| // Copyright 2020 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. |
| |
| // Command rts-chromium is Chromium-specific part of the generic RTS framework. |
| // |
| // Install it: |
| // |
| // go install infra/rts/cmd/rts-chromium |
| // |
| // Primarily rts-chromium can generate history files: |
| // |
| // rts-chromium presubmit-history \ |
| // -from 2020-10-04 -to 2020-10-05 \ |
| // -out cq.hist |
| // |
| // It will ask to login on the first run. |
| // |
| // Filtering |
| // |
| // Flags -builder and -test can be used to narrow the search down to specific |
| // builder and/or test. The flag values are regexps. The following retrieves |
| // history of browser_tests on linux-rel: |
| // |
| // rts-chromium presubmit-history \ |
| // -from 2020-10-04 -to 2020-10-05 \ |
| // -out linux-rel-browser-tests.hist \ |
| // -builder linux-rel \ |
| // -test ninja://chrome/test:browser_tests/.+ |
| // |
| // Test duration fraction |
| // |
| // By default the tool fetches only 0.1% of test durations, because |
| // Chromium CQ produces 1B+ of test results per day. Fetching them all would be |
| // excessive. |
| // |
| // However, if the date range is short and/or filters are applied, the |
| // default fraction of 0.1% might be inappropriate. It can be changed using |
| // -duration-data-frac flag. The following changes the sample size to 10%: |
| // |
| // rts-chromium presubmit-history \ |
| // -from 2020-10-04 -to 2020-10-05 \ |
| // -out cq.hist |
| // -duration-data-frac 0.1 |
| package main |
