On 12/21/2016 09:04 AM, Andrew Dunstan wrote:

Yes, I agree. In any case, before we change anything can we agree on a description of what we currently do?

Here's a second attempt:

   The table_len will always be greater than the sum of the tuple_len,
   dead_tuple_len and free_space. The difference is accounted for by
   fixed page overhead, the per-page table of pointers to tuples, and
   padding to ensure that tuples are correctly aligned.

In the absence of further comment I will proceed along these lines.



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