Is it better to use AUTOCOMMIT = 0 Is it better to use (for perfomance tuning) AUTOCOMMIT = 0 before bulk inserts of data in MySQL, if the insert query looks like 

INSERT INTO SomeTable (column1, column2) VALUES (val1,val2),(val3,val4),... ?
According to the documentation, AUTOCOMMIT should be turned off in InnoDB.

When importing data into InnoDB, turn off autocommit mode, because it performs a log flush to disk for every insert.
When doing bulk inserts into tables with auto-increment columns, set innodb_autoinc_lock_mode to 2 instead of the default value 1