On Thu, Jan 1, 2015 at 10:40:53AM +0530, Amit Kapila wrote: > Good question, I think there might be some impact due to that, but in > general for page level compression still there will be much more to > compress. > > In general, I think this idea has merit with respect to compressible data, > and to save for the cases where it will not perform well, there is a on/off > switch for this feature and in future if PostgreSQL has some better > compression method, we can consider the same as well. One thing > that we need to think is whether user's can decide with ease when to > enable this global switch.
Yes, that is the crux of my concern. I am worried about someone who assumes compressions == good, and then enables it. If we can't clearly know when it is good, it is even harder for users to know. If we think it isn't generally useful until a new compression algorithm is used, perhaps we need to wait until the we implement this. -- Bruce Momjian <br...@momjian.us> http://momjian.us EnterpriseDB http://enterprisedb.com + Everyone has their own god. + -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
