Re: Probable faq: need some benchmarks of pgsql vr.s mysql

> There is an IO completion callback that is called when the read into
> the buffer pool is finished. AFAIK, the callback will merge the
> pending changes from the insert buffer. Oh, and the name of the insert
> buffer has been changed to "change buffer" as it can buffer inserts
> and deletes in MySQL 5.5. Also note that there are no updates for
> secondary indexes. There is only insert and delete marking.

Seems like it still needs work.  I'm not entirely convinced that an
index buffer would be a net win for PostgreSQL, given the different
structure of our storage.  I'd look at those "fractal indexes" first.

--
                                  -- Josh Berkus
                                     PostgreSQL Experts Inc.
                                     http://www.pgexperts.com