From: Tsunakawa, Takayuki/綱川 貴之 > Thank you, I'll try the read-write test with these settings on the weekend, > when my PC is available. I understood that your intention is to avoid being > affected by checkpointing and WAL segment creation.
The result looks nice as follows. I took the mean value of three runs. shared_buffers tps 256MB 990 512MB 813 1GB 1189 2GB 2258 4GB 5003 8GB 5062 "512MB is the largest effective size" seems to be a superstition, although I don't know the reason for the drop at 512MB. Regards Takayuki Tsunakawa -- Sent via pgsql-hackers mailing list (email@example.com) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers