Heikki Linnakangas <heikki(at)enterprisedb(dot)com> writes:
> Tom Lane wrote:
>> (Note that COPY per se will not trigger this behavior anyway, since it
>> will act in a limited number of buffers because of the recent buffer
>> access strategy patch.)
> Actually we dropped it from COPY, because it didn't seem to improve
> performance in the tests we ran.
Who's "we"? AFAICS, CVS HEAD will treat a large copy the same as any
other large heapscan.
regards, tom lane