立即与支持人员聊天
与支持团队交流

Spotlight on Oracle 10.4 - Getting Started Guide

Welcome to Spotlight Install Spotlight Start Spotlight Spotlight on Oracle Spotlight on Oracle Data Guard Spotlight on Oracle RAC Spotlight on Unix Spotlight on Windows Spotlight on MySQL Troubleshooting: Connection Problems

Buffer Pool Hit Rate Alarm

The InnoDB storage engine maintains its own buffer pool for caching the data and indexes of its tables; this reduces the amount of I/O needed to access data from tables stored on disk.

The Buffer Pool Hit Rate alarm fires when the proportion of table data that can be found in the buffer pool drops below a specified threshold.

You may be able to improve the buffer pool hit rate by increasing the size of the buffer pool via the MySQL variable innodb_buffer_pool_size. The larger the size of this value, the less disk I/O is needed to access data in tables.

The MySQL Reference Manual suggests that, on a dedicated database server, you can set the pool size to be as high as 80% of the host's physical memory size. (A value that is TOO large may cause excessive paging in the operating system.)

 

Related Topics

相关文档

The document was helpful.

选择评级

I easily found the information I needed.

选择评级