{"139221":{"#nid":"139221","#data":{"type":"event","title":"Ph.D. Defense of Dissertation: Hyojun Kim","body":[{"value":"\u003Cp\u003E\u003Cstrong\u003EPh.D. Defense of Dissertation Announcement\u003C\/strong\u003E\u003Cbr \/\u003E\u003Cbr \/\u003ETitle: \u003Cstrong\u003EInformed Storage Management for Mobile Platforms\u003C\/strong\u003E\u003Cbr \/\u003E\u003Cbr \/\u003EHyojun Kim \u003Cbr \/\u003ESchool of Computer Science\u003C\/p\u003E\u003Cp\u003ECollege of Computing\u003C\/p\u003E\u003Cp\u003EGeorgia Institute of Technology\u003Cbr \/\u003E\u003Cbr \/\u003EDate: July 12 (THU), 2012\u003Cbr \/\u003ETime: 2:00pm - 4:00pm (in EDT)\u003Cbr \/\u003ELocation: KACB 1116 East\u003Cbr \/\u003E\u003Cbr \/\u003E\u003Cstrong\u003ECommittee:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EDr. Umakishore Ramachandran (Advisor, CoC, GATECH)\u003C\/li\u003E\u003Cli\u003EDr. Ling Liu (CoC, GATECH)\u003C\/li\u003E\u003Cli\u003EDr. Marilyn Wolf (ECE\/CoC, GATECH)\u003C\/li\u003E\u003Cli\u003EDr. Moinuddin K. Qureshi (ECE, GATECH)\u003C\/li\u003E\u003Cli\u003EDr. Remzi H. Arpaci-Dusseau (CS, University of Wisconsin\u2013Madison)\u003C\/li\u003E\u003C\/ul\u003E\u003Cp\u003E\u003Cbr \/\u003E\u003Cstrong\u003EAbstract:\u003C\/strong\u003E\u003Cbr \/\u003ESmartphones are not just ordinary phones; they are being used as mobile platforms for serving the computing needs of a significant segment of the user community.\u0026nbsp; We believe that storage in smartphones is an Achilles\u0027 heel to achieving the full performance potential of smartphones for meeting the future computing needs of the user community that is starting to become more heavily dependent on mobile platforms.\u0026nbsp; The poor performance of storage in smartphones can be attributed to the fact that smartphones typically employ flash storage, and the OS storage stack is not optimized to deal with the performance quirks of such storage.\u003Cbr \/\u003E\u003Cbr \/\u003EI have proposed multiple storage software solutions to handle the durability issue and to improve the performance of Flash storage. There are always design tradeoffs involved in building software systems. RAM based write buffering can enhance storage performance, but sacrifices reliability. Redundancy (via replication) can improve data availability, but it has implications for data consistency. Log-structured design to combat the \u201csmall write\u201d problem solves the random write issue in Flash storages, but introduces overhead for maintaining mapping information between logical and physical blocks.\u003Cbr \/\u003E\u003Cbr \/\u003EIn this proposed research, entitled Informed Storage Management (ISM), I aim at providing a dynamic decision-making framework for system design, specifically targeted to storage systems on mobile platforms. The goal of ISM is maximizing the performance benefits while minimizing the side effects of the design choice. As a concrete example of ISM, we provide mechanisms along three axes, namely, type, temporal, and spatial for selectively supporting write-back buffering, which can be used judiciously by the upper layers of the operating system.\u0026nbsp; We implement and evaluate our solution on a real Android smartphone, and demonstrate significant performance gains for everyday apps on such platforms.\u003C\/p\u003E","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"Informed Storage Management for Mobile Platforms"}],"uid":"1","created_gmt":"2012-07-09 09:12:31","changed_gmt":"2016-10-08 01:59:12","author":"Jupiter","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2012-07-12T15:00:00-04:00","event_time_end":"2012-07-12T17:00:00-04:00","event_time_end_last":"2012-07-12T17:00:00-04:00","gmt_time_start":"2012-07-12 19:00:00","gmt_time_end":"2012-07-12 21:00:00","gmt_time_end_last":"2012-07-12 21:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"groups":[{"id":"47223","name":"College of Computing"},{"id":"50875","name":"School of Computer Science"}],"categories":[],"keywords":[],"core_research_areas":[],"news_room_topics":[],"event_categories":[],"invited_audience":[],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[{"value":"\u003Cp\u003E\u003Ca href=\u0022mailto:zartoven@gatech.edu\u0022\u003EHyojun Kim \u003C\/a\u003E\u003C\/p\u003E","format":"limited_html"}],"email":[],"slides":[],"orientation":[],"userdata":""}}}