Re: Use fadvise in wal replay

[Andrey Borodin]

> On 21 Jun 2022, at 13:20, Jakub Wartak <jakub.war...@tomtom.com> wrote:
> 
> Maybe the important question is why would be readahead mechanism be disabled 
> in the first place via /sys | blockdev ?

Because database should know better than OS which data needs to be prefetched 
and which should not. Big OS readahead affects index scan performance.

Best regards, Andrey Borodin.