Ubuntu
qemu-kvm package

  1. Bug #1423631
  2. Comment #0

Comment 0 for bug 1423631

Revision history for this message
Michael Kazakov (gnomino) wrote : tap interface drors may packages on highload sysstems

I use qemu-kvm in openstak. On highload hypervisor tap interface of net-highload gues drops many TX packages.
Network options of qemu-system-x86_64 "... -netdev tap,fd=30,id=hostnet0,vhost=on,vhostfd=31 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=fa:16:3e:86:67:7b,bus=pci.0,addr=0x3..."

Network domin config:

    <interface type='bridge'>
      <mac address='fa:16:3e:86:67:7b'/>
      <source bridge='qbre4009073-0b'/>
      <target dev='tape4009073-0b'/>
      <model type='virtio'/>
      <alias name='net0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
    </interface>

tape4009073-0b Link encap:Ethernet HWaddr fe:16:3e:86:67:7b
          inet6 addr: fe80::fc16:3eff:fe86:677b/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:1587622634 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1484106438 errors:0 dropped:460259 overruns:0 carrier:0
          collisions:0 txqueuelen:500
          RX bytes:877878711500 (877.8 GB) TX bytes:3071846828531 (3.0 TB)