default = parent.stddev_regexp % re.escape(suite["name"])
else:
stddev_default = None
self.stddev_regexp = suite.get("stddev_regexp", stddev_default)
class TraceConfig(GraphConfig):
"""Represents a leaf in the suite tree structure."""
def __init__(self, suite, parent, arch):
super(TraceConfig, self).__init__(suite, parent, arch)
assert self.results_regexp
def CreateMeasurement(self, trybot, no_patch):
if not trybot and no_patch:
# Use null object for no-patch logic if this is not a trybot run.
return NullMeasurement()
return Measurement(
self.graphs,
self.units,
self.results_regexp,
self.stddev_regexp,
)
class RunnableConfig(GraphConfig):
"""Represents a runnable suite definition (i.e. has a main file).
"""
@property
def main(self):
return self._suite.get("main", "")
def ChangeCWD(self, suite_path):
"""Changes the cwd to to path defined in the current graph.
The tests are supposed to be relative to the suite configuration.
"""
suite_dir = os.path.abspath(os.path.dirname(suite_path))
bench_dir = os.path.normpath(os.path.join(*self.path))
os.chdir(os.path.join(suite_dir, bench_dir))
def GetCommandFlags(self, extra_flags=None):
suffix = ["--"] + self.test_flags if self.test_flags else []
return self.flags + (extra_flags or []) + [self.main] + suffix
def GetCommand(self, shell_dir, extra_flags=None):
# TODO(machenbach): This requires +.exe if run on windows.
extra_flags = extra_flags or []
cmd = [os.path.join(shell_dir, self.binary)]
if self.binary != 'd8' and '--prof' in extra_flags:
print "Profiler supported only on a benchmark run with d8"
return cmd + self.GetCommandFlags(extra_flags=extra_flags)
def Run(self, runner, trybot):
"""Iterates over several runs and handles the output for all traces."""
stdout_with_patch, stdout_no_patch = Unzip(runner())
return (
AccumulateResults(
self.graphs,
self._children,
iter_output=stdout_with_patch,
trybot=trybot,
no_patch=False,
calc_total=self.total,
),
AccumulateResults(
self.graphs,
self._children,
iter_output=stdout_no_patch,
trybot=trybot,
no_patch=True,
calc_total=self.total,
),
)
class RunnableTraceConfig(TraceConfig, RunnableConfig):
"""Represents a runnable suite definition that is a leaf."""
def __init__(self, suite, parent, arch):
super(RunnableTraceConfig, self).__init__(suite, parent, arch)
def Run(self, runner, trybot):
"""Iterates over several runs and handles the output."""
measurement_with_patch = self.CreateMeasurement(trybot, False)
measurement_no_patch = self.CreateMeasurement(trybot, True)
for stdout_with_patch, stdout_no_patch in runner():
measurement_with_patch.ConsumeOutput(stdout_with_patch)
measurement_no_patch.ConsumeOutput(stdout_no_patch)
return (
measurement_with_patch.GetResults(),
measurement_no_patch.GetResults(),
)
class RunnableGenericConfig(RunnableConfig):
"""Represents a runnable suite definition with generic traces."""
def __init__(self, suite, parent, arch):
super(RunnableGenericConfig, self).__init__(suite, parent, arch)
def Run(self, runner, trybot):
stdout_with_patch, stdout_no_patch = Unzip(runner())
return (
AccumulateGenericResults(self.graphs, self.units, stdout_with_patch),
AccumulateGenericResults(self.graphs, self.units, stdout_no_patch),
)
def MakeGraphConfig(suite, arch, parent):
"""Factory method for making graph configuration objects."""
if isinstance(parent, RunnableConfig):
# Below a runnable can only be traces.
return TraceConfig(suite, parent, arch)
elif suite.get("main") is not None:
# A main file makes this graph runnable. Empty strings are accepted.
if suite.get("tests"):
# This graph has subgraphs (traces).
return RunnableConfig(suite, parent, arch)
else:
# This graph has no subgraphs, it's a leaf.
return RunnableTraceConfig(suite, parent, arch)
elif suite.get("generic"):
# This is a generic suite definition. It is either a runnable executable
# or has a main js file.
return RunnableGenericConfig(suite, parent, arch)
elif suite.get("tests"):
# This is neither a leaf nor a runnable.
return GraphConfig(suite, parent, arch)
else: # pragma: no cover
raise Exception("Invalid suite configuration.")
def BuildGraphConfigs(suite, arch, parent):
"""Builds a tree structure of graph objects that corresponds to the suite
configuration.
