Date: Thu, 19 Jul 2012 14:27:31 -0400 From: Richard Yao <ryao@gentoo.org> To: "hackers@FreeBSD.org" <hackers@FreeBSD.org> Subject: Awful FreeBSD 9 block IO performance in KVM Message-ID: <50085193.6030203@gentoo.org>
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This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigCC7E672086F469F16601A803 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable 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 wro= ng? Yours truly, Richard Yao --------------enigCC7E672086F469F16601A803 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQIcBAEBAgAGBQJQCFGYAAoJECDuEZm+6ExkDSYP/2fZIyM8e1fO4vZWnJTbJd77 HomcwQ3BRHz4z87gYTP6Xbby6x97Xsp3x/aPlEd2YE6g6gZuZxUdgvA6Ufa9DaID 3Z8u7BLaF4r4TOUDIsgQ9FhHcYTR23fMHMIYuXEQspjhcwiKWZpzkEYak2dJGi39 M2ig+hXiYv2jnSMD351oL5B0oeJ6WE2l3r0iQjxR78jXz5r4LtHSmYFDHhRFmQ6D HVY7xlpdW2Zb/yeKY5EcyAQTZtSWWjMuLH9PVq9+miyU34x5Oel1B8EMbvjUlDGx fDsALGIYvlgtE7YvVgQaG0f7+VpKiJ30Mp8DfRJ4JLEVNFiG72boLJSwfLXUhZ10 1QsuIRAU11FR6H839BXUJIyFSkMGKtdyENACrajO6A9tRvA4IxG4lEyAti3mxCB9 qGMZztwJPfbyy/yWOUnFrXHFQQEhjY7N09Ic968paKtsU0mIb5BjIaR0JRSy3YEI MTPX9aA62+IKEPpMiyo/2qcmFbGwVAuaBDsyvefecXjMlCmtljfque3eBcNw1cDj 5bV2OOl13sZxCdTqzcC+A7yI9LFvpHc0QDxZkMiGZUogFGvWt9cFLRbFmg4dfs1u pq954Vh7D+gmtDMXFaYXMzjdrnBq4dXF4Lb0p3HLsji08BPyyyeYzJKjlEQFJqXe NAnBX5DRaGGARUvU/gS+ =4j/B -----END PGP SIGNATURE----- --------------enigCC7E672086F469F16601A803--
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