Hiroshi Inoue <Inoue(at)tpf(dot)co(dot)jp> writes:
> I couldn't cancel VACUUM using current cvs.
Hm. There should probably be a CHECK_FOR_INTERRUPTS in the per-
tuple (or at worst per-page) loops in vacuum.
> I couldn't cancel simple SELECT which returns no row either.
How long could that take?
regards, tom lane