"""
# TODO(machenbach): Implement notion of cpu type?
if arch not in suite.get("archs", SUPPORTED_ARCHS):
return None
graph = MakeGraphConfig(suite, arch, parent)
for subsuite in suite.get("tests", []):
BuildGraphConfigs(subsuite, arch, graph)
parent.AppendChild(graph)
return graph
def FlattenRunnables(node, node_cb):
"""Generator that traverses the tree structure and iterates over all
runnables.
"""
node_cb(node)
if isinstance(node, RunnableConfig):
yield node
elif isinstance(node, Node):
for child in node._children:
for result in FlattenRunnables(child, node_cb):
yield result
else: # pragma: no cover
raise Exception("Invalid suite configuration.")
class Platform(object):
def __init__(self, options):
self.shell_dir = options.shell_dir
self.shell_dir_no_patch = options.shell_dir_no_patch
self.extra_flags = options.extra_flags.split()
@staticmethod
def GetPlatform(options):
if options.android_build_tools:
return AndroidPlatform(options)
else:
return DesktopPlatform(options)
def _Run(self, runnable, count, no_patch=False):
raise NotImplementedError() # pragma: no cover
def Run(self, runnable, count):
"""Execute the benchmark's main file.
If options.shell_dir_no_patch is specified, the benchmark is run once with
and once without patch.
Args:
runnable: A Runnable benchmark instance.
count: The number of this (repeated) run.
Returns: A tuple with the benchmark outputs with and without patch. The
latter will be None if options.shell_dir_no_patch was not
specified.
"""
stdout = self._Run(runnable, count, no_patch=False)
if self.shell_dir_no_patch:
return stdout, self._Run(runnable, count, no_patch=True)
else:
return stdout, None
class DesktopPlatform(Platform):
def __init__(self, options):
super(DesktopPlatform, self).__init__(options)
self.command_prefix = []
if options.prioritize or options.affinitize != None:
self.command_prefix = ["schedtool"]
if options.prioritize:
self.command_prefix += ["-n", "-20"]
if options.affinitize != None:
# schedtool expects a bit pattern when setting affinity, where each
# bit set to '1' corresponds to a core where the process may run on.
# First bit corresponds to CPU 0. Since the 'affinitize' parameter is
# a core number, we need to map to said bit pattern.
cpu = int(options.affinitize)
core = 1 << cpu
self.command_prefix += ["-a", ("0x%x" % core)]
self.command_prefix += ["-e"]
def PreExecution(self):
pass
def PostExecution(self):
pass
def PreTests(self, node, path):
if isinstance(node, RunnableConfig):
node.ChangeCWD(path)
def _Run(self, runnable, count, no_patch=False):
suffix = ' - without patch' if no_patch else ''
shell_dir = self.shell_dir_no_patch if no_patch else self.shell_dir
title = ">>> %%s (#%d)%s:" % ((count + 1), suffix)
command = self.command_prefix + runnable.GetCommand(shell_dir,
self.extra_flags)
try:
output = commands.Execute(
command,
timeout=runnable.timeout,
)
except OSError as e: # pragma: no cover
print title % "OSError"
print e
return ""
print title % "Stdout"
print output.stdout
if output.stderr: # pragma: no cover
# Print stderr for debugging.
print title % "Stderr"
print output.stderr
if output.timed_out:
print ">>> Test timed out after %ss." % runnable.timeout
if '--prof' in self.extra_flags:
os_prefix = {"linux": "linux", "macos": "mac"}.get(utils.GuessOS())
if os_prefix:
tick_tools = os.path.join(TOOLS_BASE, "%s-tick-processor" % os_prefix)
subprocess.check_call(tick_tools + " --only-summary", shell=True)
else: # pragma: no cover
print "Profiler option currently supported on Linux and Mac OS."
