Re: Relation extension scalability

On Fri, Apr 17, 2015 at 11:19 AM, Qingqing Zhou
<zhouqq.postgres@gmail.com> wrote:
>
> Most commercial database employs a DMS storage model, where it manages
> object mapping and freespace itself. So different objects are sharing
> storage within several files. Surely it has historic reasons, but it
> has several advantages over current model:
> - remove fd pressure
> - remove double buffering (by introducing ADIO)
> - controlled layout and access pattern (sequential and read-ahead)
> - better quota management
> - performance potentially better
>
> Considering platforms supported and the stableness period needed, we
> shall support both current storage model and DMS model. I will stop
> here to see if this deserves further discussion.
>

Sorry, it might considered double-posting here but I am wondering have
we ever discussed this before? If we already have some conclusions on
this, could anyone share me a link?

Thanks,
Qingqing