| 摘要 |
PROBLEM TO BE SOLVED: To reduce the occurrence frequency of missing page exception in a computer system in which distribution of CPU resources is managed. SOLUTION: The device includes: a virtual machine monitoring means which monitors the state of each virtual machine and stores an inverse of CPU distribution rate of each virtual machine; a counter initial value setting means which obtains the inverse of CPU distribution rate of a virtual machine in which missing page occurs to calculate a product with default or a constant multiple of the product, and stores it as a counter initial value of a page-in page; and a working set management means which inspects for reference or update of pages contained in a working set at fixed intervals, obtains the inverse of CPU distribution rate of a virtual machine corresponding to a referred or updated page, stores its product with default or the constant multiple of the product as the counter initial value of this page, subtracts a constant value from the counter of a page which is not referred or updated, and pages out this page when the counter reaches a predetermined value. COPYRIGHT: (C)2010,JPO&INPIT
|
