Towards Scalable Multiprocessor Virtual Machines

13 years 8 months ago
Towards Scalable Multiprocessor Virtual Machines
A multiprocessor virtual machine benefits its guest operating system in supporting scalable job throughput and request latency--useful properties in server consolidation where servers require several of the system processors for steady state or to handle load bursts. Typical operating systems, optimized for multiprocessor systems in their use of spin-locks for critical sections, can defeat flexible virtual machine scheduling due to lock-holder preemption and misbalanced load. The virtual machine must assist the guest operating system to avoid lock-holder preemption and to schedule jobs with knowledge of asymmetric processor allocation. We want to support a virtual machine environment with flexible scheduling policies, while maximizing guest performance. This paper presents solutions to avoid lock-holder preemption for both fully virtualized and paravirtualized environments. Experiments show that we can nearly eliminate the effects of lock-holder preemption. Furthermore, the paper pres...
Volkmar Uhlig, Joshua LeVasseur, Espen Skoglund, U
Added 31 Oct 2010
Updated 31 Oct 2010
Type Conference
Year 2004
Where JVM
Authors Volkmar Uhlig, Joshua LeVasseur, Espen Skoglund, Uwe Dannowski
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