| # Copyright 2013 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. |
| |
| from metrics import Metric |
| |
| class IOMetric(Metric): |
| """IO-related metrics, obtained via telemetry.core.Browser.""" |
| |
| @classmethod |
| def CustomizeBrowserOptions(cls, options): |
| options.AppendExtraBrowserArgs('--no-sandbox') |
| |
| def Start(self, page, tab): |
| raise NotImplementedError() |
| |
| def Stop(self, page, tab): |
| raise NotImplementedError() |
| |
| def AddResults(self, tab, results): |
| # This metric currently only returns summary results, not per-page results. |
| raise NotImplementedError() |
| |
| def AddSummaryResults(self, tab, results): |
| """Add summary results to the results object.""" |
| io_stats = tab.browser.io_stats |
| if not io_stats['Browser']: |
| return |
| |
| def AddSummariesForProcessType(process_type_io, process_type_trace): |
| """For a given process type, add all relevant summary results. |
| |
| Args: |
| process_type_io: Type of process (eg Browser or Renderer). |
| process_type_trace: String to be added to the trace name in the results. |
| """ |
| if 'ReadOperationCount' in io_stats[process_type_io]: |
| results.AddSummary('read_operations_' + process_type_trace, 'count', |
| io_stats[process_type_io] |
| ['ReadOperationCount'], |
| data_type='unimportant') |
| if 'WriteOperationCount' in io_stats[process_type_io]: |
| results.AddSummary('write_operations_' + process_type_trace, 'count', |
| io_stats[process_type_io] |
| ['WriteOperationCount'], |
| data_type='unimportant') |
| if 'ReadTransferCount' in io_stats[process_type_io]: |
| results.AddSummary('read_bytes_' + process_type_trace, 'kb', |
| io_stats[process_type_io] |
| ['ReadTransferCount'] / 1024, |
| data_type='unimportant') |
| if 'WriteTransferCount' in io_stats[process_type_io]: |
| results.AddSummary('write_bytes_' + process_type_trace, 'kb', |
| io_stats[process_type_io] |
| ['WriteTransferCount'] / 1024, |
| data_type='unimportant') |
| |
| AddSummariesForProcessType('Browser', 'browser') |
| AddSummariesForProcessType('Renderer', 'renderer') |
| AddSummariesForProcessType('Gpu', 'gpu') |
| |
