Re: SMP broken on Dell PowerEdge 4100/200 under 2.6.0-testxx?

[Ethan Weinstein]

Colin Coe wrote:
> Sorry about the delay.
>
> Booted with noirqbalance.
>
> [root@host root]# cat /proc/interrupts
>            CPU0       CPU1
>   0:    7411777    5971987    IO-APIC-edge  timer
>   1:          7          4    IO-APIC-edge  i8042
>   2:          0          0          XT-PIC  cascade
>   4:         16         42    IO-APIC-edge  serial
>   5:       4915       4820   IO-APIC-level  eth1
>  10:         67         69   IO-APIC-level  aic7xxx
>  11:        325        266   IO-APIC-level  eth0
>  12:         47        109    IO-APIC-edge  i8042
>  14:          0          0   IO-APIC-level  CS46XX
>  15:       6398       6401   IO-APIC-level  megaraid
> NMI:          0          0
> LOC:   13383659   13383658
> ERR:          0
> MIS:          0
>
> That looks a lot better...
>
> Thanks!
>
> --
> "Obnoxious frog..." Spike, 2071AD
>
> William Lee Irwin III said:
>
> > On Sat, Dec 06, 2003 at 01:48:54PM +1100, Nick Piggin wrote:
> >
> > > Although in this case Colin has 2 PPro 200s.
> > > Colin - process load should be evenly distributed between CPUs, and this
> > > is generally the most important thing. Big networking loads (most
> > > commonly)
> > > can put a lot of time into processing interrupts though.
> >
> > That is rather busted, then.
> >
> > Colin, could you try booting with noirqbalance on the kernel command
> > line?
> >
> >
> > -- wli

I'll throw my hat in here as well.  This is an old compaq proliant I 
have at the office- dual 400 PII, booted with "noirqbalance" 2.6.0-test11:

           CPU0       CPU1
  0:    2580383    1920931    IO-APIC-edge  timer
  1:          6          3    IO-APIC-edge  i8042
  2:          0          0          XT-PIC  cascade
  5:        467        423   IO-APIC-level  TLAN
  8:          1          0    IO-APIC-edge  rtc
  9:         15         15   IO-APIC-level  sym53c8xx
 10:         17         17   IO-APIC-level  sym53c8xx
 11:       1602       1593   IO-APIC-level  ida0
 14:          8          2    IO-APIC-edge  ide0
NMI:          0          0
LOC:    4501366    4501354
ERR:          0
MIS:          0

witout "noirqbalance" we interrupt on CPU0 solely.

-E
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