On Wed, Mar 14, 2012 at 5:23 PM, Robert Haas <robertmh...@gmail.com> wrote:
>> You still have HEAP_XMAX_{INVALID,COMMITTED} to reduce the pressure on mxid
>> lookups, so I think something more sophisticated is needed to exercise that
>> cost. Not sure what.
>
> I don't think HEAP_XMAX_COMMITTED is much help, because committed !=
> all-visible.
So because committed does not equal all visible there will be
additional lookups on mxids? That's complete rubbish.
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Simon Riggs http://www.2ndQuadrant.com/
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