Snippet of my.cnf that makes tests 30% faster

my.cnf

# To my understanding, these settings make mysql slightly less durable/reliable, but in ways
# that don't really affect tests.

[mysqld]
# Don't flush log after transactions
innodb_flush_log_at_trx_commit = 0
# Don't sync binlog (it still gets written, but faster)
sync_binlog = 0
# Use a faster, less durable method to sync the DB.
innodb_flush_method = O_DIRECT