Zdenek Kotala <Zdenek.Kotala@Sun.COM> writes:
> Andrew Dunstan wrote:
>> Or give better performance?
> Yes. List of chunks is stored as linked list and for some operation
> (e.g. expand) are all chunks opened and their size is checked. On big
> tables it takes some time. For example if you have 1TB big table and you
> want to add new block you must go and open all 1024 files.
Indeed, but that would be far more effectively addressed by fixing the
*other* code path that doesn't segment at all (the
LET_OS_MANAGE_FILESIZE option, which is most likely broken these days
for lack of testing). I don't see the point of a halfway measure like
increasing RELSEG_SIZE.
regards, tom lane