Module sched 

2026-09-26: L2 scheduler and L3 cache instruments (queue depths, batch shape, loop phase timings, blocking syncs and D2H copies, CUDA-graph replays and captures, KV-block and SSM-slot occupancy) and the L4 SpecMatrix.

Fed through the scheduler’s TelemetryIo router and the GPU backend’s copy, sync and graph entry points. The prefix-cache hit and miss counters live in crate::run_metrics, not here.

Owner: telemetry. Invariants: none beyond the types.

Structs

SchedInstruments

SchedShape

2026-09-26: One tick’s scheduler shape, as the scheduler publishes it.

SpecMatrix

Constants

MAX_DRAFTS

2026-09-26: The widest verify step SpecMatrix places.

MAX_PHASES

2026-09-26: The most loop phases Telemetry::set_phase_names keeps.