On 27 December 2012 18:06, Heikki Linnakangas <hlinnakan...@vmware.com> wrote:

> This would have the advantage that MaxBackends would be kept set at zero,
> until we know the final value. That way it's obvious that you cannot trust
> the value of MaxBackends in a contrib module preload-function, for example,
> which would reduce the chance of programmer mistakes.

I admire your forward thinking on that; yes, that could cause
problems. But even then, we would be admitting that nobody now gets a
valid value of MaxBackends, which sounds like it might be a problem in

Perhaps we should try to solve that a different way? Can we ask for
reservations of bgworkers ahead of running their _init functions,
using an additional API call?

That way we'd know the final value and everybody would have the
correct value at init time.

 Simon Riggs                   http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services

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