sitespeedio/sitespeed.io:17.0.0-alpha.2-plus1 lighthouse core web vital on Grafana/graphite don't seem to match with lighthouse.pageSummary.json

[norbybaru]

Hi Peter, sorry to bother you.

I have been testing your alpha release you made to store lighthouse web vitals to graphite and display value on dashboard sitespeedio/sitespeed.io:17.0.0-alpha.2-plus1 . I noticed weirdness with values, I am not sure if i am correct but i also understand that its not a stable release yet. I am able to display data in dashboard but those values do not match with lighthouse.pageSummary.json report file. FCP LCP TBT . maybe i am looking at it from a wrong view but i am correct to say those values should match ?

CLS seems to always be correct but the rest do not match.

I have both lighthouse and gpsi enabled.

it seems like on the 1st run it match with report file but any subsequent runs just looks off.

[norbybaru]

I am not too sure if it could be the way I am pulling data via Grafana. below is one example

[soulgalore]

I think the problem here is that we don't push the median, just the first run.

[soulgalore]

This has low prio for me because I don't see the use case of running Lighthouse multiple times but maybe I can review a PR.