问题
mysql最新网络吞吐速度慢，到后台查看日志报错：
Version: '5.5.65-MariaDB' socket: '/var/lib/mysql/mysql.sock' port: 3306 MariaDB Server 201023 14:19:01 InnoDB: ERROR: the age of the last checkpoint is 9444086, InnoDB: which exceeds the log group capacity 9433498. InnoDB: If you are using big BLOB or TEXT rows, you must set the InnoDB: combined size of log files at least 10 times bigger than the InnoDB: largest such row. 201023 14:19:36 InnoDB: ERROR: the age of the last checkpoint is 9444401, InnoDB: which exceeds the log group capacity 9433498. InnoDB: If you are using big BLOB or TEXT rows, you must set the InnoDB: combined size of log files at least 10 times bigger than the InnoDB: largest such row. 201023 14:20:01 InnoDB: ERROR: the age of the last checkpoint is 9444693, InnoDB: which exceeds the log group capacity 9433498. InnoDB: If you are using big BLOB or TEXT rows, you must set the InnoDB: combined size of log files at least 10 times bigger than the InnoDB: largest such row. 201023 14:20:21 InnoDB: ERROR: the age of the last checkpoint is 9444414, InnoDB: which exceeds the log group capacity 9433498. InnoDB: If you are using big BLOB or TEXT rows, you must set the InnoDB: combined size of log files at least 10 times bigger than the
优化方法
1、在[mysqld]节点添加：
innodb_log_buffer_size = 32M innodb_buffer_pool_size = 3G innodb_log_file_size = 768M
2、停止服务
systemctl stop mariadb.service
2、删除日志
#切换到数据目录 cd /data/mysql rm -rf rm ib_logfile*
3、启动
systemctl start mariadb.service
参考：https://dba.stackexchange.com/questions/16510/mysql-innodb-innodb-error-the-age-of-the-last-checkpoint-is-innodb-which-exc