Open Stack

Is the duplex setting and speed set on each side to force 10ge (since
auto-neg seems to not work in this scenario)? Still waiting to hear back on
steps taken in the situation I described earlier.

Mahalo,
Adam


*Adam Lawson*
AQORN, Inc.
427 North Tatnall Street
Ste. 58461
Wilmington, Delaware 19801-2230
Toll-free: (844) 4-AQORN-NOW
Direct: +1 (302) 268-6914



On Fri, May 9, 2014 at 9:25 AM, JR <botemout at gmail.com> wrote:

> I'd be very appreciative to hear how you solved this Adam.  ;-)
>
> On 5/9/2014 12:29 AM, Adam Lawson wrote:
> > Look at the TCP stack within Windows and optimizations recommended by
> > Microsoft. I don't think it's a KVM or openstack question to be honest.
> We
> > ran into similar issues on plain old Win2008 R2 servers that were running
> > on bare metal. Will update again when I ping someone to find out what
> > specifically it was back then.
> >
> >
> > *Adam Lawson*
> > AQORN, Inc.
> > 427 North Tatnall Street
> > Ste. 58461
> > Wilmington, Delaware 19801-2230
> > Toll-free: (844) 4-AQORN-NOW
> > Direct: +1 (302) 268-6914
> >
> >
> >
> > On Thu, May 8, 2014 at 6:59 PM, JR <botemout at gmail.com> wrote:
> >
> >> Greetings,
> >>
> >> My openstack grizzly cluster runs on ubuntu 12.04 servers with 10G NICs.
> >> I have ubuntu, centos and windows 2008 R2 guests.  I've noticed that
> >> while both my linux guests can communicate at some reasonable
> >> approximation of 10G wire speed (e.g., 7-9Gb/sec on iperf tests), the
> >> windows guests max out at 2.5G when talking to the host on which they
> >> run, down to ~1.2G to other hosts.
> >>
> >> I've made some modifications as per this doc:
> >>
> >> http://www.linux-kvm.org/page/WindowsGuestDrivers/kvmnet/registry
> >>
> >> and upgraded my virtio network driver, but it's not helped.  I've also
> >> done about an hour or two of googling which has revealed little.
> >>
> >> I understand that this is not an openstack issue, but, I suspect, others
> >> have encountered this when bringing 2008 R2 guests into their clusters.
> >> Anyone?
> >>
> >> Thanks much,
> >> JR
> >>
> >>
> >>
> >> _______________________________________________
> >> Mailing list:
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> >> Post to     : openstack at lists.openstack.org
> >> Unsubscribe :
> >> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
> >>
> >
>
> --
> Your electronic communications are being monitored; strong encryption is
> an answer. My public key
> <http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x4F08C504BD634953>
>
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