caa a22 4500 445852445 CHVBK 20180317145417.0 cr unu---uuuuu 170323e20110801xx s 000 0 eng 10.1007/s11227-010-0389-z doi (NATIONALLICENCE)springer-10.1007/s11227-010-0389-z DMetabench—a metadata benchmark for distributed file systems [Elektronische Daten] [Christoph Biardzki, Thomas Ludwig] The performance of metadata processing in large distributed file systems currently presents larger challenges than scaling of data throughput. The paper presents a novel, distributed benchmark called DMetabench for measuring the performance of metadata operations. DMetabench runs in environments with potentially thousands of nodes and allows an assessment of the scalability of metadata operations. Additionally, precise run-time performance data is preserved which allows for a better understanding of performance artifacts. Example results from production file systems are provided and discussed. Possible applications of knowledge about metadata performance scaling include the choice of an optimal parallelization strategy for metadata-intensive workloads in a specific runtime environment. Springer Science+Business Media, LLC, 2010 Distributed file systems nationallicence Metadata nationallicence Benchmark nationallicence Biardzki Christoph Leibniz-Rechenzentrum (LRZ) der Bayerischen Akademie der Wissenschaften, Boltzmannstr. 1, 85748, Garching, Germany aut Ludwig Thomas German Climate Computing Centre (DKRZ), Bundesstrasse 55, 20146, Hamburg, Germany aut The Journal of Supercomputing Springer US; http://www.springer-ny.com 57/2(2011-08-01), 179-188 0920-8542 57:2<179 2011 57 11227 https://doi.org/10.1007/s11227-010-0389-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11227-010-0389-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Biardzki Christoph Leibniz-Rechenzentrum (LRZ) der Bayerischen Akademie der Wissenschaften, Boltzmannstr. 1, 85748, Garching, Germany aut NATIONALLICENCE 700 1- Ludwig Thomas German Climate Computing Centre (DKRZ), Bundesstrasse 55, 20146, Hamburg, Germany aut NATIONALLICENCE 773 0- The Journal of Supercomputing Springer US; http://www.springer-ny.com 57/2(2011-08-01), 179-188 0920-8542 57:2<179 2011 57 11227 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer