Alvaro Herrera <alvherre@commandprompt.com> writes:
> Hmm, aren't ParameterStatus messages sent just before Ready For Query?
No, they're sent immediately (see ReportGUCOption). I had some ideas
in the back of my head about postponing such sends until just before
Ready For Query, with the idea of avoiding work for repeated changes
to the same variable; but it's not done yet.
regards, tom lane