virtio net adapter driver with kvm slow on winxp

[shn]

# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 12.04.1 LTS
Release: 12.04
Codename: precise

#virsh version
Compiled against library: libvirt 1.0.4
Using library: libvirt 1.0.4
Using API: QEMU 1.0.4
Running hypervisor: QEMU 1.2.0

windows xp clean install with spice-guest-tools-0.52.exe from
  http://spice-space.org/download/windows/spice-guest-tools/spice-guest-tools-0.52.exe

it comes very slow , and the Interrupts process got very high cpu usage(above 60%).
when i switch the net adapter from virtio to default(rtl8139) ,it works well.

[huanghq (huanghq1983)]

spice-guest-tools-0.3 works well.
In spice-guest-tools-0.52 and 0.59, svchost.exe will use 50% cpu.

[Thomas Huth (th-huth)]

Triaging old bug tickets... can you still reproduce this issue with the latest version of QEMU? Or could we close this ticket nowadays?

[Launchpad Janitor (janitor)]

[Expired for QEMU because there has been no activity for 60 days.]