Log Message:
-----------
Per previous analysis, the most correct notion of SampleOverhead is that
it is just the total time to do INSTR_TIME_SET_CURRENT(), and not any of
the other code involved in InstrStartNode/InstrStopNode. Even though I
fear we may end up reverting this patch altogether, we may as well have
the most correct version in our CVS archive.
Modified Files:
--------------
pgsql/src/backend/executor:
instrument.c (r1.16 -> r1.17)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/executor/instrument.c.diff?r1=1.16&r2=1.17)
---------------------------(end of broadcast)---------------------------
TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
match
