On 5/22/23 16:29, Jeff Ross wrote:
On 5/22/23 5:24 PM, Adrian Klaver wrote:
On 5/22/23 16:20, Jeff Ross wrote:
Hello!
From docs:
https://www.postgresql.org/docs/current/pgupgrade.html
The --jobs option allows multiple CPU cores to be used for
copying/linking of files and to dump and restore database schemas in
parallel; a good place to start is the maximum of the number of CPU
cores and tablespaces. This option can dramatically reduce the time to
upgrade a multi-database server running on a multiprocessor machine.
So is the 1400G mostly in one database in the cluster?
The full commands we are using for pg_upgrade are pretty stock:
Yes, one big database with about 80 schemas and several other smaller
databases so -j should help, right?
As I understand it no. That the parallelism is between databases not
within a database. Further that 'database schemas' refers to schema as
the overall database object definitions not the namespaces known as
schemas in the database.
'
Jeff
--
Adrian Klaver
adrian.klaver@xxxxxxxxxxx
