Re: Enable data checksums by default

Am Freitag, den 29.03.2019, 23:10 +0900 schrieb Michael Paquier:
> 
> I can't really believe that many people set up shared_buffers at
> 128kB
> which would cause such a large number of page evictions, but I can
> believe that many users have shared_buffers set to its default value
> and that we are going to get complains about "performance drop after
> upgrade to v12" if we switch data checksums to on by default.

Yeah, i think Christoph's benchmark is based on this thinking. I assume
this very unrealistic scenery should emulate the worst case (many
buffer_reads, high checksum calculation load). 

    Bernd