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Syst."],"published-print":{"date-parts":[[2007,12]]},"abstract":"<jats:p>Contemporary processors support dynamic voltage scaling (DVS) to reduce power consumption by varying processor voltage\/frequency dynamically. We develop power-aware feedback--DVS algorithms for hard real-time systems that adapt to dynamically changing workloads. The algorithms lower execution speed while guaranteeing timing constraints. We study energy consumption for synchronous and asynchronous DVS switching on a PowerPC board. Energy, measured via data acquisition, is reduced up to 70% over na\u00efve DVS for our feedback scheme with 24% peak savings over previous algorithms. These results, albeit differing in quantity, confirm trends observed under simulation. They are the first of their kind on an embedded board.<\/jats:p>","DOI":"10.1145\/1324969.1324972","type":"journal-article","created":{"date-parts":[[2008,1,18]],"date-time":"2008-01-18T18:45:29Z","timestamp":1200681929000},"page":"1-26","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":10,"title":["Exploiting synchronous and asynchronous DVS for feedback EDF scheduling on an embedded platform"],"prefix":"10.1145","volume":"7","author":[{"given":"Yifan","family":"Zhu","sequence":"first","affiliation":[{"name":"North Carolina State University, Raleigh, North Carolina"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Frank","family":"Mueller","sequence":"additional","affiliation":[{"name":"North Carolina State University, Raleigh, North Carolina"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"320","published-online":{"date-parts":[[2007,12,12]]},"reference":[{"volume-title":"Proceedings of the IBM Pa &equals; c2 Conference.","author":"Anantaraman A.","key":"e_1_2_1_1_1"},{"volume-title":"Proceedings of the 11th IEEE Real-Time and Embedded Technology and Applications Symposium.","author":"Aydin H.","key":"e_1_2_1_2_1"},{"volume-title":"IEEE Real-Time Systems Symposium.","author":"Aydin H.","key":"e_1_2_1_3_1"},{"key":"e_1_2_1_4_1","doi-asserted-by":"publisher","DOI":"10.1109\/TC.2004.1275298"},{"volume-title":"IEEE International SOC Conference.","author":"Brock B.","key":"e_1_2_1_5_1"},{"key":"e_1_2_1_6_1","doi-asserted-by":"publisher","DOI":"10.1109\/4.126534"},{"key":"e_1_2_1_7_1","doi-asserted-by":"publisher","DOI":"10.1109\/TSE.1989.559777"},{"key":"e_1_2_1_8_1","doi-asserted-by":"publisher","DOI":"10.1145\/513829.513865"},{"volume-title":"Feedback Control of Dynamic Systems, 4 ed","author":"Franklin G.","key":"e_1_2_1_9_1"},{"key":"e_1_2_1_10_1","doi-asserted-by":"publisher","DOI":"10.1145\/215530.215546"},{"key":"e_1_2_1_11_1","doi-asserted-by":"publisher","DOI":"10.1145\/383082.383092"},{"volume-title":"Symp. on Operating Systems Design and Implementation.","author":"Grunwald D.","key":"e_1_2_1_12_1"},{"key":"e_1_2_1_13_1","unstructured":"IBM and Software M. Dynamic power management for embedded systems. White paper.  IBM and Software M. Dynamic power management for embedded systems. 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