- From: Xiaoqian Wu <xiaoqian@w3.org>
- Date: Wed, 04 Dec 2019 19:33:31 +0800
- To: public-privacy@w3.org
- Cc: yoav@yoav.ws
Hi PING, The WebPerf folks are working on a new version of the Performance Timeline spec: https://www.w3.org/TR/performance-timeline-2/ This specification provides methods to store and retrieve high resolution performance metric data, Navigation Timing, Resource Timing and User Timing are examples of APIs define performance metrics that describe the Performance Timeline of a web application. This Performance Timeline Level 2 spec includes the following updates, * extends the base definition of the Performance interface defined by High Resolution Time Level 2, Please refer to [HR-TIME-2] for Clock resolution privacy issue[1]. * Exposes PerformanceEntry, which hosts the performance data of various metrics, in Web Workers. * Adds support for performance observers[2], which are used to observe the Performance Timeline to be notified of new performance metrics as they are recorded. To make sure the observer is exposing the minimum amount of information necessary, it only subscribe to event types that it is interested in, and disconnect the observer once it's no longer needed. Please let us know if there is any privacy concern for Performance Timeline before the end of January, either by email <public-web-perf@w3.org> or use GitHub issues <https://github.com/w3c/navigation-timing/>. Thanks. -xiaoqian [1] https://www.w3.org/TR/hr-time-2/Overview.html#sec-privacy-security [2] https://www.w3.org/TR/performance-timeline-2/#the-performanceobserver-interface
Received on Wednesday, 4 December 2019 11:33:33 UTC