Network slicing to enable resource sharing among multiple tenants –network operators and/or services– is considered a key functionality for next generation mobile networks. This paper provides an analysis of a well-known model for resource sharing, the ‘share-constrained proportional allocation’ mechanism, to realize network slicing. This mechanism enables tenants to reap the performance benefi...

Cloud environments strongly rely on virtualization infrastructure that provides virtual resources by abstracting from the physical hardware. Thus, cloud providers can cost-efficiently share physical hardware among multiple tenants, and a single virtual resource may span multiple physical resources at different geo-locations. From a tenant’s perspective, the uncertainty about location and contex...

Cloud computing is emerging as an increasingly popular computing paradigm, allowing dynamic scaling of resources available to users as needed. This requires a highly accurate demand prediction and resource allocation methodology that can provision resources in advance, thereby minimizing the virtual machine downtime required for resource provisioning. In this paper, we present a dynamic resourc...

In distributed systems shared by multiple tenants, effective resource management is an important pre-requisite to providing quality of service guarantees. Many systems deployed today lack performance isolation and experience contention, slowdown, and even outages caused by aggressive workloads or by improperly throttled maintenance tasks such as data replication. In this work we present Retro, ...

Relational database-as-a-service (DaaS) providers need to rely on multi-tenancy and resource sharing among tenants, since statically reserving resources for a tenant is not cost effective. A major consequence of resource sharing is that the performance of one tenant can be adversely affected by resource demands of other co-located tenants. One such resource that is essential for good performanc...

Cloud IaaS and PaaS tenants rely on cloud providers to provide network infrastructures that make the appropriate tradeoff between cost and performance. This can include mechanisms to help customers understand the performance requirements of their applications. Previous research (e.g., Proteus and Cicada) has shown how to do this for network-bandwidth demands, but cloud tenants may also need to ...

The refurbishment market has grown greatly in the last decade. Relevant projects are becoming increasingly more demanding in the construction industry due to the emphasis on sustainability. Most refurbishment works, however, involve a higher level of risk and uncertainty, as well as more complex coordination than new buildings. These characteristics are likely to cause asymmetric information be...