But we still pay the penalty on WAL while writing them in the first
place I guess .. Is there an option to disable it.. I can test how much
is the impact I guess couple of %s but good to verify :-) )
Regards,
Jignesh
Alvaro Herrera wrote:
Jignesh Shah escribió:
Now comes the thing that I am still exploring
* Do we do checksum in WAL ? I guess we do .. Which means that we are
now doing double checksumming on the data. One in ZFS and one in
postgresql. ZFS does allow checksumming to be turned off (but on new
blocks allocated). But of course the philosophy is where should it be
done (ZFS or PostgreSQL).
Checksums on WAL are not optional in Postgres, because AFAIR they are
used to determine when it should stop recovering.