return output.stdout
class AndroidPlatform(Platform): # pragma: no cover
DEVICE_DIR = "/data/local/tmp/v8/"
def __init__(self, options):
super(AndroidPlatform, self).__init__(options)
LoadAndroidBuildTools(options.android_build_tools)
if not options.device:
# Detect attached device if not specified.
devices = adb_wrapper.AdbWrapper.Devices()
assert devices and len(devices) == 1, (
"None or multiple devices detected. Please specify the device on "
"the command-line with --device")
options.device = str(devices[0])
self.adb_wrapper = adb_wrapper.AdbWrapper(options.device)
self.device = device_utils.DeviceUtils(self.adb_wrapper)
def PreExecution(self):
perf = perf_control.PerfControl(self.device)
perf.SetHighPerfMode()
# Remember what we have already pushed to the device.
self.pushed = set()
def PostExecution(self):
perf = perf_control.PerfControl(self.device)
perf.SetDefaultPerfMode()
self.device.RunShellCommand(["rm", "-rf", AndroidPlatform.DEVICE_DIR])
def _PushFile(self, host_dir, file_name, target_rel=".",
skip_if_missing=False):
file_on_host = os.path.join(host_dir, file_name)
file_on_device_tmp = os.path.join(
AndroidPlatform.DEVICE_DIR, "_tmp_", file_name)
file_on_device = os.path.join(
AndroidPlatform.DEVICE_DIR, target_rel, file_name)
folder_on_device = os.path.dirname(file_on_device)
# Only attempt to push files that exist.
if not os.path.exists(file_on_host):
if not skip_if_missing:
logging.critical('Missing file on host: %s' % file_on_host)
return
# Only push files not yet pushed in one execution.
if file_on_host in self.pushed:
return
else:
self.pushed.add(file_on_host)
# Work-around for "text file busy" errors. Push the files to a temporary
# location and then copy them with a shell command.
output = self.adb_wrapper.Push(file_on_host, file_on_device_tmp)
# Success looks like this: "3035 KB/s (12512056 bytes in 4.025s)".
# Errors look like this: "failed to copy ... ".
if output and not re.search('^[0-9]', output.splitlines()[-1]):
logging.critical('PUSH FAILED: ' + output)
self.adb_wrapper.Shell("mkdir -p %s" % folder_on_device)
self.adb_wrapper.Shell("cp %s %s" % (file_on_device_tmp, file_on_device))
def _PushExecutable(self, shell_dir, target_dir, binary):
self._PushFile(shell_dir, binary, target_dir)
# Push external startup data. Backwards compatible for revisions where
# these files didn't exist.
self._PushFile(
shell_dir,
"natives_blob.bin",
target_dir,
skip_if_missing=True,
)
self._PushFile(
shell_dir,
"snapshot_blob.bin",
target_dir,
skip_if_missing=True,
)
self._PushFile(
shell_dir,
"snapshot_blob_ignition.bin",
target_dir,
skip_if_missing=True,
)
def PreTests(self, node, path):
suite_dir = os.path.abspath(os.path.dirname(path))
if node.path:
bench_rel = os.path.normpath(os.path.join(*node.path))
bench_abs = os.path.join(suite_dir, bench_rel)
else:
bench_rel = "."
bench_abs = suite_dir
self._PushExecutable(self.shell_dir, "bin", node.binary)
if self.shell_dir_no_patch:
self._PushExecutable(
self.shell_dir_no_patch, "bin_no_patch", node.binary)
if isinstance(node, RunnableConfig):
self._PushFile(bench_abs, node.main, bench_rel)
for resource in node.resources:
self._PushFile(bench_abs, resource, bench_rel)
def _Run(self, runnable, count, no_patch=False):
suffix = ' - without patch' if no_patch else ''
target_dir = "bin_no_patch" if no_patch else "bin"
title = ">>> %%s (#%d)%s:" % ((count + 1), suffix)
cache = cache_control.CacheControl(self.device)
cache.DropRamCaches()
binary_on_device = os.path.join(
AndroidPlatform.DEVICE_DIR, target_dir, runnable.binary)
cmd = [binary_on_device] + runnable.GetCommandFlags(self.extra_flags)
# Relative path to benchmark directory.
if runnable.path:
bench_rel = os.path.normpath(os.path.join(*runnable.path))
else:
bench_rel = "."
