On 19/07/2012 20:27, Richard Yao wrote: > Dear Everyone, > > FreeBSD 9 has awful block IO performance in KVM. I have experienced it > and others have experienced it. Someone posted slides to slideshare with > benchmarks documenting it: > > http://www.slideshare.net/TakeshiHasegawa1/runningfreebsdonlinuxkvm > > Slides 13 and 20 are particular eye openers. Does anyone know what is wrong?
I'm interested in seeing if the difference is still large while writing to a raw device (dd of=/dev/xxx bs=1m count=1000) vs writing to the file system. Can you test this?
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