Robert Hentosh (hentosh(at)io(dot)com) writes:
> Postgresql was compiled with ./configure --enable-syslog after
> modifying "#define BLCKSZ 16384" in src/include/config.h.in
Hm. I wonder if that is triggering the problem, or if it's something
platform-dependent? Could you rebuild with standard blocksize and
see if you still see the intermittent failures?
Also, are you running the parallel or serial regress tests ("make check"
or "make installcheck")?
regards, tom lane