Contents

• Introduction
• Automated Frame Counting Method
• Automated Frame Counting Method Walkthrough
• Steed's Method
• Di Luca's Method
• Mechanical Latency Simulator

Introduction

Low latency is a critical requirement for an effective virtual environment, but when designing systems with latencies in the order of milliseconds, measuring it is anything but straightforward. Measuring Latency in Virtual Environments documents our investigation into a number of latency measurement techniques. The following materials are intended to accompany it.
Here can be found more details on the operation of our Automated Frame Counting Method, manuals explaining how to measure latency of interactive systems using the profiled methods, and downloads of the code for each along with example captures. Additionally we describe the construction of our mechanical latency simulator, and provide its source code and schematics.

For details on how each technique operates, the original publications should be consulted:

• Automated Frame Counting Method in Latency Measurement in Virtual Environments
• Steed's Method in A Simple Method for Estimating the Latency of Interactive, Real-Time Graphics Simulations
• Di Luca's Method in New Method to Measure End-to-End Delay of Virtual Reality

During our investigation we modified the author's original code to make improvements where available. These are detailed in our paper. We also made modifications to normalise the interfaces and data sources so we could better automate their use with our large data sets. It is recommended the authors original code be reviewed as well.