Re: FSM patch - performance test

Heikki Linnakangas <heikki.linnakangas@enterprisedb.com> writes:
> Zdenek Kotala wrote:
>> My conclusion is that new implementation is about 8% slower in OLTP 
>> workload.

> Thanks. That's very disappointing :-(

One thing that jumped out at me is that you call FreeSpaceMapExtendRel
every time a rel is extended by even one block.  I admit I've not
studied the data structure in any detail yet, but surely most such calls
end up being a no-op?  Seems like some attention to making a fast path
for that case would be helpful.
        regards, tom lane