On Wed, Dec 13, 2006 at 12:27:22AM -0800, Michael K. Smith - Adhost wrote: > Hello Bill: > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Bill Moran > Sent: Monday, December 11, 2006 2:15 PM > To: [EMAIL PROTECTED] > Subject: shmmax tops out at 2G? > > > uname -a > FreeBSD db00.lab00 6.2-BETA3 FreeBSD 6.2-BETA3 #1: Fri Dec 8 09:27:37 > EST 2006 [EMAIL PROTECTED]:/usr/obj/usr/src/sys/DB-2850-amd64 amd64 > > sysctl kern.ipc.shmmax=2200000000 > kern.ipc.shmmax: 2100000000 -> -2094967296 > > Looks like an unsigned 32-bit int. That doesn't seem to scale as well > as > would be expected on 64-bit arch. > > Is this a mistake, or intentional? I'm working with some big memory > systems, and I sure would like to allocate more than 2G for PostgreSQL > to use ... > > -- > Bill Moran > Collaborative Fusion Inc. > > --- > > This may be a silly question but, have you compiled a PAE-enabled > kernel? If not, check out /sys/i386/conf/PAE.
Yeah, it is ;-) PAE is a hack for legacy i386 systems which cannot run in full 64-bit (amd64) mode - it's not relevant to this problem. Bill's guess is probably right, so someone needs to go over the sysv ipc code and make it 64-bit capable. Kris
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