Abstract: A method and system to perform deterministic timing analysis of a plurality of software tasks involves cache memory that is shared by the plurality of software tasks. Real memory is accessible by the plurality of software tasks. A task scheduler establishes a cache flush between executions of consecutive tasks among the plurality of software tasks. The cache flush includes movement of data in the cache memory to the real memory. A processor executes the plurality of software tasks to obtain a worst case execution time (WCET) associated with each of the plurality of software tasks.