Peter Eisentraut <[EMAIL PROTECTED]> writes:
> The merge sort is here:


> It uses alloca, so we're good here.

Uh ... but it also uses malloc, and potentially a honkin' big malloc at
that (up to a quarter of physical RAM).  So I'm worried again.

Anyway, Qingqing's question still needs to be answered: how can a sort
of under 30k items take so long?

                        regards, tom lane

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