Microarchitectural Analysis of Graph BI Queries on RDBMS

Abstract

We present results of microarchitectural analysis for LDBC SNB BI queries on a relational database engine. We find underutilization of multicore CPUs, inefficient instruction execution, data access overheads at the on-chip cache hierarchy, data TLB overheads, and overall low (but short-term high) memory bandwidth utilization. Using huge pages increased query performance by up to 65% and workload performance by 23%.