Re: Memory use in 8.3 plpgsql with heavy use of xpath()

Gregory Stark <stark@[EMAIL PROTECTED]
> writes:
> That's just a special case of what would be expected to happen with
memory
> allocation anyways though. Few allocators return memory to the OS
anyways.

Well, that does happen on Linux for instance.  Since Matt knew in his
original re****t that the xpath leak was intra-transaction, I assumed
he must be using a platform where malloc/free can release memory back
to the OS --- else he couldn't have seen that behavior from outside
the backend.

Still, it's entirely possible that some sort of high-water-mark is
involved somewhere, perhaps in malloc's internal data structures.

			regards, tom lane

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