Fig. 6

PokerFace performance overhead on micro benchmarks. The graph shows the overhead incurred by Poker on the Sysbench and STREAM micro benchmarks. These benchmarks represent CPU, memory and file workloads. Since PokerFace essentially operates on the memory subsystem, the memory benchmarks suffer an overhead of up to 7%, of which 4% is due to Poker and always sustained. The additional 3% overhead due to Face occurs only when an attack is suspected and cache obfuscation is triggered. CPU and file benchmarks incur negligible overheads of 1-2%