Measurement-Based Timing Analysis
نویسندگان
چکیده
In this paper we present a measurement-based worst-case execution time (WCET) analysis method. Exhaustive end-to-end execution-time measurements are computationally intractable in most cases. Therefore, we propose to measure execution times of subparts of the application code and then compose these times into a safe WCET bound. This raises a number of challenges to be solved. First, there is the question of how to define and subsequently calculate adequate subparts. Second, a huge amount of test data is required enforcing the execution of selected paths to perform the desired runtime measurements. The presented method provides solutions to both problems. In a number of experiments we show the usefulness of the theoretical concepts and the practical feasibility by using current state-of-the-art industrial case studies from project partners.
منابع مشابه
Improving Tor security against timing and traffic analysis attacks with fair randomization
The Tor network is probably one of the most popular online anonymity systems in the world. It has been built based on the volunteer relays from all around the world. It has a strong scientific basis which is structured very well to work in low latency mode that makes it suitable for tasks such as web browsing. Despite the advantages, the low latency also makes Tor insecure against timing and tr...
متن کاملA Nonlinear Autoregressive Model with Exogenous Variables Neural Network for Stock Market Timing: The Candlestick Technical Analysis
In this paper, the nonlinear autoregressive model with exogenous variables as a new neural network is used for timing of the stock markets on the basis of the technical analysis of Japanese Candlestick. In this model, the “nonlinear autoregressive model with exogenous variables” is an analyzer. For a more reliable comparison, here (like the literature) two approaches of Raw-based and Signal-ba...
متن کاملMeasurement-Based Timing Analysis of the AURIX Caches
Cache memories are one of the hardware resources with higher potential to reduce worst-case execution time (WCET) costs for software programs with tight real-time constraints. Yet, the complexity of cache analysis has caused a large fraction of real-time systems industry to avoid using them, especially in the automotive sector. For measurement-based timing analysis (MBTA) – the dominant techniq...
متن کاملAutomated Symbolic Timing Analysis for Distributed Systems
A timing property of a distributed system is an assertion about the time intervals between events in executions of that system. There are three traditional approaches to determining timing properties of distributed systems: measurement, simulation, and analysis. Results from analysis can be symbolic and therefore much more general than results from measurement and simulation. For example, analy...
متن کاملTowards Adaptable Control Flow Segmentation for Measurement-Based Execution Time Analysis
During the design of embedded real-time systems, engineers have to consider the temporal behavior of software running on a particular hardware platform. Measurement-based timing analysis is a technique that combines elements from static code analysis with execution time measurements on real physical hardware. Because performing exhaustive measurement is generally not tractable, some kind of abs...
متن کاملThe time measurement and workload of primary health care services in Qom's comprehensive health centers: Based on the Health Reform Plan
Background and Aim: Promoting health and responding to the health needs of people and communities is the most important mission of any country's health system.In recent years،the concept of health and its determinants and on the other hand the health needs and demographic structure of societies have undergone many changes. Fair access to High quality health care seems impossible without formul...
متن کامل