Re: Different compression methods for FPI

[Andrey Borodin]

> 16 июня 2021 г., в 13:49, Heikki Linnakangas <hlinn...@iki.fi> написал(а):
> 
> Hmm, do we currently compress each block in a WAL record separately, for 
> records that contain multiple full-page images? That could make a big 
> difference e.g. for GiST index build that WAL-logs 32 pages in each record. 
> If it helps the compression, we should probably start WAL-logging b-tree 
> index build in larger batches, too.

Here's PoC for this [0]. But benchmark results are HW-dependent.

Best regards, Andrey Borodin.

https://www.postgresql.org/message-id/flat/41822E78-48EE-41AE-A89B-3CB76FF53980%40yandex-team.ru