On Fri, Jul 8, 2016 at 4:46 AM, Tom Lane <t...@sss.pgh.pa.us> wrote:
> Based on what I'm seeing so far, really 100K ought to be more than plenty
> of slop for most architectures, but I'm afraid to go there for IA64.

Searching for info on ia64 turned up this interesting thread:


>From that discussion it seems we should probably run these tests with
-O0 because the stack usage can be substantially higher without
optimizations. And it doesn't sound like ia64 uses much more *normal*
stack, just that there's the additional register stack.

It might not be unreasonable to commit the pmap hack, gather the data
from the build farm then later add an #ifdef around it. (or just make
it #ifdef USE_ASSERTIONS which I assume most build farm members are
running with anyways).

Alternatively it wouldn't be very hard to use mincore(2) to implement
it natively. I believe mincore is nonstandard but present in Linux and


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