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From Marty Sweet <msweet....@gmail.com>
Subject Re: Bandwidth Shaping - Ubuntu 12.04.3 KVM
Date Mon, 28 Oct 2013 21:00:41 GMT
Yeah, from the libvirt website (http://libvirt.org/cgroups.html):

Network tuning

The net_cls is not currently used. Instead traffic filter policies are set
directly against individual virtual network interfaces.


However, when bandwidth limiting is applied, I can't see any obvious rules
with any of the 'tc' commands.
Thanks for your help on this,
Marty

Marty


On Mon, Oct 28, 2013 at 8:36 PM, Marcus Sorensen <shadowsor@gmail.com>wrote:

> It just uses the libvirt XML, which uses cgroups, which uses tc rules.
>
> On Mon, Oct 28, 2013 at 2:25 PM, Marty Sweet <msweet.dev@gmail.com> wrote:
> > Hi Marcus,
> >
> > My earlier email mentioned those configurations, unfortunately not really
> > complying with what was set out in the compute offering.
> > After setting the compute offering network limit and stop/starting the
> VMs
> > the lines do not appear, and outbound traffic has returned to normal
> speeds
> > but inbound is proving an issue.
> >
> > Also tried rebooting the hypervisor hosts with no success.
> > How is this traffic shaping implemented, is it just via KVM and virsh, or
> > does cloudstack run custom tc rules?
> >
> > Thanks,
> > Marty
> >
> >
> > On Mon, Oct 28, 2013 at 8:19 PM, Marcus Sorensen <shadowsor@gmail.com
> >wrote:
> >
> >> Check the XML that was generated when the VM in question was started:
> >>
> >> # virsh dumpxml i-2-15-VM | egrep "inbound|outbound"
> >>         <inbound average='2560000' peak='2560000'/>
> >>         <outbound average='2560000' peak='2560000'/>
> >>
> >>
> >> See if the settings match what you put in your network offering or
> >> properties (whichever applies to your situation).
> >>
> >>
> >> On Oct 28, 2013 1:44 PM, "Marty Sweet" <msweet.dev@gmail.com> wrote:
> >>
> >> > Thanks for the links, while I have set 0 for all the properties the
> >> > following results still occur:
> >> >
> >> > Guest -> Other Server : >900Mbps (As expected)
> >> > Other Server -> Guest (so inbound to the VM) : Varies depending on
> >> > hypervisor host: 121, 405, 233, 234Mbps
> >> >
> >> > Each hypervisor has 2 NICS in an LACP bond, was working perfectly
> before
> >> > 4.2.0 :(
> >> >
> >> > Thanks,
> >> > Marty
> >> >
> >> >
> >> >
> >> > On Mon, Oct 28, 2013 at 2:44 PM, Marcus Sorensen <shadowsor@gmail.com
> >> > >wrote:
> >> >
> >> > > Yeah, the bandwidth limiting for KVM was dropped into 4.2. You just
> >> > > need to tweak your settings, whether it's on network offerings or
> >> > > global.
> >> > >
> >> > > On Mon, Oct 28, 2013 at 8:25 AM, Wei ZHOU <ustcweizhou@gmail.com>
> >> wrote:
> >> > > > Please read this artcle
> http://support.citrix.com/article/CTX132019
> >> > > > Hope this help you.
> >> > > >
> >> > > >
> >> > > > 2013/10/28 Marty Sweet <msweet.dev@gmail.com>
> >> > > >
> >> > > >> Hi Guys,
> >> > > >>
> >> > > >> Following my upgrade from 4.1.1 -> 4.2.0, I have noticed
that VM
> >> > > traffic is
> >> > > >> now limited to 2Mbits.
> >> > > >> My compute offerings were already 1000 for network limit
and I
> have
> >> > > created
> >> > > >> new offerings to ensure this wasn't the issue (this fixed
it for
> >> > > someone in
> >> > > >> the mailing list).
> >> > > >>
> >> > > >> Is there anything that I am missing? I can't remember reading
> this
> >> as
> >> > a
> >> > > bug
> >> > > >> fix or new feature.
> >> > > >> If there is a way to resolve or disable it, it would be most
> >> > > appreciated -
> >> > > >> have been going round in circles for hours.
> >> > > >>
> >> > > >> Thanks,
> >> > > >> Marty
> >> > > >>
> >> > >
> >> >
> >>
>

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