pgbouncer and postgresql 9.0
Just ran into the issue with "Pooler Error: Unknown startup parameter" when connecting to PostgreSQL 9.0 using pgbouncer. A quick search turned up the following discussion pointing out that adding ignore_startup_parameters = application_name resolves the issue.
pgbouncer: stats entries in syslog
Got a little confused interpreting the stats entries from pgbouncer in my syslog. For a second didn't realize it was the stat period average shown (as described in the usage docs). Silly me. :)