On 10/8/26 10:33, lejeczek via Users wrote: > Hi guys. > > I have a network like so: > > <network> > <name>10_1_1</name> > <uuid>864fb78e-0fb0-4c32-bb47-0e5ac68d9491</uuid> > <forward mode='bridge'/> > <bridge name='nm-bridge1011'/> > <bandwidth> > <inbound average='610351' peak='620000'/> > <outbound average='610351' peak='620000'/> > </bandwidth> > </network> > > I'd expect this to limit network to 10Gbs - since this is in kibibytes - > I assume these two add to make the max? > But when I _iperf3_ in guests then I get speeds near host's native, > which are much higher than expected limit. > Am I missing something - no <bandwidth> in guests - or there actually > might be an issue here? > I'm on Centos10 with libvirt-12.8.0-1.el10 >
Be aware that this config sets QoS on nm-bridge1011 bridge (which you can verify by running `tc -s -d class show dev nm-bridge1011`). But the thing is, when the virtualization hosts wants to send a packet to a guest it bypasses bridge and talks to vnetX directly. Try running iperf from a different host. Michal
