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#!/usr/bin/python
#
# Copyright 2011 Google Inc. All Rights Reserved.
import os
import re
from utils import command_executer
class PerfProcessor(object):
class PerfResults(object):
def __init__(self, report, output):
self.report = report
self.output = output
def __init__(self, results_dir, chromeos_root, board, logger_to_use=None):
self._logger = logger_to_use
self._ce = command_executer.GetCommandExecuter(self._logger)
self._results_dir = results_dir
self._chromeos_root = chromeos_root
self._board = board
self._perf_relative_dir = os.path.basename(self._results_dir)
self.host_data_file = self.FindSingleFile(
"perf.data", os.path.join(
chromeos_root,
"chroot",
self._results_dir.lstrip("/")))
self.perf_out = self.FindSingleFile(
"perf.out", os.path.join(
chromeos_root,
"chroot",
self._results_dir.lstrip("/")))
def FindSingleFile(self, name, path):
find_command = ("find %s -name %s" % (path, name))
ret, out, err = self._ce.RunCommand(find_command, return_output=True)
if ret == 0:
data_files = out.splitlines()
if len(data_files) == 0:
# No data file, no report to generate.
data_file = None
else:
assert len(data_files) == 1, "More than 1 perf.out file found"
data_file = data_files[0]
return data_file
def GeneratePerfResults(self):
perf_location = os.path.join(self._results_dir,
self._perf_relative_dir)
if self.perf_out != None:
output = self._ReadPerfOutput()
if self.host_data_file != None:
perf_location = os.path.join(self._results_dir,
self._perf_relative_dir)
host_perf_location = os.path.dirname(self.host_data_file)
report = self._GeneratePerfReport(perf_location,
self._chromeos_root,
self._board)
else:
# lets make perf.report have output of stat...
report = output
return PerfProcessor.PerfResults(report, output)
def ParseStatResults(self, results):
output = results.output
result = {}
p = re.compile("\s*([0-9.]+) +(\S+)")
for line in output.split("\n"):
match = p.match(line)
if match:
result[match.group(2)] = match.group(1)
return result
def _ReadPerfOutput(self):
with open(self.perf_out, "rb") as f:
return f.read()
def _GeneratePerfReport(self, perf_location, chromeos_root, board):
perf_data_file = os.path.join(perf_location, "perf.data")
# Attempt to build a perf report and keep it with the results.
command = ("/usr/sbin/perf report --symfs=/build/%s"
" --vmlinux /build/%s/usr/lib/debug/boot/vmlinux"
" --kallsyms /build/%s/boot/System.map-*"
" -i %s --stdio | head -n1000" % (board, board, board,
perf_data_file))
_, out, _ = self._ce.ChrootRunCommand(chromeos_root,
command, return_output=True)
return out
class MockPerfProcessor(object):
def __init__(self):
pass
def GeneratePerfReport(self, *args):
pass
def ParseStatResults(self, *args):
return {}
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