Module peek_metrics 

What an index peek reports about the walk that answers it.

A walk runs on one driver or two, and the numbers a PeekScan carries are cumulative over every slice either drove. Each histogram is observed once per walk, by the driver that produces the terminal outcome. An offload is not terminal, so a slice that offloads reports nothing and the task that finishes reports the whole set. A cancelled walk reports nothing, so the substrate counters count walks that ended.

Structs

IndexPeekMetrics 🔒

The metrics an index peek reports from the worker that owns it.

PeekWalkMetrics 🔒

The metrics an index peek walk reports, on either substrate.

PermitWait 🔒

An offloaded walk’s place in the queue for a permit, for as long as it holds one.