On Thu, Aug 17, 2017 at 12:06 AM, Dilip Kumar <dilipbal...@gmail.com> wrote: > I have attempted a very simple POC with this approach just to see how > many lossy pages we can save if we lossify all the pages falling in > the same chunk first, before moving to the next page. I have taken > some data on TPCH scale 20 with different work_mem (only calculated > lossy pages did not test performance). I did not see a significant > reduction in lossy pages. (POC patch attached with the mail in case > someone is interested to test or more experiment).
That's not an impressive savings. Maybe this approach is a dud, and we should go back to just tackling the planner end of it. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
