I am attaching a new version of the patch for consideration in the current commit fest.
Relative to the one I submitted on 25 June in BAY175-W412FF89303686022A9F16AA3190@phx.gbl
the method for handling aio completion using sigevent has been re-written to use
signals exclusively rather than a composite of signals and LWlocks,
and this has fixed the problem I mentioned before with the LWlock method.
More details are in postgresql-prefetching-asyncio.README
(search for
"Checking AIO Completion"
)
I also have worked my benchmark database and one application into a publishable state.
However, the database is in the form of a compressed pg_dump and is around
218 MB in size. I was hoping to come up with a generation program to load it
but have not had the time for that. Is there some place on postgresql.org for
such a large file? If not I will try to think of some place for it.
John Lumby
