Measuring the runtime overhead of an I/O interception library

Sat, 30 May 2026 00:00:00 +0000

This study is part of our paper “TOTO: Transparent I/O Tuning for HPC Applications”, accepted at ICS 2026 (International Conference on Supercomputing, Belfast, July 2026). The overhead measurements below were produced with IOPS.

When you intercept I/O system calls to analyze application behavior, how much overhead do you actually add? That’s the question we needed to answer for TOTO (Transparent and Online Tool for I/O), a library that hooks into I/O calls via LD_PRELOAD to provide runtime analysis of parallel file system access patterns.

Resource-Tracing on IOPS

Measuring the runtime overhead of an I/O interception library