Avoid Sharing Interrupts Under Kvm Guest

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Hi all,

How can I avoid sharing interrupts in a kvm guest? I have installed a debian 7 guest in a CentOS 6.4 host with 5 virtio vnics and 2 virtio disks and irq11 is used by eth2, eth3, eth4 and irq10 eth0, eth1 …

Is it possible to avoid this situation??

Thanks.

4 thoughts on - Avoid Sharing Interrupts Under Kvm Guest

  • AFAIK irqbalance can only dynamically set CPU affinity for irq handlers, but is unable to reassign irq numbers.

    Is ACPI/APIC enabled in your qemu options? Usually virtio devices in
    /proc/interrupts can be seen as two handlers per device – config request queue and data transmission requests queue.
    10.10.2013 11:14

  • Yes I have enabled ACPI/APIC … I have tried with another FreeBSD
    guest, and same problem … Is it possible to assign different interrupts for pci also??

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