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17:58:16 <igrigorik> hello!
18:05:35 <igrigorik> Using User Timing at scale -- Dan Abramov
18:05:58 <igrigorik> Dan: working on React.. CDT integration was great
18:06:26 <igrigorik> ... there is no way for a library to tell if user is recording or not, we're afraid of wasting memory
18:06:53 <igrigorik> ... we're calling clearmarks/measures all the time, but it means we can't harvest it later
18:07:52 <igrigorik> ... our main target is CDT
18:08:07 <igrigorik> ... i.e. in dev mode
18:09:13 <xiaoqian> an example -> https://facebook.github.io/react/docs/optimizing-performance.html#profiling-components-with-chrome-timeline
18:17:00 <igrigorik> a) sounds like there is a need for API in devtools for in "record mode"
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18:18:04 <igrigorik> b) you should log some data to performance timeline.. perhaps with lower fidelity
18:21:10 <igrigorik> Nic: we monitor React today, we look at routechange events
18:21:26 <igrigorik> Dan: we expose UT for every component in dev mode
18:23:54 <igrigorik> Enforce payload limits via Fetch API: https://github.com/w3c/beacon/pull/39
18:25:59 <igrigorik> https://github.com/w3c/web-platform-tests/pull/4024
18:28:01 <igrigorik> timeline: https://github.com/w3c/performance-timeline/issues/66
18:29:44 <igrigorik> Q: is this L2 or L3 feature?
18:31:39 <igrigorik> we'll revisit next time.
18:31:47 <igrigorik> Set `name` to document address: https://github.com/w3c/navigation-timing/pull/61
18:35:36 <igrigorik> shipping in M57 in Chrome, stable ~mid march
18:35:55 <igrigorik> we'll pause landing it until we have confidence in it
18:40:27 <igrigorik> next: charter update
18:40:37 <igrigorik> Todd: we need/want charter update from MSFT end
18:40:48 <igrigorik> ... I'll review and merge, first pass looks good
18:41:09 <igrigorik> we'll followup with plh@ on next steps
18:41:37 <igrigorik> https://github.com/w3c/page-visibility/issues/25#issuecomment-262263862
18:45:57 <igrigorik> xiaoqian: we probably need a test for prerender.
18:46:05 <igrigorik> AI: let's start a new issue on the repo
18:46:31 <igrigorik> we'll wait for PR until we resolve ^
18:46:56 <igrigorik> https://github.com/w3c/hr-time/issues/32
18:49:12 <igrigorik> Todd: there are tests in the WPT tree that require user input
18:50:34 <igrigorik> https://github.com/w3c/resource-timing/issues/92#issuecomment-283204910
18:55:11 <igrigorik> L2 CR for UT: https://github.com/w3c/user-timing/issues/19
18:56:41 <igrigorik> Todd: I'll try to get the updated tests.
18:57:11 <igrigorik> We'll try to triage UT2 issues before next call
18:57:53 <igrigorik> next call: March 22nd
18:59:07 <xiaoqian> RRSAgent, please draft minutes v2
18:59:07 <RRSAgent> I have made the request to generate http://www.w3.org/2017/03/01-webperf-minutes.html xiaoqian
18:59:26 <xiaoqian> RRSAgent, make log public
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