innodb_flush_log_at_trx_commit = 2

config/my.cnf

@@ -63,6 +63,8 @@ table_definition_cache  = 800
 max_heap_table_size     = 128M
 tmp_table_size          = 128M
 innodb_use_native_aio   = 1
+# sync for every sec. not for every commit.
+innodb_flush_log_at_trx_commit = 2
 
 #
 # * Query Cache Configuration