MARACAS: a real-time multicore VCPU scheduling framework
MetadataShow full item record
Citation (published version)Ying Ye, Richard West, Jingyi Zhang, Zhuoqun Cheng. 2016. "MARACAS: A Real-Time Multicore VCPU Scheduling Framework." PROCEEDINGS OF 2016 IEEE REAL-TIME SYSTEMS SYMPOSIUM (RTSS). 37th IEEE Real-Time Systems Symposium (RTSS). Porto, PORTUGAL, 2016-11-29 - 2016-12-02
This paper describes a multicore scheduling and load-balancing framework called MARACAS, to address shared cache and memory bus contention. It builds upon prior work centered around the concept of virtual CPU (VCPU) scheduling. Threads are associated with VCPUs that have periodically replenished time budgets. VCPUs are guaranteed to receive their periodic budgets even if they are migrated between cores. A load balancing algorithm ensures VCPUs are mapped to cores to fairly distribute surplus CPU cycles, after ensuring VCPU timing guarantees. MARACAS uses surplus cycles to throttle the execution of threads running on specific cores when memory contention exceeds a certain threshold. This enables threads on other cores to make better progress without interference from co-runners. Our scheduling framework features a novel memory-aware scheduling approach that uses performance counters to derive an average memory request latency. We show that latency-based memory throttling is more effective than rate-based memory access control in reducing bus contention. MARACAS also supports cache-aware scheduling and migration using page recoloring to improve performance isolation amongst VCPUs. Experiments show how MARACAS reduces multicore resource contention, leading to improved task progress.
Showing items related by title, author, creator and subject.
Media consumption and creation in attitudes toward and knowledge of inflammatory bowel disease: web-based survey Groshek, Jacob; Basil, Miles; Guo, Ling; Parker Ward, Sarah; Farraye, Francis A.; Reich, Jason (2017-12-08)BACKGROUND: Inflammatory bowel disease (IBD) is a chronic gastrointestinal condition affecting over 5 million people globally and 1.6 million in the United States but currently lacks a precisely determined cause or cure. ...
Gacs, Peter (CAMBRIDGE UNIV PRESS, 2000-09-01)Consider the integer lattice L = ℤ2. For some m [ges ] 4, let us colour each column of this lattice independently and uniformly with one of m colours. We do the same for the rows, independently of the columns. A point of ...
Biological hot spots and the accumulation of marine dissolved organic matter in a highly productive ocean margin Shen, Yuan; Fichot, Cedric G.; Liang, Sheng-Kang; Benner, Ronald (WILEY-BLACKWELL, 2016-07-01)Concentrations of dissolved organic carbon (DOC) and major biochemicals (amino acids and carbohydrates) were measured during five cruises (2009–2010) to the Louisiana margin in the northern Gulf of Mexico. Concentrations ...