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 import logging, os, re 6 7 from autotest_lib.client.bin import test 8 from autotest_lib.client.bin import utils as bin_utils 9 from autotest_lib.client.common_lib import error, utils 10 11 class platform_AesThroughput(test.test): 12 version = 1 13 14 15 def setup(self): 16 self.results = {'bytes_per_sec_ideal_min' : 20 * 1024 * 1024} 17 18 19 def run_once(self): 20 num_cpus = bin_utils.count_cpus() 21 logging.debug('Running using all cpus: %d' % num_cpus) 22 results = self.openssl_speed('aes-256-cbc', '-multi %d' % num_cpus) 23 parsed = self.parse_results(results) 24 self.update_stats(parsed) 25 self.export_stats() 26 27 28 def openssl_speed(self, cipher, options=''): 29 cmd = 'openssl speed %s -mr %s' % (cipher, options) 30 return utils.system_output(cmd, retain_output=True) 31 32 33 def parse_results(self, results, name=''): 34 # Split the results into lines. 35 # We really only want the final line for our purposes. 36 type, times = results.split("\n")[-1].split(' ') 37 # +F:num:aes-256 cbc -> aes_256_cbc 38 type = re.sub('[- ]', '_', type.split(':')[-1]) 39 # cbc:time:time:time:... -> time, time, ... 40 times = times.split(':')[1:] 41 42 # Build the key names 43 if len(name) > 0: 44 name = name + '_' 45 key_prefix = 'bytes_per_sec_' + name + type + '_blocksz_' 46 keys = ['16_bytes', '64_bytes', '256_bytes', '1024_bytes', '8192_bytes'] 47 keys = [key_prefix+k for k in keys] 48 49 if len(times) > len(keys): 50 logging.debug(results) 51 raise error.TestFail('openssl output format parsing failed') 52 return dict(zip(keys, times)) 53 54 55 def update_stats(self, keyvals): 56 self.results.update(keyvals) 57 58 59 def export_stats(self): 60 self.write_perf_keyval(self.results) 61
