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SubjectRe: cpu load balancing problem on smp
Arjan van de Ven wrote:
> Marc Donner wrote:
>>>
>>> see http://www.irqbalance.org to get irqbalance
>>
>> I now have tried irqloadbalance, but the same problem.
>
>
> can you send me the output of
>
> cat /proc/interrupts
>
> (taken when you are or have been loading the network)
>
> maybe there's something fishy going on
> -
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>
Please take a look at this, taken from the same machine running
different vanilla kernels on fc6.
Current 2.6.19 fedora kernel, looks like 2.6.20rc3 (non mm) in the
attachment.

2.6.20-rc3
[root@squid ~]# rpm -q irqbalance
irqbalance-0.55-2.fc6
[root@squid ~]# uptime
11:51:50 up 6 days, 30 min, 3 users, load average: 5.31, 5.08, 4.02
[root@squid ~]# service irqbalance status
irqbalance (pid 2310) is running...
[root@squid ~]# cat /proc/interrupts
CPU0 CPU1 CPU2 CPU3
0: 520209517 0 0 0 IO-APIC-edge timer
1: 12 0 0 0 IO-APIC-edge i8042
8: 1 0 0 0 IO-APIC-edge rtc
9: 0 0 0 0 IO-APIC-fasteoi acpi
12: 103 0 0 0 IO-APIC-edge i8042
14: 0 0 0 0 IO-APIC-edge libata
15: 0 0 0 0 IO-APIC-edge libata
20: 138736 188194096 0 6797630 IO-APIC-fasteoi libata
22: 0 0 0 0 IO-APIC-fasteoi uhci_hcd:usb2, uhci_hcd:usb4
23: 0 0 0 0 IO-APIC-fasteoi uhci_hcd:usb1, uhci_hcd:usb3, ehci_hcd:usb5
2296: 1367 0 0 849270653 PCI-MSI-edge eth1
2297: 1022 835083968 0 0 PCI-MSI-edge eth0
NMI: 47756 146249 47617 146186
LOC: 516828752 517331906 516828611 517331771
ERR: 0
2.6.20-rc3-mm1
[root@squid kernel]# uptime
12:17:54 up 1 day, 21:58, 2 users, load average: 9.47, 9.79, 10.28
[root@squid kernel]# cat /proc/interrupts
CPU0 CPU1 CPU2 CPU3
0: 60031592 61350247 22273772 21780215 IO-APIC-edge timer
1: 0 6 1 1 IO-APIC-edge i8042
8: 0 0 1 0 IO-APIC-edge rtc
9: 0 0 0 0 IO-APIC-fasteoi acpi
12: 148 283 104 136 IO-APIC-edge i8042
14: 0 0 0 0 IO-APIC-edge libata
15: 0 0 0 0 IO-APIC-edge libata
20: 10482795 1477821 93306 641628 IO-APIC-fasteoi libata
22: 0 0 0 0 IO-APIC-fasteoi uhci_hcd:usb2, uhci_hcd:usb4
23: 0 0 0 0 IO-APIC-fasteoi uhci_hcd:usb1, uhci_hcd:usb3, ehci_hcd:usb5
2296: 427 426 436 134563009 PCI-MSI-edge eth1
2297: 252 252 135926471 257 PCI-MSI-edge eth0
NMI: 0 0 0 0
LOC: 164661140 165163503 164660992 165163305
ERR: 0
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