try:
output = self.device.RunShellCommand(
cmd,
cwd=os.path.join(AndroidPlatform.DEVICE_DIR, bench_rel),
timeout=runnable.timeout,
retries=0,
)
stdout = "\n".join(output)
print title % "Stdout"
print stdout
except device_errors.CommandTimeoutError:
print ">>> Test timed out after %ss." % runnable.timeout
stdout = ""
return stdout
class CustomMachineConfiguration:
def __init__(self, disable_aslr = False, governor = None):
self.aslr_backup = None
self.governor_backup = None
self.disable_aslr = disable_aslr
self.governor = governor
def __enter__(self):
if self.disable_aslr:
self.aslr_backup = CustomMachineConfiguration.GetASLR()
CustomMachineConfiguration.SetASLR(0)
if self.governor != None:
self.governor_backup = CustomMachineConfiguration.GetCPUGovernor()
CustomMachineConfiguration.SetCPUGovernor(self.governor)
return self
def __exit__(self, type, value, traceback):
if self.aslr_backup != None:
CustomMachineConfiguration.SetASLR(self.aslr_backup)
if self.governor_backup != None:
CustomMachineConfiguration.SetCPUGovernor(self.governor_backup)
@staticmethod
def GetASLR():
try:
with open("/proc/sys/kernel/randomize_va_space", "r") as f:
return int(f.readline().strip())
except Exception as e:
print "Failed to get current ASLR settings."
raise e
@staticmethod
def SetASLR(value):
try:
with open("/proc/sys/kernel/randomize_va_space", "w") as f:
f.write(str(value))
except Exception as e:
print "Failed to update ASLR to %s." % value
print "Are we running under sudo?"
raise e
new_value = CustomMachineConfiguration.GetASLR()
if value != new_value:
raise Exception("Present value is %s" % new_value)
@staticmethod
def GetCPUCoresRange():
try:
with open("/sys/devices/system/cpu/present", "r") as f:
indexes = f.readline()
r = map(int, indexes.split("-"))
if len(r) == 1:
return range(r[0], r[0] + 1)
return range(r[0], r[1] + 1)
except Exception as e:
print "Failed to retrieve number of CPUs."
raise e
@staticmethod
def GetCPUPathForId(cpu_index):
ret = "/sys/devices/system/cpu/cpu"
ret += str(cpu_index)
ret += "/cpufreq/scaling_governor"
return ret
@staticmethod
def GetCPUGovernor():
try:
cpu_indices = CustomMachineConfiguration.GetCPUCoresRange()
ret = None
for cpu_index in cpu_indices:
cpu_device = CustomMachineConfiguration.GetCPUPathForId(cpu_index)
with open(cpu_device, "r") as f:
# We assume the governors of all CPUs are set to the same value
val = f.readline().strip()
if ret == None:
ret = val
elif ret != val:
raise Exception("CPU cores have differing governor settings")
return ret
except Exception as e:
print "Failed to get the current CPU governor."
print "Is the CPU governor disabled? Check BIOS."
raise e
@staticmethod
def SetCPUGovernor(value):
try:
cpu_indices = CustomMachineConfiguration.GetCPUCoresRange()
for cpu_index in cpu_indices:
cpu_device = CustomMachineConfiguration.GetCPUPathForId(cpu_index)
with open(cpu_device, "w") as f:
f.write(value)
except Exception as e:
print "Failed to change CPU governor to %s." % value
print "Are we running under sudo?"
raise e
cur_value = CustomMachineConfiguration.GetCPUGovernor()
if cur_value != value:
raise Exception("Could not set CPU governor. Present value is %s"
% cur_value )
# TODO: Implement results_processor.
def Main(args):
logging.getLogger().setLevel(logging.INFO)
parser = optparse.OptionParser()
parser.add_option("--android-build-tools",
help="Path to chromium's build/android. Specifying this "
"option will run tests using android platform.")
parser.add_option("--arch",
help=("The architecture to run tests for, "
"'auto' or 'native' for auto-detect"),
default="x64")
parser.add_option("--buildbot",
help="Adapt to path structure used on buildbots",
default=False, action="store_true")
parser.add_option("--device",
help="The device ID to run Android tests on. If not given "
"it will be autodetected.")
parser.add_option("--extra-flags",
help="Additional flags to pass to the test executable",
default="")
parser.add_option("--json-test-results",
help="Path to a file for storing json results.")
parser.add_option("--json-test-results-no-patch",
help="Path to a file for storing json results from run "
"without patch.")
parser.add_option("--outdir", help="Base directory with compile output",
default="out")
parser.add_option("--outdir-no-patch",
help="Base directory with compile output without patch")
parser.add_option("--binary-override-path",
help="JavaScript engine binary. By default, d8 under "
"architecture-specific build dir. "
"Not supported in conjunction with outdir-no-patch.")
