Performance Optimization Catalog

Performance optimization catalog

Reviewed: 2026-11-01 · Source: b7140848 · Availability: current main; stable/main boundaries are stated below.

Use separate fields for source presence, release availability, default/apply behavior, validation and measured outcome. Lifecycle is a browsing aid, not proof of a speedup or a shipment date.

Section	Meaning
Implemented	Mechanism exists in reviewed main; availability, default and limits are explicit.
Researched	Evidence exists for a mechanism not delivered as described; rejected and superseded work remains useful.
Unproven	Remaining proposal scope lacks accepted runtime benefit; partial delivered components are separately identified.
Current register	All 43 later merges including tests/docs/removals, with individual source/PR records.
Research and retired work	GitHub state, maintainer disposition and actual availability.

Caches, structural changes, resource policies and approximations are distinct mechanism types. A user toggle does not turn them all into shortcuts. Hot-path shortcuts covers guarded bypasses; controls is the operating guide. Methodology, measured evidence and debugging tools support evaluation.