Re: [Ksummit-2012-discuss] SCSI Performance regression [was Re: [PATCH 0/6] tcm_vhost/virtio-scsi WIP code for-3.6]

On Fri, 6 Jul 2012, James Bottomley wrote:

What people might pay attention to is evidence that there's a problem in
3.5-rc6 (without any OFED crap).  If you're not going to bother
investigating, it has to be in an environment they can reproduce (so
ordinary hardware, not infiniband) otherwise it gets ignored as an
esoteric hardware issue.

The OFED stuff in the meantime is part of 3.5-rc6. Infiniband has been
supported for a long time and its a very important technology given the
problematic nature of ethernet at high network speeds.

OFED crap exists for those running RHEL5/6. The new enterprise distros are
based on the 3.2 kernel which has pretty good Infiniband support
out of the box.