ExpectedQueueingTime is a metric that attempts to measure latency. It can be used to detect regressions in Chrome, but we would also like to find out when particular websites regress on this metric.
The following revision refers to this bug: https://chromium.googlesource.com/chromium/src.git/+/6d612699112de180c4bd62af3220e77bb304e959 commit 6d612699112de180c4bd62af3220e77bb304e959 Author: Nicolas Pena <npm@chromium.org> Date: Thu Nov 23 18:26:26 2017 Report ExpectedQueueingTime on UKM This CL allows MetricsCollector to report EQT on UKM once every 5 seconds. UKM Collection Review: https://docs.google.com/document/d/10bBBu_Z9Sv8-EaaSlRuNO48bjWweJO9WYknNtZ0ztDo/edit?disco=AAAABg9L4aU&ts=5a0dcfb1 Bug: 773469 Change-Id: Ib545614de298a721e29608768de94f3dbf2cce59 Reviewed-on: https://chromium-review.googlesource.com/777688 Reviewed-by: Steven Holte <holte@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org> Reviewed-by: lpy <lpy@chromium.org> Commit-Queue: Nicolás Peña Moreno <npm@chromium.org> Cr-Commit-Position: refs/heads/master@{#518984} [modify] https://crrev.com/6d612699112de180c4bd62af3220e77bb304e959/components/ukm/test_ukm_recorder.h [modify] https://crrev.com/6d612699112de180c4bd62af3220e77bb304e959/components/ukm/ukm_recorder_impl.h [modify] https://crrev.com/6d612699112de180c4bd62af3220e77bb304e959/services/resource_coordinator/BUILD.gn [modify] https://crrev.com/6d612699112de180c4bd62af3220e77bb304e959/services/resource_coordinator/DEPS [modify] https://crrev.com/6d612699112de180c4bd62af3220e77bb304e959/services/resource_coordinator/coordination_unit/coordination_unit_manager.h [modify] https://crrev.com/6d612699112de180c4bd62af3220e77bb304e959/services/resource_coordinator/observers/background_metrics_reporter.h [modify] https://crrev.com/6d612699112de180c4bd62af3220e77bb304e959/services/resource_coordinator/observers/metrics_collector.cc [modify] https://crrev.com/6d612699112de180c4bd62af3220e77bb304e959/services/resource_coordinator/observers/metrics_collector.h [modify] https://crrev.com/6d612699112de180c4bd62af3220e77bb304e959/services/resource_coordinator/observers/metrics_collector_unittest.cc [modify] https://crrev.com/6d612699112de180c4bd62af3220e77bb304e959/tools/metrics/ukm/ukm.xml
Comment 1 by npm@chromium.org
, Oct 10 2017