I have the new Postgres 6.4 installed. My system has 256 Meg of RAM with 512 Meg of swap space (PII/400 MHz; RH Linux 5.1). I am trying to maximize the number of shared memory buffers for the postmaster. It seems that if I get over 28 megs (-B3500), that the postmaster won't run: nohup postmaster -i -B4000 > regress.log & [1] 737 [postgres@bigred ~]$ IpcMemoryCreate: shmget failed (Invalid argument) key=5432001, size=33719840, permission=600 FATAL 1: ShmemCreate: cannot create region I think that with 256 Meg of RAM that I should be able to extend that shared buffer size even further. Is this a limitation of Postgres or is this just that my system only has 28 meg to spare? (Or am I doing something wrong). Thanks. -Tony
