The Analysis of Inter-Process Interference on a Hybrid Memory System

Abstract

Persistent memory (PM) is an emerging memory device that has a larger capacity and lower cost per gigabyte than conventional DRAM. Intel has released a first PM product called Optane™ DC Persistent Memory, but its performance is several times lower than that of DRAM. Therefore, it will be used in combination with DRAM to configure hybrid memory systems that can obtain both the high performance of DRAM and large capacity of PM. In this paper, we evaluate and analyze the performance interference between various types of processes that are concurrently executed on a real server platform having a hybrid memory system. Through the evaluation with a synthetic benchmark, we show that the interference on the hybrid memory system is significantly different from that on a conventional DRAM-only memory system.