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virtio net adapter driver with kvm slow on winxp
# 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.
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