-# host: Host name
-# dbname: Default database name
-# user: DB user
-# password: DB password
-# type: "mysql" or "pgsql"
-# load: ratio of DB_SLAVE load, must be >=0, the sum of all loads must be >0
-# flags: bit field
-# DBO_DEFAULT -- turns on DBO_TRX only if !$wgCommandLineMode (recommended)
-# DBO_DEBUG -- equivalent of $wgDebugDumpSql
-# DBO_TRX -- wrap entire request in a transaction
-# DBO_IGNORE -- ignore errors (not useful in LocalSettings.php)
-# DBO_NOBUFFER -- turn off buffering (not useful in LocalSettings.php)
+# host: Host name
+# dbname: Default database name
+# user: DB user
+# password: DB password
+# type: "mysql" or "pgsql"
+# load: ratio of DB_SLAVE load, must be >=0, the sum of all loads must be >0
+# groupLoads: array of load ratios, the key is the query group name. A query may belong
+# to several groups, the most specific group defined here is used.
+#
+# flags: bit field
+# DBO_DEFAULT -- turns on DBO_TRX only if !$wgCommandLineMode (recommended)
+# DBO_DEBUG -- equivalent of $wgDebugDumpSql
+# DBO_TRX -- wrap entire request in a transaction
+# DBO_IGNORE -- ignore errors (not useful in LocalSettings.php)
+# DBO_NOBUFFER -- turn off buffering (not useful in LocalSettings.php)