TY - CHAP U1 - Konferenzveröffentlichung A1 - Hardock, Sergej A1 - Petrov, Ilia A1 - Gottstein, Robert A1 - Buchmann, Alejandro ED - Gustavo, Alonso T1 - NoFTL for real : databases on real native Flash storage T2 - Advances in database technology - EDBT 2015 : 18th International Conference on Extending Database Technology, Brussels, Belgium, March 23 - 27, 2015 : proceedings N2 - Flash SSDs are omnipresent as database storage. HDD replacement is seamless since Flash SSDs implement the same legacy hardware and software interfaces to enable backward compatibility. Yet, the price paid is high as backward compatibility masks the native behaviour, incurs significant complexity and decreases I/O performance, making it non-robust and unpredictable. Flash SSDs are black-boxes. Although DBMS have ample mechanisms to control hardware directly and utilize the performance potential of Flash memory, the legacy interfaces and black-box architecture of Flash devices prevent them from doing so. In this paper we demonstrate NoFTL, an approach that enables native Flash access and integrates parts of the Flashmanagement functionality into the DBMS yielding significant performance increase and simplification of the I/O stack. NoFTL is implemented on real hardware based on the OpenSSD research platform. The contributions of this paper include: (i) a description of the NoFTL native Flash storage architecture; (ii) its integration in Shore-MT and (iii) performance evaluation of NoFTL on a real Flash SSD and on an on-line data-driven Flash emulator under TPCB, C,E and H workloads. The performance evaluation results indicate an improvement of at least 2.4x on real hardware over conventional Flash storage; as well as better utilisation of native Flash parallelism. Y1 - 2015 UN - https://nbn-resolving.org/urn:nbn:de:bsz:rt2-opus4-8066 UR - http://openproceedings.org./html/pages/2015_edbt.html SN - 978-3-89318-067-7 SB - 978-3-89318-067-7 U6 - https://doi.org/10.5441/002/edbt.2015.47 DO - https://doi.org/10.5441/002/edbt.2015.47 SP - 517 EP - 520 S1 - 4 PB - University of Konstanz, University Library CY - Konstanz ER -