Re: core2 duo, interrupts: is this normal?

From: Len Brown
Date: Fri Mar 16 2007 - 01:33:28 EST


On Thursday 15 March 2007 21:24, Norberto Bensa wrote:
> Hello,
>
> is this output, normal? I meant, why counters on CPU1 is zero? Isn't this
> balanced?

yes, it is normal.

If you had an interrupt-limited workload then irqbalance
would pick things up and spread them out.

-Len


> $ cat /proc/interrupts
> CPU0 CPU1
> 0: 4180170 0 IO-APIC-edge timer
> 1: 8060 0 IO-APIC-edge i8042
> 7: 0 0 IO-APIC-edge parport0
> 9: 0 0 IO-APIC-fasteoi acpi
> 12: 5 0 IO-APIC-edge i8042
> 16: 322297 0 IO-APIC-fasteoi uhci_hcd:usb3, libata, nvidia,
> EMU10K1
> 17: 896399 0 IO-APIC-fasteoi bttv0, eth0, libata
> 18: 72867 0 IO-APIC-fasteoi ehci_hcd:usb1, uhci_hcd:usb7
> 19: 27770 0 IO-APIC-fasteoi ehci_hcd:usb2, uhci_hcd:usb5
> 20: 0 0 IO-APIC-fasteoi uhci_hcd:usb4
> 21: 0 0 IO-APIC-fasteoi uhci_hcd:usb6
> 22: 3 0 IO-APIC-fasteoi ohci1394
> 23: 155 0 IO-APIC-fasteoi HDA Intel
> 219: 103056 0 PCI-MSI-edge libata
> NMI: 0 0
> LOC: 4077613 4077622
> ERR: 0
> MIS: 0
>
>
> Many thanks in advance,
> Norberto
> -
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