Performance Modeling towards Interrupt System of Virtualized Cryptography Device

For the problem that the large number of interrupts leads to decrease of the performance of the single-root I/O virtualization cryptography device, we establish an M/M/1 queueing model with preemption priority based on the queuing theory towards interrupt system of virtualized cryptography device. Specifically, we simplify the model taking the average value of interrupt request interval. We find that the long interrupt transmission time and the large interrupt request frequency are the main factors which lower the performance of interrupt system of virtualized cryptography device. In particular, we verify the effectiveness of the model and the correctness of the conclusion by MATLAB simulation and experimental testing. The results show that we can get the system performance index through analyzing the model quantitatively. What’s more, this model helps guide the optimization of interrupt system of virtualized cryptography device.