[wp-trac] [WordPress Trac] #58360: Measure additional load time performance metrics on each commit

[WordPress Trac]

#58360: Measure additional load time performance metrics on each commit
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 Reporter:  joemcgill                 |       Owner:  swissspidy
     Type:  task (blessed)            |      Status:  closed
 Priority:  normal                    |   Milestone:  6.4
Component:  Build/Test Tools          |     Version:
 Severity:  normal                    |  Resolution:  fixed
 Keywords:  has-patch has-unit-tests  |     Focuses:  performance
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Changes (by swissspidy):

 * status:  assigned => closed
 * resolution:   => fixed


Comment:

 In [changeset:"56399" 56399]:
 {{{
 #!CommitTicketReference repository="" revision="56399"
 Build/Test Tools: Measure additional load time metrics in performance
 tests.

 Three new metrics are being collected and reported as part of this change:

 - Time To First Byte (TTFB) - the time between the request for a resource
 and when the first byte of a response begins to arrive
 - Largest Contentful Paint (LCP) — the render time of the largest image or
 text block visible within the viewport
 - The difference between the two (LCP minus TTFB)

 Props joemcgill, flixos90, oandregal, mukesh27, youknowriad, swissspidy.
 Fixes #58360.
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/58360#comment:10>
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