Hi, > There are some changes in ReadBuffer logic if to compare with pg15. To define > which buffers to use, ReadBuffer used SmgrIsTemp function in pg15. The > decision was based on backend id of the relation. In pg16 the decision is > based on relpersistence attribute, that caused some problems on my side. My > opinion, we should choose local buffers based on backend ids of relations, > not on its persistence. Additional check for relpersistence prior to backend > id may improve the performance in some cases, I think. The internal design > may become more flexible as a result.
Well even assuming this patch will make it to the upstream some day, which I seriously doubt, it will take somewhere between 2 and 5 years. Personally I would recommend reconsidering this design. -- Best regards, Aleksander Alekseev
