Re: reducing the overhead of frequent table locks, v4

On Tue, 2011-07-12 at 07:55 -0500, Robert Haas wrote:
> I haven't been that worried about overflow of the fast path table. If
> you are locking more than 16 relations at once, you probably have at
> least 5 tables in the query, maybe more - it depends in how many
> indexes you have, of course.  My assumption has been that at that
> point you're going to spend enough time planning and executing the
> query that the lock manager will no longer be a major bottleneck.  Of
> course, there might be cases where that isn't so.

Yeah, I think you're right here. It's probably not much of a practical
concern.

I was slightly bothered because it seemed a little unpredictable. But it
seems very minor, and if we wanted to fix it later I think we could.

Regards,Jeff Davis