Awful FreeBSD 9 block IO performance in KVM

[Richard Yao]

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?

Yours truly,
Richard Yao

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 900 bytes
Desc: OpenPGP digital signature
Url : http://lists.freebsd.org/pipermail/freebsd-hackers/attachments/20120719/98ccc138/signature.pgp