Tom Lane fb276438b6 Suppress useless searches for unused line pointers in PageAddItem. To do ... this, add a 16-bit "flags" field to page headers by stealing some bits from pd_tli. We use one flag bit as a hint to indicate whether there are any unused line pointers; the remaining 15 are available for future use. This is a cut-down form of an idea proposed by Hiroki Kataoka in July 2005. At the time it was rejected because the original patch increased the size of page headers and it wasn't clear that the benefit outweighed the distributed cost. The flag-bit approach gets most of the benefit without requiring an increase in the page header size. Heikki Linnakangas and Tom Lane		2007-03-02 00:48:44 +00:00
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bufpage.c	Suppress useless searches for unused line pointers in PageAddItem. To do	2007-03-02 00:48:44 +00:00
itemptr.c	Update CVS HEAD for 2007 copyright. Back branches are typically not	2007-01-05 22:20:05 +00:00
Makefile	Remove remains of old depend target.	2007-01-20 17:16:17 +00:00