I have a machine running Centos 5, x86_64.
It has an Intel NIC:
# lspci
15:00.0 Ethernet controller: Intel Corporation 82572EI Gigabit Ethernet
Controller (Fiber) (rev 06)
The machine has two dualcore cpus.
If I look at /proc/interrupts I get:
CPU0 CPU1 CPU2 CPU3
0: 144873228 220741831 173615012 220733357 IO-APIC-edge timer
4: 269120 1203485 1964914 1528555 IO-APIC-edge serial
7: 0 0 0 0 IO-APIC-edge parport0
8: 0 0 0 0 IO-APIC-edge rtc
9: 0 0 0 0 IO-APIC-level acpi
14: 137 3218764 3143397 430444 IO-APIC-edge ide0
90: 3403812 5504380 553784 1273225 IO-APIC-level aic79xx
98: 460440049 0 0 0 PCI-MSI eth0
169: 210489 9211230 26272710 31733980 IO-APIC-level
uhci_hcd:usb2, uhci_hcd:usb3, aacraid
177: 0 0 0 0 IO-APIC-level
uhci_hcd:usb4
185: 2 0 0 0 IO-APIC-level
uhci_hcd:usb1, ehci_hcd:usb5
NMI: 359 102 105 115
LOC: 744651234 743298229 744651090 743298086
ERR: 0
MIS: 0
My question is: Why are the eth0 interrupts distributed
to CPU0 only?
Mogens
--
Mogens Kjaer, Carlsberg A/S, Computer Department
Gamle Carlsberg Vej 10, DK-2500 Valby, Denmark
Phone: +45 33 27 53 25, Fax: +45 33 27 47 08
Email: mk at crc.dk Homepage: http://www.crc.dk
