Memorias de investigación
Ponencias en congresos:
Dianfu Ma: A multi-resource load balancing algorithm for cloud cache systems.
Año:2013
Áreas de investigación
  • Ciencias de la computación y tecnología informática
Datos
Descripción
With the advent of cloud computing model, distributed caches have become the cornerstone for building scalable applications. Popular systems like Facebook [1] or Twitter use Memcached [5], a highly scalable distributed object cache, to speed up applications by avoiding database accesses. Distributed object caches assign objects to cache instances based on a hashing function, and objects are not moved from a cache instance to another unless more instances are added to the cache and objects are redistributed. This may lead to situations where some cache instances are overloaded when some of the objects they store are frequently accessed, while other cache instances are less frequently used. In this paper we propose a multi-resource load balancing algorithm for distributed cache systems. The algorithm aims at balancing both CPU and Memory resources among cache instances by redistributing stored data. Considering the possible conflict of balancing multiple resources at the same time, we give CPU and Memory resources weighted priorities based on the runtime load distributions. A scarcer resource is given a higher weight than a less scarce resource when load balancing. The system imbalance degree is evaluated based on monitoring information, and the utility load of a node, a unit for resource consumption. Besides, since continuous rebalance of the system may affect the QoS of applications utilizing the cache system, our data selection policy ensures that each data migration minimizes the system imbalance degree and hence, the total reconfiguration cost can be minimized. An extensive simulation is conducted to compare our policy with other policies. Our policy shows a significant improvement in time efficiency and decrease in reconfiguration cost.
Internacional
Si
Nombre congreso
28th Symposium on Applied Computing (SAC¿13).
Tipo de participación
960
Lugar del congreso
Coimbra (Portugal)
Revisores
Si
ISBN o ISSN
978-1-4503-1656-9
DOI
Fecha inicio congreso
18/03/2013
Fecha fin congreso
22/03/2013
Desde la página
463
Hasta la página
470
Título de las actas
SAC '13 Proceedings of the 28th Annual ACM Symposium on Applied Computing
Esta actividad pertenece a memorias de investigación
Participantes
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Laboratorio de sistemas distribuidos (LSD)