Open Stack

I just heard back. Within Windows, disable Large File Offload.

Let me know how that goes?

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 10:54 AM, JR <botemout at gmail.com> wrote:

> Adam,
>
> If I'm looking in the right place (the redhat virtio ethernet adapter
> properties), there is nowhere to specify forcing the speed or duplex.
> The only value I see is Init.ConnectionRate (which is 10G). I've been
> able to see performance in excess of 2Gb/sec (when running an iperf
> against the ubuntu host on which the VM runs) so it doesn't think it's a
> 1G NIC; the performance is just very poor. The same iperf from a centos
> VM to its host gives > 9Gb/sec.
>
> Thanks
> JR
>
> On 5/9/2014 1:19 PM, Adam Lawson wrote:
> > 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:
> >>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
> >>>> 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>
> >>
> >
>
> --
> 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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