Sequential Writes

It is very easy to detect whether a write group is being written to by a sequential access write client or a random access one, see, for example, [3, Section II.A]. In this paper, we enhance the algorithm in Figure 4 to never set the recency bit to $1$ on a sequential access. This is reflected in lines 2-4 in Figure 4. This heuristic gives the bulky sequential stripes a smaller life and frees up the cache for more number of less populated stripes that could potentially yield more hits.