A door latch system may include a foot actuator, a first disk, a first linkage coupled to the foot actuator and the first disk, a locking mechanism, and a second linkage coupled to the first disk and the locking mechanism. At least a given one of the thread caches in an illustrative embodiment includes a memory array having multiple sets of memory locations, and a directory for storing tags each corresponding to at least a portion of a particular address of one of the memory locations. The intake manifold is associated with the internal combustion engine.