Details

Autor(en) / Beteiligte

• Casale, G.
• Kraft, S.
• Krishnamurthy, D.

Titel

A Model of Storage I/O Performance Interference in Virtualized Systems

Ist Teil von

• 2011 31st International Conference on Distributed Computing Systems Workshops, 2011, p.34-39

Ort / Verlag

IEEE

Erscheinungsjahr

2011

Quelle

IEEE Electronic Library (IEL)

Beschreibungen/Notizen

• In this paper, we propose simple performance models to predict the impact of consolidation on the storage I/O performance of virtualized applications. We use a measurement-based approach based on tools such as blktrace and tshark for storage workload characterization in a commercial virtualized solution, namely VMware ESX server. Our approach allows a distinct characterization of read/write performance attributes on a per request level and provides valuable information for parameterization of storage I/O performance models. In particular, based on measures of quantities such as the mean queue-length seen upon arrival by requests, we define simple linear prediction models for the throughput, response times, and mix of read/write requests in consolidation based only on information collected in isolation experiments for the individual virtual machines.