every execute of 'pg_logical_slot_get_changes' is logged by
2014-12-23 11:41:53 EST STATEMENT: SELECT * FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL); 2014-12-23 11:42:21 EST LOG: starting logical decoding for slot "regression_slot" 2014-12-23 11:42:21 EST DETAIL: streaming transactions committing after A/4E026FD8, reading WAL from A/4E026ED0
logs settings are almost default:
postgres=# select name, setting from pg_settings where name like ('log%'); name | setting -----------------------------+-------------------------------- log_autovacuum_min_duration | -1 log_checkpoints | off log_connections | off log_destination | stderr log_directory | pg_log log_disconnections | off log_duration | off log_error_verbosity | default log_executor_stats | off log_file_mode | 0600 log_filename | postgresql-%Y-%m-%d_%H%M%S.log log_hostname | off log_line_prefix | %t log_lock_waits | off log_min_duration_statement | -1 log_min_error_statement | error log_min_messages | warning log_parser_stats | off log_planner_stats | off log_rotation_age | 1440 log_rotation_size | 10240 log_statement | none log_statement_stats | off log_temp_files | -1 log_timezone | US/Eastern log_truncate_on_rotation | off logging_collector | off (27 rows)