rts-ml-chromium

Documentation

Overview

Command rts-ml-chromium is Chromium-specific part of the generic RTS framework that incorporates multiple features using an ml model.

Install it:

go install infra/rts/cmd/rts-ml-chromium

Primarily rts-chromium can generate history files:

rts-ml-chromium fetch-durations \
  -from 2020-10-04 -to 2020-10-05 \
  -out test.dur

rts-ml-chromium fetch-rejections \
  -from 2020-10-04 -to 2020-10-05 \
  -out test.rej

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 fetch-rejections \
  -from 2020-10-04 -to 2020-10-05 \
  -out test.rej \
  -builder linux-rel

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-ml-chromium fetch-durations \
  -from 2020-10-04 -to 2020-10-05 \
  -out test.dur \
  -duration-data-frac 0.1