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#!/usr/bin/env python3
# ===--- Benchmark_DTrace.in ---------------------------------------------===//
#
# This source file is part of the Swift.org open source project
#
# Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
# Licensed under Apache License v2.0 with Runtime Library Exception
#
# See https://swift.org/LICENSE.txt for license information
# See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
#
# ===---------------------------------------------------------------------===//
import argparse
import os
import subprocess
import sys
DRIVER_LIBRARY_PATH = "@PATH_TO_DRIVER_LIBRARY@"
sys.path.append(DRIVER_LIBRARY_PATH)
DTRACE_PATH = os.path.join(DRIVER_LIBRARY_PATH, "swift_stats.d")
import perf_test_driver # noqa (E402 module level import not at top of file)
# Regexes for the XFAIL_LIST. Matches against '([Onone|O|Osize],TestName)'
XFAIL_LIST = []
class DTraceResult(perf_test_driver.Result):
def __init__(self, name, status, output, csv_output):
perf_test_driver.Result.__init__(self, name, status, output, XFAIL_LIST)
self.csv_output = csv_output
def is_failure(self):
return not bool(self.status)
@classmethod
def data_headers(cls):
return ["Name", "Result", "Total RR Opts", "Total RR Opts/Iter"]
@classmethod
def data_format(cls, max_test_len):
non_name_headers = DTraceResult.data_headers()[1:]
fmt = ("{:<%d}" % (max_test_len + 5)) + "".join(
["{:<%d}" % (len(h) + 2) for h in non_name_headers]
)
return fmt
@classmethod
def print_data_header(cls, max_test_len, csv_output):
headers = cls.data_headers()
if csv_output:
print(",".join(headers))
return
print(cls.data_format(max_test_len).format(*headers))
def print_data(self, max_test_len):
result = [self.get_name(), self.get_result()] + map(str, self.output)
if self.csv_output:
print(",".join(result))
return
print(DTraceResult.data_format(max_test_len).format(*result))
class DTraceBenchmarkDriver(perf_test_driver.BenchmarkDriver):
def __init__(self, binary, xfail_list, csv_output):
perf_test_driver.BenchmarkDriver.__init__(
self, binary, xfail_list, enable_parallel=True, opt_levels=["O"]
)
self.csv_output = csv_output
def print_data_header(self, max_test_len):
DTraceResult.print_data_header(max_test_len, self.csv_output)
def prepare_input(self, name):
return {}
def process_input(self, data):
test_name = "({}_{})".format(data["opt"], data["test_name"])
print("Running {}...".format(test_name))
sys.stdout.flush()
def get_results_with_iters(iters):
e = os.environ
e["SWIFT_DETERMINISTIC_HASHING"] = "1"
p = subprocess.Popen(
[
"sudo",
"dtrace",
"-s",
DTRACE_PATH,
"-c",
"%s %s %s %s"
% (
data["path"],
data["test_name"],
"--num-iters=%d" % iters,
"--num-samples=2",
),
],
stdout=subprocess.PIPE,
stderr=open("/dev/null", "w"),
env=e,
universal_newlines=True,
)
results = [x for x in p.communicate()[0].split("\n") if len(x) > 0]
return [
x.split(",")[1] for x in results[results.index("DTRACE RESULTS") + 1 :]
]
iter_2_results = get_results_with_iters(2)
iter_3_results = get_results_with_iters(3)
iter_5_results = get_results_with_iters(5)
results = []
foundInstability = False
for x in zip(iter_2_results, iter_3_results, iter_5_results):
result_2 = int(x[0])
result_3 = int(x[1])
result_5 = int(x[2])
single_iter = result_3 - result_2
two_iter = result_5 - result_3
# We are always doing more work, so these should be the same. Fail
# if we have a negative number.
if single_iter < 0 or two_iter < 0:
foundInstability = True
# Our retain traffic should always increase linearly with iteration
# size.
if (single_iter * 2) == two_iter:
foundInstability = True
results.append(result_3)
results.append(single_iter)
return DTraceResult(
test_name, int(not foundInstability), results, self.csv_output
)
SWIFT_BIN_DIR = os.path.dirname(os.path.abspath(__file__))
def parse_args():
parser = argparse.ArgumentParser()
parser.add_argument(
"-filter",
type=str,
default=None,
help="Filter out any test that does not match the given regex",
)
parser.add_argument(
"--emit-csv",
default=False,
action="store_true",
help="Emit csv output",
dest="csv_output",
)
return parser.parse_args()
if __name__ == "__main__":
args = parse_args()
g = DTraceBenchmarkDriver(SWIFT_BIN_DIR, XFAIL_LIST, args.csv_output)
if g.run(args.filter):
sys.exit(0)
else:
sys.exit(-1)
|
