Merge branch 'nik-pg-config-additions' into 'master'

anatolystansler · anatolystansler · commit c015cb182f92 · 2020-02-26T14:03:54.000Z
feat: PG config improvements

See merge request postgres-ai/database-lab!80
diff --git a/configs/postgres/postgresql.conf b/configs/postgres/postgresql.conf
@@ -14,6 +14,12 @@
 #logging_collector
 #log_directory
 
+# Load pg_stat_statements and auto_explain for query analysis
+shared_preload_libraries = 'pg_stat_statements, auto_explain'
+
+# Avoid running autovacuum in the "transaction ID wraparound prevention" mode
+autovacuum_freeze_max_age = 1000000000
+
 listen_addresses = '*'
 
 log_destination = 'stderr'
@@ -24,7 +30,9 @@ log_connections = on
 ## If you want to have more clones use a lower value.
 shared_buffers = '1GB'
 
-# detect idle clones
+# To be able to detect idle clones, we need to log all queries.
+# We are going to do so with duration.
+# TODO: switch to "auto_explain.log_min_duration = 0" instead (set log_min_duration_statement = -1)
 log_min_duration_statement = 0
 log_statement = 'none'
 log_timezone = 'Etc/UTC'
