Web applications are mostly designed with multiple tiers for flexibility and software
reusability. It is difficult to model the behavior of multi-tier Web applications due to the fact …

In this 25th year anniversary paper for the IEEE Real Time Systems Symposium, we review
the key results in real-time scheduling theory and the historical events that led to the …

Energy costs for data centers continue to rise, already exceeding $15 billion yearly. Sadly
much of this power is wasted. Servers are only busy 10--30% of the time on average, but …

Virtualized data centers enable sharing of resources among hosted applications. However, it
is difficult to satisfy service-level objectives (SLOs) of applications on shared infrastructure …

Data centers are often under-utilized due to over-provisioning as well as time-varying
resource demands of typical enterprise applications. One approach to increase resource …

Utility computing was a vision stated more than 40 years ago. It refers to the idea that
computing resources and services can be delivered, utilized, and paid for as utilities such as …

Virtualization and consolidation of IT resources have created a need for more effective
workload management tools, one that dynamically controls resource allocation to a hosted …

Feedback performance control in software services Page 1 Software systems are becoming
larger and more complex. At the same time, they are being de- ployed in applications where …

Driven by the emergence of GPUs as a major player in high performance computing and the
rapidly growing popularity of cloud environments, GPU instances are now being offered by …

This paper presents the design and implementation of an adaptive Web server architecture
to provide relative and absolute connection delay guarantees for different service classes …