Adaptive Replacement Cache (ARC) Algorithm
A project for Advanced Operating System(CS604) that implements ARC cache replacement policy.
Refer to paper Outperforming LRU with an adaptive replacement cache algorithm
Project done under supervision of Dr. Nitin Auluck
Implementation
Four primary lists:
- MRU(T1) contains the top or most-recent pages in L1
- MRUG(B1) contains the bottom or least-recent pages in L1
- MFU(T2) contains the top or most-recent pages in L2
- MFUG(B2) contains the bottom or least-recent pages in L2
Size of these lists is controlled by parameter p, which controls the ratio of sizes between most-recent and least-recent pages
Implemented in C++ using containers from Standard Template Library(STL)
Results
ARC outperforms LRU in terms of hit-ratio and execution time (calculated in sec.)
See Result Graphs
