Dasari, DakshinaNélis, VincentAndersson, Björn2014-02-062014-02-062011978-1-4577-0016-3978-1-4577-0017-01946-0740http://hdl.handle.net/10400.22/3743The usage of COTS-based multicores is becoming widespread in the field of embedded systems. Providing realtime guarantees at design-time is a pre-requisite to deploy real-time systems on these multicores. This necessitates the consideration of the impact of the contention due to shared low-level hardware resources on the Worst-Case Execution Time (WCET) of the tasks. As a step towards this aim, this paper first identifies the different factors that make the WCET analysis a challenging problem in a typical COTS-based multicore system. Then, we propose and prove, a mathematically correct method to determine tight upper bounds on the WCET of the tasks, when they are co-scheduled on different cores.engjournal article10.1109/ETFA.2011.6059176