Simon Riggs <[EMAIL PROTECTED]> writes:
> During recent tuning of the TPC-C workload, I produced the following
> patch to force COPY to leave some space in each data block when it loads
> data into heap relations.

This is an amazingly ugly way to do it.  Put the info into the Relation
structure instead of cluttering heap_insert's API.  (This would mean
that *every* heap_insert is affected, not only COPY, which is what you
want anyway I would think.)

In practice, a real fix for this would add a column to pg_class, in
which case you could get it from the Relation for free.

                        regards, tom lane

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