This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
Home Products Support Community News


Re: [Xen-devel] Interrupt forwarding

On 12 Mar 2005, at 20:07, Jon Smirl wrote:

[jonsmirl@jonsmirl proc]$ cat interrupts
           CPU0       CPU1
  0:     484259     448188    IO-APIC-edge  timer
  8:          0          0    IO-APIC-edge  rtc
  9:          0          0   IO-APIC-level  acpi
 14:        776        762    IO-APIC-edge  ide0
 15:       8040       7726    IO-APIC-edge  ide1
169:      37509          0   IO-APIC-level  libata, uhci_hcd:usb4, eth0
185:          5          0   IO-APIC-level  ehci_hcd:usb1
193: 548 272 IO-APIC-level uhci_hcd:usb2, uhci_hcd:usb5
201:          0          0   IO-APIC-level  uhci_hcd:usb3
209:          3          0   IO-APIC-level  ohci1394
NMI:          0          0
LOC:     932357     932306
ERR:          0
MIS:          0

Bizarre. Not only routed through an I/O APIC, but the IRQ numbers are large enough to probably be MSI vectors. Perhaps the mobo layout has legacy PCI slots sharing IRQ lines before reaching MSI logic in the chipset? Putting network on the same line as anything else is very sucky. Is this really a server-class board?

 -- Keir

SF email is sponsored by - The IT Product Guide
Read honest & candid reviews on hundreds of IT Products from real users.
Discover which products truly live up to the hype. Start reading now.
Xen-devel mailing list