Abstract
In this paper, a vCPU (virtual CPU) migration mechanism in order to improve real-time responsiveness in a GPOS (General Purpose Operating System) is presented in the embedded multicore virtualization platform and can also be applied to CPS environment. In a GPOS/RTOS (Real Time Operating System) virtualization system nowadays, tasks in GPOS, however, also need some degree of real-time services from the system. Unfortunately, in a traditional virtualization platform, a virtualization layer always gives RTOS vCPU higher priority and preempts the execution of GPOS. Therefore, a kernel module in the GPOS is added in our virtualization system to export and boost a GPOS vCPU contexts which needs higher priority against RTOS vCPU. At the same time, in order not to sacrifice the performance of the victim RTOS vCPU, a vCPU migration mechanism is added to our virtualization system, and migrates the RTOS vCPU to a low-loading CPU when this vCPU is preempted. Performance improvement of GPOS's real-time responsiveness is also given while a detailed analysis of the overhead of the RTOS vCPU is performed as well.
| Original language | English |
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| Pages | 306-309 |
| Number of pages | 4 |
| DOIs | |
| Publication status | Published - 2013 Jan 1 |
| Event | 2013 IEEE 19th International Conference on Embedded and Real-Time Computing Systems and Applications, RTCSA 2013 - Taipei, Taiwan, Province of China Duration: 2013 Aug 19 → 2013 Aug 21 |
Conference
| Conference | 2013 IEEE 19th International Conference on Embedded and Real-Time Computing Systems and Applications, RTCSA 2013 |
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| Country/Territory | Taiwan, Province of China |
| City | Taipei |
| Period | 13/8/19 → 13/8/21 |
ASJC Scopus subject areas
- Computer Science Applications
- Software