1 # Copyright (c) 2010 The Chromium OS Authors. All rights reserved. 2 # Use of this source code is governed by a BSD-style license that can be 3 # found in the LICENSE file. 4 5 """Routines for reading performance results from a directory. 6 7 The directory should match the format created by the 'bootperf' 8 script; see comments in that script for a summary of the layout. 9 10 """ 11 12 import fnmatch 13 import os 14 import re 15 16 import resultset 17 18 19 _PERF_KEYVAL_PATTERN = re.compile("(.*){perf}=(.*)\n") 20 21 22 def _ReadKeyvalFile(results, file_): 23 """Read an autotest keyval file, and process the results. 24 25 The `file_` parameter is a file object with contents in autotest 26 perf keyval format: 27 <keyname>{perf}=<value> 28 29 Each iteration of the test is terminated with a single blank line, 30 including the last iteration. Each iteration's results are added 31 to the `results` parameter, which should be an instance of 32 TestResultSet. 33 34 @param results A TestResultSet where the result data will be 35 collected. 36 @param file_ File object for the results file to be read. 37 38 """ 39 kvd = {} 40 for line in iter(file_): 41 if line == "\n": 42 results.AddIterationResults(kvd) 43 kvd = {} 44 continue 45 m = _PERF_KEYVAL_PATTERN.match(line) 46 if m is None: 47 continue 48 kvd[m.group(1)] = m.group(2) 49 50 51 _RESULTS_PATH = "summary/platform_BootPerfServer/results/keyval" 52 53 54 def ReadResultsDirectory(dir_): 55 """Process results from a 'bootperf' output directory. 56 57 The accumulated results are returned in a newly created 58 TestResultSet object. 59 60 @param dir_ The directory containing the test results keyval file. 61 62 """ 63 res_set = resultset.TestResultSet(dir_) 64 dirlist = fnmatch.filter(os.listdir(dir_), "run.???") 65 dirlist.sort() 66 for rundir in dirlist: 67 keyval_path = os.path.join(dir_, rundir, _RESULTS_PATH) 68 try: 69 kvf = open(keyval_path) 70 except IOError: 71 continue 72 _ReadKeyvalFile(res_set, kvf) 73 res_set.FinalizeResults() 74 return res_set 75
