disk sort routine 磁盘分类程序
disk sort merge routine 磁盘分类合并程序
variable length record disk sort [计] 可变长度记录磁盘分类
disk sort-merge routine 磁盘分类合并程序
If the size of the data to sort is too large, the data must go to temporary files on disk and be sorted again.
如果要排序的数据太大，那么数据就必须保存到磁盘上的临时文件中，并再次进行排序。
If the sort will fit in memory, it will be very fast; otherwise, it overflows to disk and will be much slower.
如果排序可在内存中进行，它将非常快；否则，它会溢出到磁盘，而且慢得多。
For example, if there were an excessive amount of sorting such that the sort heap spilled to disk, performance would suffer.
比如说，如果出现大量排序操作，导致排序堆被溢出到磁盘上，那么性能就会受到影响。
应用推荐