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 <[email protected]>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 <[email protected]> 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! <[email protected]> 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 > -------------------------------------- >
