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SUMMARY:(Research) Privacy types revisited / (Research) Predicting the Per
 formance of Virtual Machine Migration - Sherif Akoush and Soren Preibush
DTSTART:20100125T140000Z
DTEND:20100125T150000Z
UID:TALK22536@talks.cam.ac.uk
CONTACT:Andrew Rice
DESCRIPTION:Research: Privacy types revisited\, Sören Preibusch\n\nPrivac
 y types structure a population of consumers into several groups that exhib
 it similar concerns about revealing personal information. Originally devel
 oped for an offline world\, privacy types such as “fundamentalists” or
  “unconcerned” have been applied subsequently to online populations to
  characterise Web users with pronounced or non-existent concerns about dat
 a protection respectively. The main promise of privacy types is an intuiti
 ve\, easy-to-use taxonomy of privacy concerns to support academic research
  and corporate planning alike.\nThis work-in-progress talk suggests the as
 sumptions for establishing privacy types are not necessarily met. Based on
  empirical data collected in a winter 2009 field experiment\, the speaker 
 argues that prototypical privacy preferences are hard to discern. Even fin
 e-grained clustering achieves poor coverage of the entire online populatio
 n. Alternative approaches to this apparent heterogeneity in privacy prefer
 ences are discussed along with managerial implications.\n\nResearch: Predi
 cting the Performance of Virtual Machine Migration\, Sherif Akoush\n\nLive
  migration is a particularly useful feature in virtualised infrastructure.
  However\, in order to be useful on a large scale it is important to be ab
 le to predict migration times accurately. In this presentation I character
 ise the parameters affecting live migration in Xen and show that increasin
 g link speeds can provide significant gains for some applications. I furth
 er highlight significant variations in migration times\nand provide two si
 mulation models that are able to predict virtual machine migration times t
 o within more than 90% accuracy for both synthetic and real-world benchmar
 ks.\n
LOCATION:SS03\, William Gates Building
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