Greg Smith wrote:
On Tue, 14 Oct 2008, Mikkel H�gh wrote:
You are targetting DBAs using servers with less than 512 MB RAM. Is
PostgreSQL supposed to be used by professional DBAs on enterprise
systems or is it supposed to run out of the box on my old Pentium 3?
you'll discover that the Linux default for how much memory an
application like PostgreSQL can allocate is 32MB. This is true even if
you install the OS on a system with 128GB of RAM.
One thing that might help people swallow the off-putting default "toy
mode" performance of PostgreSQL would be an explanation of why
PostgreSQL uses its shared memory architecture in the first place. How
much of a performance or stability advantage does it confer under what
database usage and hardware scenarios? How can any such claims be proven
except by writing a bare-bones database server from scratch that can use
multiple memory models?
-Kevin Murphy
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