Re: data_checksums enabled by default (was: Move --data-checksums to common options in initdb --help)

On Wed, Jan  6, 2021 at 12:02:40PM -0500, Stephen Frost wrote:
> > It unfortunately also hurts other workloads. If we moved towards a saner
> > compression algorithm that'd perhaps not be an issue anymore...
> 
> I agree that improving compression performance would be good but I don't
> see that as relevant to the question of what our defaults should be.
> 
> imv, enabling page checksums is akin to having fsync enabled by default.
> Does it impact performance?  Yes, surely quite a lot, but it's also the
> safe and sane choice when it comes to defaults.

Well, you know fsyncs are required to recover from an OS crash, which is
more likely than detecting data corruption.

-- 
  Bruce Momjian  <bruce@momjian.us>        https://momjian.us
  EnterpriseDB                             https://enterprisedb.com

  The usefulness of a cup is in its emptiness, Bruce Lee