Percona Configuration for Drupal 7

.my.cnf

[mysql]

# CLIENT #
port                           = 3306

[mysqld]

# GENERAL #
user                           = mysql

# MyISAM #
key_buffer_size                = 32M
myisam_recover                 = FORCE,BACKUP

# SAFETY #
max_allowed_packet             = 64M
max_connect_errors             = 1000000

# BINARY LOGGING #
expire_logs_days               = 14
sync_binlog                    = 1

# CACHES AND LIMITS #
tmp_table_size                 = 32M
max_heap_table_size            = 32M
query_cache_type               = 0
query_cache_size               = 0
max_connections                = 500
thread_cache_size              = 50
open_files_limit               = 65535
table_definition_cache         = 4096
table_open_cache               = 4096

# INNODB #
innodb_flush_method            = O_DIRECT
innodb_log_files_in_group      = 2
innodb_log_file_size           = 256M
innodb_flush_log_at_trx_commit = 1
innodb_file_per_table          = 1
innodb_buffer_pool_size        = 4G

[mysqld_safe]
open_files_limit                = 8192