Recently, we have witnessed workflows from science and other data-intensive applications
emerging on Infrastructure-as-a-Service (IaaS) clouds, and many workflow service providers …

Multi-core architectures have enabled data centers to increasingly co-locate multiple jobs to
improve resource utilization and lower the operational cost. Unfortunately, naively co …

Performance isolation is critical in shared storage systems, a popular storage solution. In a
shared storage system, interference between requests from different users can affect the …

VM live migration becomes critical to deployment in the Cloud, as to enable fast and
transparent workload rescheduling among unevenly utilized physical nodes, aimed at high …

Colocating multiple throughput-oriented jobs on the same server is a commonly used
approach for improving system throughput in modern datacenters. The shared resources of …

Virtualization is one of the key enabling technologies for Cloud computing. Although it
facilitates improved utilization of resources, virtualization can lead to performance …

This paper presents a performance evaluation of scientific workflows on networked cloud
systems with particular emphasis on evaluating the effect of provisioned network bandwidth …

BACKGROUND Online hosted services may use separate databases for each customer.
Using separate databases provides data isolation, which is optimal for customer security …

Shared storage services enjoy wide adoption in commercial clouds. But most systems today
provide weak performance isolation and fairness between tenants, if at all. Most approaches …

We introduce manylogs, a simple and novel concept of logging that deploys many scattered
logs on disk such that small random writes can be appended into any log near the current …