Hello,
I recently upgraded a server from 9.4 to 9.5 (Debian) via
pg_upgradecluster. The upgrade finished well, and so far the databases
in the upgraded cluster seem in good form. However, I noticed a
dramatic reduction in the size of the dump created by the new server.
One of the databases was 34G when dumped by the 9.4 server is now dumped
at 1.1G in the new 9.5 version (using pg_dump -Fc in both cases). What
has caused such remarkable improvement?!
Thanks,
--
Seb