A device and method for adjusting incremental time slice in a credit scheduler

Abstract

The invention discloses an increment time slice adjustment framework and method in a CREDIT scheduler. An interrupt decision making information maintaining device is responsible for maintaining history interrupt decision making information, and an increment time slice adaptive adjustment device collects data information maintained in the interrupt decision making information maintaining device in a timing mode, adjusts history information in cooperation with an increment time slice and dynamically calculates a new increment time slice. If the newly-calculated increment time slice is different from the original increment time slice, the CREDIT scheduler is informed to update the increment time slice. As an extension of an original time slice mechanism, the increment time slice dynamically maintains a non-negative value to increase the length of the original time slice. The increment time slice mechanism is built on a virtual interrupt independent decision making mechanism, and therefore the length of the time slice can be increased on the premise that the I / O performance of a virtual machine is not influenced.

Description

technical field [0001] The present invention relates to the fields of system virtualization, virtual interrupt processing, and virtual machine scheduler design, and in particular, to an incremental time slice adjustment device and method based on interrupt binding decision support in a CREDIT scheduler, which is used to solve the problem caused by the scheduler Frequent context switching, loss of physical computing resources, and long interrupt response processing delays caused by medium time slice length settings. Background technique [0002] System virtualization and related technologies are developing rapidly in the industry. Virtualization technology realizes the integration of computing resources and storage resources by virtualizing one or more relatively powerful physical servers into multiple small and medium-sized computers with relatively ordinary performance. Under the premise of centralized management, redistribution and maintenance of the integrated physical r...

AI Technical Summary

Problems solved by technology

This trade-off situation makes the length of the time slice somewhat controversial in design, and cannot meet the requirements of fast interrupt response and high resource utilization at the same time.

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