Re: [PERFORM] Very slow (2 tuples/second) sequential scan after bulk insert; speed returns to ~500 tuples/second after commit

Heikki Linnakangas wrote:

> I couldn't let this case go, so I wrote a patch. I replaced the linked
> list with an array that's enlarged at AtSubCommit_childXids when
> necessary.

Do you still need to palloc the return value from
xactGetCommittedChildren?  Perhaps you can save the palloc/memcpy/pfree
and just return the pointer to the array already in memory?

Not that it'll any much of a performance impact, but just for
cleanliness :-)

--
Alvaro Herrera                                http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support