Then as the number of virtual machines per host server increases, I/O problems start to develop.
然后随着每台主服务器上虚拟机数量的增加,就会出现I/O问题。
However, over-allocating free space may result in wasted DASD space, less data transferred per I/O, less efficient use of buffer pools and more pages to scan.
然而,过多地分配空余空间可能会产生浪费的 DASD 空间,导致每次 I/O 只能传输更少的数据,缓冲池的利用效率更低,并且要扫描更多的页。
Retrieve all characters sequentially (cost per character) o (1) o (1).
顺序检索所有字符(每个字符的开销)O (1) O (1)。
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