| #!/usr/bin/python |
| # |
| # Copyright (c) 2011-2012 The Chromium Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| import logging, re |
| |
| from autotest_lib.client.bin import test, utils |
| |
| |
| class kernel_HdParm(test.test): |
| """ |
| Measure disk performance: both disk (-t) and cache (-T). |
| """ |
| version = 1 |
| |
| def run_once(self): |
| disk = utils.get_fixed_dst_drive() |
| |
| logging.debug("Using device %s", disk) |
| |
| result = utils.system_output('hdparm -T %s' % disk) |
| match = re.search('(\d+\.\d+) MB\/sec', result) |
| self.write_perf_keyval({'cache_throughput': match.groups()[0]}) |
| result = utils.system_output('hdparm -t %s' % disk) |
| match = re.search('(\d+\.\d+) MB\/sec', result) |
| self.write_perf_keyval({'disk_throughput': match.groups()[0]}) |
