MySQL性能优化之Open_Table配置参数的合理配置建议

mysql> show global status like 'open%tables%'; 
+---------------+-------+ 
| Variable_name | Value | 
+---------------+-------+ 
| Open_tables   | 919   | 
| Opened_tables | 1951  | 
+---------------+-------+

mysql> show variables like 'table_cache'; 
+---------------+-------+ 
| Variable_name | Value | 
+---------------+-------+ 
| table_cache   | 2048  | 
+---------------+-------+

Open_tables / Opened_tables * 100% >= 85% 
Open_tables / table_cache * 100%