Folkert van Heusden <folkert@vanheusden.com> writes:
> I can ./configure --disable-spinlocks with CFLAGS: -O2 -march=pentium4
> -fprefetch-loop-arrays.
--disable-spinlocks is broken in 8.1.*. It took us a long time to
notice that, because no one in their right mind uses the option.
The performance cost is enormous.
regards, tom lane