VMware® Infrastructure 3 provides a set of distributed infrastructure services that make the entire IT environment more serviceable, available, and efficient. Working with VMware ESX 3, VMware VirtualCenter 2, and VMware VMotion, VMware Distributed Resource Scheduler (DRS) dynamically allocates resources to enforce resource management policies while balancing resource usage across multiple ESX ...

This paper discusses best practices for maximizing the performance of enterprise Java workloads. First, we introduce the importance of performance of enterprise Java applications. We then describe our top-down, datadriven, and closed-loop approach to characterize where the problems are. We examine the performance of the software/hardware stack, first from the system-level perspective (topology,...

New product performance was measured in a number of ways in the study – see Exhibit 1. (Use these performance data to benchmark your business’s NPD performance versus the average and top performers.) We also identify a sub-set of Best Performing businesses, and focus on their practices: these are the “benchmark businesses” that one should strive to emulate. In this mini-report and subsequent re...

Efficient performance tuning of parallel programs for multiprocessors is often hard. When it comes to assigning threads to processors there is not much support from commercial operating systems, like the Solaris operating system. The only known value is, in best case, the total execution time of each thread. The developer is left to the binpacking algorithm with no knowledge about the interacti...

This paper deals with the automatic verification of the timeliness of Public Mobile Network (PMN), consisting of Mobile Nodes (MNs) and Base Stations (BSs). We use the Murphi Model Checker to verify that the waiting access time of each MN, under different PMN configurations and loads, and different inter arrival times of MNs in a BS cell, is always below a preassigned threshold. Our experimenta...

A key challenge confronting wide-area network architects is validating that their network designs provide assurable performance in the face of variable traffic demands and failures. Validation is hard because of the exponential, and possibly non-enumerable, set of scenarios that must be considered. Current theoretical tools provide overly conservative bounds on network performance since to rema...

The rapid increase in heat dissipation in real-time systems imposes various thermal issues. For instance, real-time constraints cannot be guaranteed if a certain threshold temperature is exceeded, as it would immediately reduce the system reliability and performance. Dynamic thermal management techniques are promising methods to prevent a system from overheating. However, when designing real-ti...

It remains a challenging problem to tightly estimate the worst case response time of an application in a distributed embedded system, especially when there are dependencies between tasks. We discovered that the state-of-the art techniques considering task dependencies either fail to obtain a conservative bound or produce a loose upper bound. We propose a novel conservative performance analysis,...