IDLE-SAVE - Intelligent Dynamic Load Efficiency for Savings in Virtual Environments

• Grant number: 24/19288-9
• Support Opportunities: Regular Research Grants
• Start date: February 01, 2025
• End date: January 31, 2027
• Field of knowledge: Physical Sciences and Mathematics - Computer Science - Computer Systems
• Mobility Program: SPRINT - Projetos de pesquisa - Mobilidade
• Principal Investigator: Daniel de Angelis Cordeiro
• Grantee: Daniel de Angelis Cordeiro
• Principal researcher abroad: David BROMBERG
• Institution abroad: Université de Rennes 1 , France
• Host Institution: Escola de Artes, Ciências e Humanidades (EACH). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• City of the host institution: São Paulo
• Associated researchers: Renan Cerqueira Afonso Alves
• Associated research grant: 24/01115-0 - CCD - Carbon Neutral Cities, AP.CCD

Abstract

Applications running in VMs can exhibit idle periods, for example, lazy polling waiting for a network packet or a thread in a synchronization pool waiting for other threads to join. Even in the Cloud, a recent study shows that at least 25% of applications are idle 50% of their lifetime in VMs. In this project, we propose to design smart governors (IDLE-SAVE) to tackle the sub-optimal energy management of idle VMs in the Cloud. The main objective of IDLE-SAVE is to identify VMs idle periods, and not account the idle period in the computing of the next CPU state to switch. IDLE-SAVE design goals are (i) genericity: should be generic enough to be applied to mainstream virtualization systems, and (ii) non-intrusiveness: should not require legacy code to run in user VMs to favor adoption by Cloud providers. (AU)