Hi people, i have a database with 400GB running in a server with 128Gb RAM, and 32 cores, and storage over SAN with fiberchannel, the problem is when i go to do a backup whit pg_dumpall take a lot of 5 hours, next i do a restore and take a lot of 17 hours, that is a normal time for that process in that machine? or i can do something to optimize the process of backup/restore.
How many database objects do you have? A few large objects will dump and restore faster than a huge number of smallish objects.
Where is your bottleneck? "top" should show you whether it is CPU or IO.
I can pg_dump about 6GB/minute to /dev/null using all defaults with a small number of large objects.