On 2022-Sep-28, Peter Geoghegan wrote: > It would be useful if there were generic tests that caught issues like > this. There are various subtle effects related to how struct layout > can impact WAL record size that might easily be missed. It's not like > there are a huge number of truly critical WAL records to have tests > for.
What do you think would constitute a test here? Say: insert N records to a heapam table with one index of each kind (under controlled conditions: no checkpoint, no autovacuum, no FPIs), then measure the total number of bytes used by WAL records of each rmgr. Have a baseline and see how that changes over time. -- Álvaro Herrera PostgreSQL Developer — https://www.EnterpriseDB.com/
