Per Tom's suggestion on bug #15396, here's a patch to have platforms such as OSX give a more descriptive message when rejecting a nonzero value for effective_io_concurrency.
I had to adjust the GUC's wiring in the #ifndef case so that check_effective_io_concurrency() would be called when a nonzero value is supplied instead of just short-circuiting in parse_and_validate_value() when outside of [conf->min, conf->max]. James
no_fadvise_better_warning_bug_15396.patch
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----- James Robinson ja...@jlr-photo.com http://jlr-photo.com/
