Michael Fuhr <mike@fuhr.org> writes:
> BTW, here are the results of those tests: a VACUUM ANALYZE of
> template1 without --enable-cassert takes about 830ms on my box.
> With --enable-cassert it takes about 24200ms, regardless of the
> debug_assertions setting.
I believe that in current sources, the main cost of --enable-cassert
comes from the memory clobber checks it enables, which are for the
most part performed regardless of debug_assertions.
regards, tom lane