Re: Postgresql on an AMD64 machine

I'm running the Redhat Version of Postgresql which came pre-installed
with Redhat ES. It's version number is 7.3.10-1. I'm not sure what
options it was compiled with. Is there a way for me to tell? Should i
just compile my own postgresql for this platform?

Thanks
Mark

On Mon, 2005-06-06 at 16:15, Tom Lane wrote:
> Mike Rylander <mrylander(at)gmail(dot)com> writes:
> > On 06 Jun 2005 12:53:40 -0500, Mark Rinaudo <mark(at)bowmansystems(dot)com> wrote:
> >> I'm not sure if this is the appropriate list to post this question to
> >> but i'm starting with this one because it is related to the performance
> >> of Postgresql server. I have a Penguin Computing dual AMD 64 bit
> >> opteron machine with 8 Gigs of memory. In my attempt to increase the
> >> number of shared_buffers from the default to 65000 i was running into a
> >> semget error when trying to start Postgresql.
>
> > Did you perhaps disable spinlocks when compiling PG?
>
> That sure looks like it must be the issue --- in a normal build the
> number of semaphores needed does not vary with shared_buffers, but
> it will if Postgres is falling back to semaphore-based spinlocks.
> Which is a really bad idea from a performance standpoint, so you
> want to fix the build.
>
> Which PG version is this exactly, and what configure options did
> you use? What compiler was used?
>
> regards, tom lane
>
--
Mark Rinaudo
318-213-8780 ext 111
Bowman Systems