You can use LOAD DATA INFILE to populate the table
CREATE TABLE performance_log (
access_time datetime DEFAULT NULL,
remote_address varchar(25) DEFAULT NULL,
bytes_in bigint(20) unsigned DEFAULT NULL,
bytes_out bigint(20) unsigned DEFAULT NULL,
service_time bigint(20) DEFAULT NULL,
file varchar(100) DEFAULT NULL,
protocol char(10) DEFAULT NULL,
action char(10) DEFAULT NULL,
query_string text,
status smallint(5) unsigned DEFAULT NULL,
virtualhost varchar(50) DEFAULT NULL,
total_cpu_time float DEFAULT NULL,
cpu_user float DEFAULT NULL,
cpu_system float DEFAULT NULL,
memory_usage int(10) unsigned DEFAULT NULL,
request_id char(40) DEFAULT NULL,
SESSION_uname varchar(25) DEFAULT NULL,
session_id char(32) DEFAULT NULL,
mysql_query_count mediumint(9) DEFAULT NULL,
mysql_prepare_count mediumint(9) DEFAULT NULL,
mysql_prepare_time float DEFAULT NULL,
mysql_connection_count mediumint(9) DEFAULT NULL,
mysql_query_exec_time float DEFAULT NULL,
mysql_connect_time float DEFAULT NULL,
mysql_deadlock_count mediumint(9) DEFAULT NULL,
memcache_connection_count mediumint(9) DEFAULT NULL,
memcache_connect_time mediumint(9) DEFAULT NULL,
memcache_delete_count mediumint(9) DEFAULT NULL,
memcache_delete_time float DEFAULT NULL,
memcache_miss_count mediumint(9) DEFAULT NULL,
memcache_get_count mediumint(9) DEFAULT NULL,
memcache_get_time float DEFAULT NULL,
memcache_set_count mediumint(9) DEFAULT NULL,
memcache_set_time float DEFAULT NULL,
memcache_add_count mediumint(9) DEFAULT NULL,
memcache_add_time float DEFAULT NULL,
memcache_replace_count mediumint(9) DEFAULT NULL,
memcache_replace_time float DEFAULT NULL,
memcache_increment_count mediumint(9) DEFAULT NULL,
memcache_increment_time float DEFAULT NULL,
memcache_decrement_count mediumint(9) DEFAULT NULL,
memcache_decrement_time float DEFAULT NULL
)