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Transient computing has become popular in public cloud environments forrunning delay-insensitive batch and data processing applications at low cost.Since transient cloud servers can be revoked at any time by the cloud provider,they are considered unsuitable for running interactive application such as webservices. In this paper, we present VM deflation as an alternative mechanism toserver preemption for reclaiming resources from transient cloud servers underresource pressure. Using real traces from top-tier cloud providers, we show thefeasibility of using VM deflation as a resource reclamation mechanism forinteractive applications in public clouds. We show how current hypervisormechanisms can be used to implement VM deflation and present cluster deflationpolicies for resource management of transient and on-demand cloud VMs.Experimental evaluation of our deflation system on a Linux cluster shows thatmicroservice-based applications can be deflated by up to 50\% with negligibleperformance overhead. Our cluster-level deflation policies allow overcommitmentlevels as high as 50\%, with less than a 1\% decrease in applicationthroughput, and can enable cloud platforms to increase revenue by 30\%.

Cloud-scale VM Deflation for Running Interactive Applications On Transient Servers