Major urban areas experience active bottlenecks on a regular basis. Recently, the US Federal Highway Administration launched a new initiative aimed at identifying key bottlenecks in each state. In Oregon, a regional archive of freeway data from inductive loop detectors (PORTAL) is currently leveraging bottleneck identification and prioritization efforts. In addition to products that are attract...

In 1942, Walls described the concept of a 'nocturnal bottleneck' in placental mammals, where these species could survive only by avoiding daytime activity during times in which dinosaurs were the dominant taxon. Walls based this concept of a longer episode of nocturnality in early eutherian mammals by comparing the visual systems of reptiles, birds and all three extant taxa of the mammalian lin...

The goal of performance maintenance is to improve the performance of a software system after delivery. As the performance of a system is often characterized by unexpected combinations of metric values, manual analysis of performance is hard in complex systems. In this paper, we propose an approach that helps performance experts locate and analyze spots – so called performance improvement opport...

Dynamic Performance Stubs support performance improvement. They can be used to identify “hidden” bottlenecks and also to provide better estimations of the gain from performance improvement. The idea behind these stubbing mechanism will be described, the core concept will be explained and a closer look on the possibility of creating stubs will be given. Furthermore an introduction on “How to use...

Lijie Heng 9032366867 Contributions of the Paper This paper investigates potential non-access bottlenecks which may arise after fixing the bottlenecks at the edges of the network by updating the access links in the future. The first contribution of this paper is to propose a good method for measuring the non-access Internet bottleneck links by choosing representative sources and destinations. B...