Optimization method of I/O (input/output) performance of virtual machine
An optimization method and virtual machine technology, applied in software simulation/interpretation/simulation, program control devices, etc., can solve redundancy and other problems, achieve the effects of reducing overhead, reducing clock interruption frequency, and improving performance
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[0027] Below in conjunction with specific embodiment, the present invention is further described:
[0028] A method for optimizing the I / O performance of a virtual machine, the optimization method reduces the clock interrupt frequency of the virtual machine by merging continuous I / O instructions in the guest operating system, thereby reducing the overhead of environment switching, and by eliminating the guest operating system Redundant operations in the virtual machine can only perform necessary operations, thereby improving system performance.
[0029] In the disk drive of the guest operating system, there are some code segments that include continuous I / O instructions. Whenever an I / O instruction is executed, it will cause the virtual machine to fall into it, making this piece of code fall into it continuously. Therefore, these instructions can be combined into one operation, which is once trapped in KVM for processing. We adopted the method of static merging, replacing a ...
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