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Harmonia: A globally coordinated garbage collector for arrays of Solid-State Drives

Youngjae Kim, Sarp Oral, Galen M. Shipman, Junghee Lee, David A. Dillow, Feiyi Wang
2011 2011 IEEE 27th Symposium on Mass Storage Systems and Technologies (MSST)  
This paper presents Harmonia, a Global Garbage Collection (GGC) mechanism to improve response times and reduce performance variability for a RAID array of SSDs.  ...  Solid-State Drives (SSDs) offer significant performance improvements over hard disk drives (HDD) on a number of workloads.  ...  Thus, in this paper, we propose a RAID-level garbage collector, called Harmonia that can globally coordinate local GC operations in the array of SSDs.  ... 
doi:10.1109/msst.2011.5937224 dblp:conf/mss/KimOSLDW11 fatcat:cxfksqeasrcrpbbqh6buztmfsi

Coordinating Garbage Collectionfor Arrays of Solid-State Drives

Youngjae Kim, Junghee Lee, Sarp Oral, David A. Dillow, Feiyi Wang, Galen M. Shipman
2014 IEEE transactions on computers  
Although solid-state drives (SSDs) offer significant performance improvements over hard disk drives (HDDs) for a number of workloads, they can exhibit substantial variance in request latency and throughput  ...  We propose a global garbage collection (GGC) mechanism to improve response times and reduce performance variability for a RAID of SSDs.  ...  ACKNOWLEDGMENTS The authors would like to specially thank Doug Reitz for his detailed comments and proof-reading which helped us improve the quality of this paper.  ... 
doi:10.1109/tc.2012.256 fatcat:yfj5rjzrpfaxvaeatko6t5gwku

Astrophysics in 2004

Virginia Trimble, Markus Aschwanden
2005 Publications of the Astronomical Society of the Pacific  
In this 14th edition of ApXX, 1 we bring you the Sun ( § 2) and Stars ( § 4), the Moon and Planets ( § 3), a truly binary pulsar ( § 5), a kinematic apology ( § 6), the whole universe ( § § 7 and 8), reconsideration  ...  In this 14th edition of ApXX, 1 we bring you the Sun ( § 2) and Stars ( § 4), the Moon and Planets ( § 3), a truly binary pulsar ( § 5), a kinematic apology ( § 6), the whole universe ( § § 7 and 8), reconsideration  ...  From a PPARC Annual Report list of abbreviations: SKA p Square Millimetre Array (with, we fear, ominous implications for the budget).  ... 
doi:10.1086/429117 fatcat:qwqkgv5icvhbnewnmbzchlzisa