parser.add_option("--prioritize",
help="Raise the priority to nice -20 for the benchmarking "
"process.Requires Linux, schedtool, and sudo privileges.",
default=False, action="store_true")
parser.add_option("--affinitize",
help="Run benchmarking process on the specified core. "
"For example: "
"--affinitize=0 will run the benchmark process on core 0. "
"--affinitize=3 will run the benchmark process on core 3. "
"Requires Linux, schedtool, and sudo privileges.",
default=None)
parser.add_option("--noaslr",
help="Disable ASLR for the duration of the benchmarked "
"process. Requires Linux and sudo privileges.",
default=False, action="store_true")
parser.add_option("--cpu-governor",
help="Set cpu governor to specified policy for the "
"duration of the benchmarked process. Typical options: "
"'powersave' for more stable results, or 'performance' "
"for shorter completion time of suite, with potentially "
"more noise in results.")
(options, args) = parser.parse_args(args)
if len(args) == 0: # pragma: no cover
parser.print_help()
return 1
if options.arch in ["auto", "native"]: # pragma: no cover
options.arch = ARCH_GUESS
if not options.arch in SUPPORTED_ARCHS: # pragma: no cover
print "Unknown architecture %s" % options.arch
return 1
if options.device and not options.android_build_tools: # pragma: no cover
print "Specifying a device requires Android build tools."
return 1
if (options.json_test_results_no_patch and
not options.outdir_no_patch): # pragma: no cover
print("For writing json test results without patch, an outdir without "
"patch must be specified.")
return 1
workspace = os.path.abspath(os.path.join(os.path.dirname(__file__), ".."))
if options.buildbot:
build_config = "Release"
else:
build_config = "%s.release" % options.arch
if options.binary_override_path == None:
options.shell_dir = os.path.join(workspace, options.outdir, build_config)
default_binary_name = "d8"
else:
if not os.path.isfile(options.binary_override_path):
print "binary-override-path must be a file name"
return 1
if options.outdir_no_patch:
print "specify either binary-override-path or outdir-no-patch"
return 1
options.shell_dir = os.path.dirname(options.binary_override_path)
default_binary_name = os.path.basename(options.binary_override_path)
if options.outdir_no_patch:
options.shell_dir_no_patch = os.path.join(
workspace, options.outdir_no_patch, build_config)
else:
options.shell_dir_no_patch = None
prev_aslr = None
prev_cpu_gov = None
platform = Platform.GetPlatform(options)
results = Results()
results_no_patch = Results()
with CustomMachineConfiguration(governor = options.cpu_governor,
disable_aslr = options.noaslr) as conf:
for path in args:
path = os.path.abspath(path)
if not os.path.exists(path): # pragma: no cover
results.errors.append("Configuration file %s does not exist." % path)
continue
with open(path) as f:
suite = json.loads(f.read())
# If no name is given, default to the file name without .json.
suite.setdefault("name", os.path.splitext(os.path.basename(path))[0])
# Setup things common to one test suite.
platform.PreExecution()
# Build the graph/trace tree structure.
default_parent = DefaultSentinel(default_binary_name)
root = BuildGraphConfigs(suite, options.arch, default_parent)
# Callback to be called on each node on traversal.
def NodeCB(node):
platform.PreTests(node, path)
# Traverse graph/trace tree and interate over all runnables.
for runnable in FlattenRunnables(root, NodeCB):
print ">>> Running suite: %s" % "/".join(runnable.graphs)
def Runner():
"""Output generator that reruns several times."""
for i in xrange(0, max(1, runnable.run_count)):
# TODO(machenbach): Allow timeout per arch like with run_count per
# arch.
yield platform.Run(runnable, i)
# Let runnable iterate over all runs and handle output.
result, result_no_patch = runnable.Run(
Runner, trybot=options.shell_dir_no_patch)
results += result
results_no_patch += result_no_patch
platform.PostExecution()
if options.json_test_results:
results.WriteToFile(options.json_test_results)
else: # pragma: no cover
print results
if options.json_test_results_no_patch:
results_no_patch.WriteToFile(options.json_test_results_no_patch)
else: # pragma: no cover
print results_no_patch
return min(1, len(results.errors))
if __name__ == "__main__": # pragma: no cover
sys.exit(Main(sys.argv[1:]))