Abstract
With the rapid development of e-business, large volume of business processes need to be handled in a constrained time. There is always a security issue related to on-time completion in many applications in the economic fields. So, how to effectively manage and organize business processes became very important. By using cloud computing, instance-intensive processes can be handled more effectively by applying just-right virtual machines. Hence, the management of cloud resources became an important issue that many researchers focus on to fully utilize the advantage of cloud. In this paper, we mainly discuss the queuing theory and put forward our novel dynamic process scheduling model based on queuing theory, which is named M/G/k/l-P for business processes. This model can solve the issue of allocating appropriate number of cloud resources based on the number of tasks and execution stages to ensure whether the numbers of cloud resources are sufficient and adequate or not, which can improve the security issue for business process. The service discipline in our model can provide a dynamic process by setting different priorities to improve the experience of users. Evaluations prove that the queuing model of M/G/k/l-P can work very well for business workflow scheduling.
Highlights
Business processes are the series of interactions between businesses and their users, vendors, and other related partners [1]
We mainly demonstrate our simulations to test the parameter of waiting time in this part. e other parameter we focus on is response time which depends on the tasks’ arrival time, waiting time, and service time in the queuing system. e values of waiting time are expected to be small enough to satisfy the requirements of security exchange system. en, these parameters will be carried out in different experiments and the contrast methods are First Come First Serve (FCFS) queue systems [35] and dynamic programming (DP) algorithm [36]
As we described in our queuing model M/G/k/l-P, service discipline is an important factor that will significantly influence the experience of users. e default service discipline is FCFS and we set certain priorities to improve the Quality of Service (QoS) of users
Summary
Business processes are the series of interactions between businesses and their users, vendors, and other related partners [1]. A typical motivating instance-intensive business example is security exchange in the stock market that involves a large number of transactions between different organizations, and each of them is a relatively short workflow instance with only a few steps [7]. Ere are a large number of tasks that need to be scheduled in business workflows, which are convenient to operate virtual machines as servers by queuing theory in cloud environment. Our model M/G/k/l-P applies cloud resources in a dynamic process, which can dynamically manage the number of virtual machines based on service time distribution so there is no much waste.
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