MySQL5.6 Innodb数据页 16K vs 8K性能对比测试
从MySQL5.6开始，一个新参数innodb_page_size可以设置Innodb数据页为8K,4K，默认为16K。这个参数在一开始初始化时就要加入my.cnf里，如果已经创建了表，再修改，启动MySQL会报错。
相关mysql视频教程推荐：《mysql教程》
下面我针对16K和8K做了一个压力测试。
硬件：R710，虚拟主机，72G内存，虚拟主机，6块300G、15000转做的RAID10，XFS分区。
my.cnf参数：
1.Sysbench参数（读写）：
sbtest表1亿条记录，文件大小24G。
下面是16K性能图：
下面是8K性能图：
结论：默认页16K，对CPU压力较小，平均在20% 8K页，CPU压力为30%~40%，但select吞吐量要高于16K
2.Sysbench参数（只读）：sbtest表1亿条记录，文件大小24G。
下面是16K和8K性能图：
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