Thu, Jan 18
We should look at the varnish logs to see if we can find other pages that have a similar behavior. Is this part of T164248
May want to ping the upstream issue.
This would be a good thing to do, but need to coordinate time allocation from both our team and editing teams.
Resource Timing fallback is useless to us, we should skip collecting this if that's all we have access to it. We should check for firstPaint, browsers that don't have it will be less accurate.
CHrome did this (yay!)
Blocked on T175087
Needs followup with the Community Liasons team to figure out where/how to expose this when enabled on production.
Potentially put this data on to a wiki page in order to make use of it.
We should try to implement this in Firefox, in order to avoid the Chrome TTFB on second request bug
Please break this up into more discrete tasks.
Idea is to build a service that, given two WPT urls, can download them, compare them, and highlight differences/changes between them.
Now that Mozilla has released 57, we should open a new task to connect with them and get their help with debugging of issues (either by taking on that work themselves, or by educating us on how to do it).
Blocking on T117411
Once we can test on mobile phones, we should implement this.
Add an alert: If firstVisualChange is too low (eg, before 100ms, or whatever)
Will partially pursue via T179619
We're planning to recreate the most valuable part of this in another way.
@Tbayer Can you send us the full request log, rather than just the CSS? Wondering if this is happening with other resources on the page.
Looks a lot better with the shorter comparison time
Tue, Jan 16
Fri, Jan 12
Wed, Jan 10
Running a hive query to get actual request rates for these countries, on an hour-by-hour basis for the past month. I'll use that to calculate the appropriate sample rates.
Is the goal here just to quantify the impact? Or is there a target connect time/query time that we're trying to achieve?
Tue, Jan 9
This was reverted back to using php5 in https://phabricator.wikimedia.org/T182348
URL without lazy loading: https://en.m.wikipedia.org/wiki/Barack_Obama
There were two specific use cases that I/we had in mind:
Mon, Jan 8
@fgiunchedi Is there any sense of if/when this might happen? We have a couple of things that we're considering that would be easier if Graphite 1.0+ were available, but don't want to schedule them without a sense of timing.