Benchmarking Disk Performance (Windows and Linux on Xen) -


i kind of new world of virtualization...i doing tests using different tools (iometer, fio, dd tool, , bonnie++). idea benchmark disk performance different operating systems in virtualized environment , different types of virtualization (paravirt. , full-virt.).

the results out of tests windows (xp, 7 , 8) not expected tools, since got relatively high performance results without installing paravirt. drivers windows, , more surprisingly after installing paravirt. drivers performance decreased.

samples of tests using fio tool:

writing sequential file size of 16 gb , block size of 512 kb

windows 7 (full-virt.): 87.2 mb/s average aggregate bandwidth

ubuntu (paravirt.): 72.9 mb/s average aggregate bandwidth

any ideas going on here (i using opensuse os in case matters) !!

thanks

i'd downvote if could. core issue need accurately identify io profile of applications running. writing 16 gb of sequential data atypical workload.

once have realistic understanding of io workload, can configure testing tools match.


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