pub const PINNED_GATE_WAIT: Duration;Expand description
How long a drawing read waits for a scan already in flight.
The seat’s gate is held across the watch’s whole pass - its PR lookup included - so a review page’s read that queued behind one would wait the watch’s work rather than its own. The base fetch is not in that pass: a scan kicks it and never waits. Past this bound the read is refused, and it re-reads the tree locally against the base it refreshed: the store may predate that base.