Konstantin Knizhnik a039f8381f Optimize vector get last written LSN (#10360) ...

## Problem

See https://github.com/neondatabase/neon/issues/10281

pg17 performs extra lock/unlock operation when fetching LwLSN.

## Summary of changes

Perform all lookups under one lock, moving initialization of not found
keys to separate loop.

Related Postgres PR:
https://github.com/neondatabase/postgres/pull/553

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Co-authored-by: Konstantin Knizhnik <knizhnik@neon.tech>

2025-01-14 05:54:30 +00:00

..

postgres-v14 @ 210a0ba3af

Start with minimal prefetch distance to minimize prefetch overhead for exact or limited index scans (#10359)

2025-01-13 14:26:11 +00:00

postgres-v15 @ d3141e17a7

Start with minimal prefetch distance to minimize prefetch overhead for exact or limited index scans (#10359)

2025-01-13 14:26:11 +00:00

postgres-v16 @ f63b141cfb

Start with minimal prefetch distance to minimize prefetch overhead for exact or limited index scans (#10359)

2025-01-13 14:26:11 +00:00

postgres-v17 @ 0f8da73ed0

Optimize vector get last written LSN (#10360)

2025-01-14 05:54:30 +00:00

revisions.json

Optimize vector get last written LSN (#10360)

2025-01-14 05:54:30 +00:00