Before migrating away from Blazegraph, we need to capture a UI performance baseline for the current Query Service to enable before/after comparison.

The goal is to measure the current frontend performance of:

• Wikidata Query Service (query.wikidata.org)
• Local Query Service instance

Scope

Measure:

• Initial page load.
• Query execution latency (from submit to results).
• Result rendering time.
• Time to Interactive (TTI).
• Memory usage for larger result sets.
• Largest Contentful Paint (LCP) (optional).
• First Contentful Paint (FCP) (optional).

Recommended Tools (optional)

• Chrome DevTools.
• Lighthouse.
• Playwright.

Deliverables

• Baseline metrics for production and local environment
• Benchmark query set (small, medium, large)
• Saved reports/traces for later comparison

Acceptance Criteria

• Performance benchmarks are captured for both environments
• Results are documented and reproducible
• Baseline is ready for post-migration comparison