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HyperDealer: Reference-Pattern-Aware Instant Memory Balancing for Consolidated Virtual Machines

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5 Author(s)
Woomin Hwang ; Comput. Eng. Res. Lab., Korea Adv. Inst. of Sci. & Technol., Daejeon, South Korea ; Yangwoo Roh ; Youngwoo Park ; Ki-Woong Park
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Memory contention among consolidated virtual machines (VMs) creates the need for a memory balancing operation. In an attempt to provide a prompt memory balancing mechanism, we found problems with the retardation of memory transfer by the reclamation delay. The scheduling of the VMs generates the delay, and a conflicts of two reclamation policies between the guest OS and the hypervisor deteriorates it. As a remedy to these problems, we propose HyperDealer, which selects the victim page by applying reference patterns, reclaims the pages with hypervisor-level paging, and transfers those pages with ballooning of the guest OS. Our scheme eliminates the involvement of the victim VM in memory balancing and extends the dwell time of reclaimed pages in the reclaimed state. Consequently, HyperDealer significantly reduces the time taken to transfer memory with a low overhead and enhances the value of additional memory for the recipient VM. The experimental results of our scheme show that the application performance in the recipient VM is 11% more time-efficient and has a penalty which is 50% less than previous approaches.

Published in:

Cloud Computing (CLOUD), 2010 IEEE 3rd International Conference on

Date of Conference:

5-10 July 2010