What info timing.entries section gives in Lighthouse?

[AAMRAPALI]

For example, if I have to get FCP, which metric should I refer? I have the option to get it from Metrics sections or timing.entries. And why do these values in these two sections differ? I considered that maybe their units are different - seconds/Ms. But then the values are different entirely. Which makes me think that maybe timing.entries conveys some different info like maybe logs of events happening during the page load. But timing.entries also has 'duration' section - What does this duration represent then?

1. Metrics

2. Timing.entries

[adamraine]

Don't use Timing.entries. This is a log of functions run as a part of Lighthouse execution and is not related to the actual metric value.

Using lhr.audits['metrics'] will yield the actual timing measurments. firstContentfulPaint should represent what the Lighthouse report will display and is what you should use most often because it always accounts for throttling.

If you are using simulated throttling, observedFirstContentfulPaint will represent the unthrottled metric value.