Robert Haas <> writes:
> I tried this.  At least on my fairly vanilla MacOS X desktop, an mlock
> for a larger amount of memory than was conveniently on hand (4GB, on a
> 4GB box) neither succeeded nor failed in a timely fashion but instead
> progressively hung the machine, apparently trying to progressively
> push every available page out to swap.  After 5 minutes or so I could
> no longer move the mouse.  After about 20 minutes I gave up and hit
> the reset button.  So there's apparently no value to this as a
> diagnostic tool, at least on this platform.

Fun.  I wonder if other BSDen are as brain-dead as OSX on this point.

It'd probably at least be worth filing a bug report with Apple about it.

                        regards, tom lane

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