Re: 2.5.67-mm4 & IRQ balancing

From: Arjan van de Ven (arjanv@redhat.com)
Date: Tue Apr 22 2003 - 05:32:13 EST

>
> Booted with "noirqbalance" & started irqbalance:
>
> $ cat /proc/interrupts
> CPU0 CPU1
> 0: 73897 247288143 IO-APIC-edge timer
> 1: 38421 56 IO-APIC-edge i8042
> 2: 0 0 XT-PIC cascade
> 3: 177 0 IO-APIC-edge serial
> 8: 107607 0 IO-APIC-edge rtc
> 12: 3 0 IO-APIC-edge i8042, i8042, i8042, i8042
> 15: 32 118 IO-APIC-edge ide1
> 18: 12602 1159 IO-APIC-level EMU10K1
> 19: 454172 15987 IO-APIC-level uhci-hcd
> 20: 494005 0 IO-APIC-level eth0
> 22: 717483 38681 IO-APIC-level aic7xxx
> 23: 0 0 IO-APIC-level uhci-hcd
> NMI: 0 0
> LOC: 247366287 247364170
> ERR: 0
> MIS: 0

this looks reasonably in balance; your biggest irq source is the timer,
which gets a cpu all of it's own and the rest of your irq sources is
hardly noticable and all go together on the other cpu for that reason to
counterbalance the "high rate" timer.


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