> On 21 Jun 2022, at 13:20, Jakub Wartak <Jakub.Wartak@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
affectsindex scan performance.
Best regards, Andrey Borodin.