Improve browser Largest Contentful Paint (LCP) performance of Project Commit Details page into S4 tier
The Project Commit Details page's browser Largest Contentful Paint (LCP) performance is unperformant:
NAME | FCP (ms) | LCP (ms) | TBT (ms) | SI (ms) | LVC (ms) | TFR SIZE (kb) | SCORE | RESULT
-------------------|----------|------------------|------------------|---------|----------|---------------|-------|-------
web_project_commit | 2979 | ✓ 3121 (<12500) | ✓ 380 (<1000) | 3549 | 4366 | 331.7 | 72 | Passed
The Commit Details page being tested can be seen here on Staging. This page is showing commit details, below is the screenshot of page's historical test LCP results
Test Details
Testing was done on our 10k Reference Architecture environment with our lab condition SiteSpeed pipeline (named GitLab Browser Performance Tool internally). The project being tested is a copy of gitlabhq (tarball can be found here). GitLab Browser Performance Tool tests information is listed at Current test details page.
The latest GitLab Browser Performance pipeline results can always be found here. Through this page the full SiteSpeed report can be found via the SiteSpeed Report
link on that page.
As per our performance targets this page's LCP metric is above the target of 3000 ms which is severity3 . Task is to improve the page's browser performance to meet the target.