In fixed-priority scheduling the priority of a job, once assigned, may not change. A new fixed-priority algorthm for scheduling systems of periodic tasks upon identical multiprocessors is proposed. This algorithm has an achievable utilization of (m + 1)/2 upon m unit-capacity processors. It is proven that this algorithm is optimal from the perspective of achievable utilization, in the sense tha...

There are sporadic task systems schedulable by EDF, which no fixed-priority (FP) algorithm can schedule successfully. For instance, it is known that while all implicit-deadline sporadic task systems with utilization at most one are EDF-schedulable on a unit-capacity uniprocessor, there are implicit-deadline sporadic task systems that are not schedulable by any FP algorithm, and have utilization...

Several enhancements to ERICA are described. The resulting scheme, ERICA+ provides congestion avoidance with 100% utilization. Even at 100% utilization, the queue lengths are bounded. The scheme gives better control of end-to-end delay compared to other schemes and keeps link utilization of expensive links high despite idle periods in the input load. The scheme responds well to VBR traffic by e...

In IT management, CPU utilization is arguably the most basic performance metric. It is also one of the most multi-faceted with IBM’s RMF and SMF providing over 60 variations of zSeries CPU utilizations, spanning differing degrees of granularities and complexity. So which CPU utilization metrics are right for you? Why, when, and how do you use each of them? We advocate a new, multi-tiered approa...

The utilization of unbounded external reinforcing bars is one of the strengthening methods used after loading stage and before failure. The method has been used in different forms to strengthen members of reinforced concrete structures. To investigate the effect of utilization of post-tensioned reinforcing bars in this method of strengthening, a number of reinforced concrete beams was tested. S...

This paper deals with the service performance analysis and improvement using discrete event simulation has been used. The simulation of the health care has been done by arena master development 14-version software. The performance measurement for this study are patients output, service rate, service efficiency and it is directly related to waiting time of patients in each service station, work ...