> On Aug 6, 2024, at 08:11, bruno vieira da silva <brunogi...@gmail.com> wrote:
>
> so my question is why data checksums aren't enabled by default on pg?
At this point, mostly historical reasons. They're also superfluous if your
underlying file system or storage hardware does storage-level corruption checks
(which most don't).
> the pg doc
> mentions a considerable performance penality, how considerable it is?
That line is probably somewhat out of date at this point. We haven't seen a
significant slowdown in enabling them on any modern hardware. I always turn
them on, except on the type of filesystems/hardware mentioned above.
