| 术语 | virtual storage interrupt(VSI) |
| 释义 | virtual storage interrupt(VSI) 虚存中断；［虚储存岔断］ An interrupt in the execution of a program caused by its referencing a page or segment that is not in primary storage. Following the VSI, system routines locate the required page/segment in secondary storage, locate a place for it in primary storage, read it into primary storage, and adjust table entries to indicate its new location. When a VSI occurs, instruction execution is commonly passed to another program. 程序运行时的一种中断，由于访问不在主存中的一个页或段所引起。在VS I之后，系统例行程序在辅存中找到所需页段，并为其在主存中找到适当的空间，将所需页 段读进主存，然后修改表项以指出它的新地址。当VSI发生时，通常将指令执行转到另一个 程序。 参阅discard， thrashing。 |
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