Like the previous optimizations, this optimization collects related data on the disk to optimize for sequentialRead optimization.
与前面其他优化一样,这个优化在磁盘上收集相关的数据,以实现相邻读优化。
2
DB2 row compression features can decrease disk storage requirements while at the same time improve sequentialread access of large queries which perform full table scans.
DB 2行压缩功能可以减少磁盘存储需求,同时改进执行全表扫描的大量查询的顺序读取访问。
3
Some important JFS2-specific file system performance enhancements include sequential page read ahead and sequential and random write behind.