mysql/mariadb很慢，报错:InnoDB: ERROR: the age of the last checkpoint is

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