Re: arch/i386/Kconfig: CONFIG_IRQBALANCE Description

[John Stoffel]

>>>>> "Miquel" == Miquel van Smoorenburg <miquels@xxxxxxxxxx> writes:

Miquel> In article <16480.28882.388997.71072@xxxxxxxxxxxxxxxxxx>,
Miquel> John Stoffel <stoffel@xxxxxxxxxx> wrote:
>> 
>> And hey, under 2.6.5-rc2-mm1, it doens't seem to do anything:
>> 
>> > zcat /proc/config.gz | grep IRQ
>> CONFIG_IRQBALANCE=y
>> CONFIG_IDEPCI_SHARE_IRQ=y
>> 
>> > cat /proc/interrupts 
>> CPU0       CPU1       
>> 0:   46272316        487    IO-APIC-edge  timer
>> 1:        376          0    IO-APIC-edge  i8042
>> 16:      46770          3   IO-APIC-level  ide2, ide3, ehci_hcd
>> 17:     307832          1   IO-APIC-level  eth0
>> 18:     118258          1   IO-APIC-level  aic7xxx, aic7xxx, ohci_hcd
>> LOC:   46279245   46279281 

Miquel> Is that real SMP, or hyperthreading? If it's hyperthreading,
Miquel> then it makes sense that the IRQs are not balanced.

It's dual Xeon PIII 550mhz, in a Dell Precision 610MT workstation.
Intel GX chipset.  None of that fancy HT stuff here!

> cat /proc/cpuinfo 
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 7
model name      : Pentium III (Katmai)
stepping        : 3
cpu MHz         : 547.343
cache size      : 512 KB
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 2
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips        : 1077.24

processor       : 1
vendor_id       : GenuineIntel
cpu family      : 6
model           : 7
model name      : Pentium III (Katmai)
stepping        : 3
cpu MHz         : 547.343
cache size      : 512 KB
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 2
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips        : 1093.63

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