数据归档，冷热数据分离

1.高压缩比，高写入性能
2.在线创建索引和字段
3.在线事务
4.支持索引同步

1.yum install jemalloc -y

2.vim /etc/my.cnf   #添加如下
[mysqld_safe]
malloc-lib=/usr/lib64/libjemalloc.so.1

3.
echo never >/sys/kernel/mm/transparent_hugepage/enabled 
echo never >/sys/kernel/mm/transparent_hugepage/defrag

4.yum install Percona-Server-tokudb-57.x86_64

5.启动引擎
ps-admin --enable -uroot -p

6.重启mysql服务
service mysql restart

7.
ps-admin --enable -uroot -p

8.查看引擎 
执行mysql -u root -p，登录mysql，执行show engines