sponsored byACMIEEE The International Conference for High Performance 
Computing, Networking, Storage and Analysis
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SCHEDULE: NOV 15-20, 2015

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Consistent Hashing Distance Metrics for Large-Scale Object Storage

SESSION: Regular & ACM Student Research Competition Poster Reception

EVENT TYPE: Posters, Receptions, ACM Student Research Competition

EVENT TAG(S): HPC Beginner Friendly, Regular Poster

TIME: 5:15PM - 7:00PM

SESSION CHAIR(S): Michela Becchi, Manish Parashar, Dorian C. Arnold

AUTHOR(S):Philip Carns, Kevin Harms, John Jenkins, Misbah Mubarak, Robert B. Ross, Christopher Carothers

ROOM:Level 4 - Lobby


Large-scale storage systems often use object-level replication to protect
against server failures. This calls for the development of efficient
algorithms to map replicas to servers at scale. We introduce a modular,
open-source consistent hashing library, called libch-placement, and use it to
investigate design trade-offs in CPU efficiency, replica declustering, and
object sharding for replicated object placement. We identify a multiring
hashing configuration that strikes a balance between all three properties. We
also demonstrate that large-scale object placement can be calculated at
an aggregate rate of tens of billions of objects per second with 8,192
servers. These technologies can be leveraged by large-scale storage systems
to improve performance, improve reliability, and manage data placement with
per-object granularity.

Chair/Author Details:

Michela Becchi, Manish Parashar, Dorian C. Arnold (Chair) - University of Missouri|Rutgers University|University of New Mexico|

Philip Carns - Argonne National Laboratory

Kevin Harms - Argonne National Laboratory

John Jenkins - Argonne National Laboratory

Misbah Mubarak - Argonne National Laboratory

Robert B. Ross - Argonne National Laboratory

Christopher Carothers - Rensselaer Polytechnic Institute

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