First of all, I'd like to mention that it was strange to see thatthe server performance degraded by 1-2% when we changed kernel/userland to x86_64 from default installed i386 userland/amd64 kernel. The operating system was Debian Linux,filesystem ext3.
Did you use postgres compiled for AMD64 with the 64 kernel, or did you use a 32 bit postgres in emulation mode ?
