Skip to Main Content
This paper presents an comparison on interactivity of three Linux schedulers: O (1), CFS and MIOS , in an embedded system. We have ported the O (1) and MIOS into Linux 2.6.32, and done the test in this framework. Different experiments in both high workload and low workload are done in a 0.16 millisecond accuracy. The result shows that a) CFS is not the best in interactivity comparing with O(1) and MIOS; b) CFS is more fair even in high workload; c) O(1) and MIOS differ very slightly on interactivity for sub-millisecond level tasks; d) MIOS works better on scalability testing of hackbench than the other two. The experimental result shows the acceptable interactivity on these schedulers, but possible enhancements still can make, even on MIOS.