On Fri, Apr 17, 2015 at 11:19 AM, Qingqing Zhou <zhouqq.postg...@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 -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
