Green CI/CD: Carbon-Aware Build & Test Scheduling for Large Monorepos

Abstract

The growing environmental footprint of software development necessitates that the practice of continued development be sustainable in Continuous Integration/Continuous Deployment (CI/CD) pipelines. The paper discusses carbon-conscious build and test scheduling techniques tailored to large monorepos, which are generally known to pose specific challenges to CI/CD workflows. It aims to decrease the carbon footprint of build and test processes while maintaining optimal performance and efficiency. This study, through the assimilation of carbon-conscious scheduling, has been able to find the strategic approaches that can be used to achieve efficient scheduling of energy-bearing systems, which reduces wasteful use of resources without compromising system delivery. The research design involves collecting data from CI/CD logs, energy consumption measurements, and carbon emissions data across various monorepo settings. An evaluation of the effectiveness of these strategies compared to the conventional methods is made. The results demonstrate a considerable reduction in carbon emissions, with no decrease or even an increase in the efficiency of the CI/CD pipeline