Hi, Currently the maximum for max_connections (+ bgworkers + autovacuum) is defined by #define MAX_BACKENDS 0x7fffff which unfortunately means that some things like buffer reference counts need a full integer to store references.
Since there's absolutely no sensible scenario for setting max_connections that high, I'd like to change the limit to 2^16, so we can use a uint16 in BufferDesc->refcount. Does anyone disagree? This clearly is 9.5 material, but I wanted to raise it early, since I plan to develop some stuff for 9.5 that'd depend on lowering it. Greetings, Andres Freund -- Andres Freund 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
