Heikki Linnakangas <[EMAIL PROTECTED]> writes:
> On every row, PageAddItem will scan all the line pointers on the target 
> page, just to see that they're all in use, and create a new line 
> pointer. That adds up, especially with narrow tuples like what I used in 
> the test.
> Attached is a fix for that.

This has been proposed before, and rejected before.  IIRC the previous
patch was quite a lot less invasive than this one (it didn't require
making special space on heap pages).  I don't recall why it wasn't

                        regards, tom lane

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