Simon Riggs <simon(at)2ndquadrant(dot)com> writes:
> Perhaps if vacuum_delay_point() contained a timer check, we'd be able to
> see if any gap between vacuum delays was more than the actual delay
> itself. It would be nice to know they are all gone, forever.
vacuum_delay_point is intended to be cheap enough (in the non-delay
case) that no one would have any hesitation about dropping it into
loops. With a timer check in there, that might not be true, so I'm
resistant to doing it unconditionally. But I could see having some
#ifdef'd code that could be conditionally compiled in to measure the
maximum inter-delay-point time in a development build.
regards, tom lane