On Thu, Jan 5, 2012 at 7:12 PM, Robert Haas <robertmh...@gmail.com> wrote: > On Thu, Jan 5, 2012 at 11:10 AM, Simon Riggs <si...@2ndquadrant.com> wrote: >> Let's commit the change to 32. > > I would like to do that, but I think we need to at least figure out a > way to provide an escape hatch for people without much shared memory. > We could do that, perhaps, by using a formula like this: > > 1 CLOG buffer per 128MB of shared_buffers, with a minimum of 8 and a > maximum of 32
We're talking about an extra 192KB or thereabouts and Clog buffers will only be the size of subtrans when we've finished. If you want to have a special low-memory option, then it would need to include many more things than clog buffers. Let's just use a constant value for clog buffers until the low-memory patch arrives. -- Simon Riggs http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
