Colocation and Latency Optimization May 2012

Automatic Object Colocation Based on Read Barriers

Object colocation is an optimization that reduces memory access costs by grouping together heap objects so that their order in memory matches their access order in the program. We implemented this optimization for Sun Microsystems’ Java HotSpot VM. The garbage collector, which moves objects during collection, assigns consecutive addresses to connected objects and handles them as atomic units. W...

Cost-Aware Traffic Management under Demand Uncertainty From a Colocation Data Center User’s Perspective

Burstable billing is widely adopted by colocation data center providers to charge their users for data transferring. This paper propose a cost-aware traffic management approach for a colocation data center user under burstable billing where it is charged based on the 95th percentile bandwidth usage. To do this, we first develop a tractable mathematical expression to calculate the 95th percentil...

Colocation Games and Their Application to Distributed Resource Management

We introduce Colocation Games as the basis of a general framework for modeling, analyzing, and facilitating the interactions between the various stakeholders in distributed/cloud computing environments, where resources are offered in an open marketplace to independent, rational parties interested in setting up their own applications. Virtualization technologies enable the partitioning of such r...

Colocation and Scientific Collaboration: Evidence from a Field Experiment

Low latency IIR digital filter design by using metaheuristic optimization algorithms

Filters are particularly important class of LTI systems. Digital filters have great impact on modern signal processing due to their programmability, reusability, and capacity to reduce noise to a satisfactory level. From the past few decades, IIR digital filter design is an important research field. Design of an IIR digital filter with desired specifications leads to a no convex optimization pr...