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From Marty Sweet <msweet....@gmail.com>
Subject Re: Bandwidth Shaping - Ubuntu 12.04.3 KVM
Date Tue, 29 Oct 2013 15:19:51 GMT
Yeah it's odd, can anyone do the following test (on Linux machines) - who
have bandwidth limiting enabled:

Test 1 (VM Outbound):
Physical: iperf -s
Virtual: iperf -c physical_server_ip


Test 2 (VM Inbound):
Virtual: iperf -s
Physical: iperf -c virtual_server_ip

Thanks,
Marty


On Tue, Oct 29, 2013 at 3:00 PM, Andrija Panic <andrija.panic@gmail.com>wrote:

> I have also updated to CS 4.2, and has limit of 200 Mb/s on public net for
> guests, and from virsh, this is a section:
>
> *<model type='e1000'/>*
> *      <bandwidth>*
> *        <inbound average='25600' peak='25600'/>*
> *        <outbound average='25600' peak='25600'/>*
> *      </bandwidth>*
>
> So seems fine...
>
>
> On 29 October 2013 07:33, Jijun <jijunlx@gmail.com> wrote:
>
> >
> >  Hi Lucian,
> >>
> >> For now I have disabled it by setting the compute offerings to bandwidth
> >> limit to 0. This removes the bandwidth section from KVM XML.
> >>
> >> When my compute offering is set to 1000, the following XML is created
> (via
> >> virsh dumpxml i-2-xx-VM)
> >> <bandwidth>
> >>          <inbound average='128000' peak='128000'/>
> >>          <outbound average='128000' peak='128000'/>
> >> </bandwidth>
> >>
> >> This seems to give the bandwidth of around 2.5Mbit/s (using iperf to
> check
> >> against a physical server).
> >>
> > as describe it here:
> >
> > http://libvirt.org/**formatnetwork.html<
> http://libvirt.org/formatnetwork.html>
> >
> > the unit of inbound and outbound is kilobytes per second,
> >
> > 128000 KB/s divide 1024 = 125MB/s
> > and the compute offering is 1000 Mb/s
> > 1000Mb/s divide 8 = 125MB/s
> >
> > so  i think the value 128000  is right .
> >
> >
> >
> >
> >
> >
> >
> >
> >  Setting the compute offering to something else (I can't remember sorry!)
> >> it
> >> gave:
> >> <bandwidth>
> >>          <inbound average='640000' peak='640000'/>
> >>          <outbound average='640000' peak='640000'/>
> >> </bandwidth>
> >> But it gave a bandwidth of 1.32Mbit/s
> >>
> >>
> >> This is a tad odd, surely a higher value should result in more bandwidth
> >> being allowed through?
> >>
> >> Thanks,
> >> Marty
> >>
> >>
> >>
> >> On Mon, Oct 28, 2013 at 11:56 AM, Nux! <nux@li.nux.ro> wrote:
> >>
> >>  On 28.10.2013 11:18, Marty Sweet wrote:
> >>>
> >>>  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
> >>>>
> >>>>  Hi Marty,
> >>>
> >>> I think on Linux "tc" is the tool used to limit traffic. Have a look at
> >>> this for a crashcourse and see if it helps you find the culprit:
> >>> http://www.cyberciti.biz/faq/****linux-traffic-shaping-using-****<
> http://www.cyberciti.biz/faq/**linux-traffic-shaping-using-**>
> >>> tc-to-control-http-traffic/<ht**tp://www.cyberciti.biz/faq/**
> >>> linux-traffic-shaping-using-**tc-to-control-http-traffic/<
> http://www.cyberciti.biz/faq/linux-traffic-shaping-using-tc-to-control-http-traffic/
> >
> >>> >
> >>>
> >>> HTH
> >>> Lucian
> >>>
> >>> --
> >>> Sent from the Delta quadrant using Borg technology!
> >>>
> >>> Nux!
> >>> www.nux.ro
> >>>
> >>>
> >
> > --
> > Thanks,
> > Jijun
> >
> >
>
>
> --
>
> Andrija Panić
> --------------------------------------
>   http://admintweets.com
> --------------------------------------
>

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