| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Martijn van Oosterhout <kleptog(at)svana(dot)org> |
| Cc: | pgsql-hackers(at)postgreSQL(dot)org, Jie Zhang <jzhang(at)greenplum(dot)com>, Gavin Sherry <swm(at)linuxworld(dot)com(dot)au> |
| Subject: | Re: Refactoring the API for amgetmulti |
| Date: | 2006-07-26 15:59:52 |
| Message-ID: | 3174.1153929592@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Martijn van Oosterhout <kleptog(at)svana(dot)org> writes:
> I've considered whether it's worthwhile going to other way: getting the
> IndexScan executer node to uses getmulti to reduce index AM overhead.
> But that requires backward scan support also...
I think Heikki got most of the low-hanging fruit already with that patch
for page-at-a-time scanning in btree. There's some wasted overhead just
from multiple levels of function call, but I doubt it's really a big
deal anymore.
regards, tom lane
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