Re: pg_dump/pg_restore --jobs practical limit?

Marc MILLAS

Senior Architect

+33607850334

www.mokadb.com

Testing pg_restore with different --jobs= values will be easier.   pg_dump is what's going to be reading from a constantly varying system.

Hello,

each time I do a replatforming of this kind, with DB up to 2 TB, I did create the target DB, eventually needed users then the appropriate databases, and finally,  a simple script to pipe pg_dump into psql, databases one by one.

So.. one thread. Each time, it was limited by the network bandwidth. My last replatforming with a 10 Gb net and a 1.5 TB DB did show a transfer of 500 Mbytes per second (5Gbs) so.. less than an hour.

which is just fine. Launch it, have lunch, a coffee, and ...done for test.  For Prod, I am used to do it at the quietest night of the week end. and have a nap ( a short one !)...:-)