Glenn Sullivan <glenn.sullivan@varianinc.com> writes:
> What is the performance issue with setting shared_buffers to something like 45?
> In doing some timing on my system, I cannot tell any difference with 45 versus 1000.
What are you timing exactly? Almost every benchmark I've ever seen is
much happier with shared_buffers of at least a few hundred. Otherwise
you spend too much time copying data between kernel and user space.
regards, tom lane