[Bug 73930] Unbalanced interrupts for Core 2 Duo

[Konrads Smelkovs]

Public bug reported:

Hello, 
I noticed that interrupts for my PC are unbalanced, and I blame poor performance on that. If there's another place I should report the bug, please redirect.
Here's an output of /proc/interrupts
           CPU0       CPU1
  0:   48158701          0    IO-APIC-edge  timer
  1:     139327          0    IO-APIC-edge  i8042
  7:          0          0    IO-APIC-edge  parport0
  8:          3          0    IO-APIC-edge  rtc
  9:          1          0   IO-APIC-level  acpi
 14:     886587          0    IO-APIC-edge  ide0
 50:    1354439          0   IO-APIC-level  uhci_hcd:usb1, ehci_hcd:usb5
 58:    1606339          0   IO-APIC-level  eth1
 66:    1033814          0   IO-APIC-level  HDA Intel
169:   19382143          0   IO-APIC-level  uhci_hcd:usb4, nvidia
185:          0          0   IO-APIC-level  uhci_hcd:usb3
193:   38405677          0   IO-APIC-level  libata, uhci_hcd:usb2
NMI:          0          0
LOC:   48157199   48157198
ERR:          0
MIS:          0

I tried .17 kernel and rolled out my own .18, same thing.
I have D946GZIS Intel board and this output of cpuinfo
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 15
model name      : Intel(R) Core(TM)2 CPU          6300  @ 1.86GHz
stepping        : 6
cpu MHz         : 1865.103
cache size      : 2048 KB
physical id     : 0
siblings        : 1
core id         : 255
cpu cores       : 1
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 10
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm pni monitor ds_cpl vmx est tm2 cx16 xtpr lahf_lm
bogomips        : 3200.43

processor       : 1
vendor_id       : GenuineIntel
cpu family      : 6
model           : 15
model name      : Intel(R) Core(TM)2 CPU          6300  @ 1.86GHz
stepping        : 6
cpu MHz         : 1865.103
cache size      : 2048 KB
physical id     : 1
siblings        : 1
core id         : 255
cpu cores       : 1
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 10
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm pni monitor ds_cpl vmx est tm2 cx16 xtpr lahf_lm
bogomips        : 3200.43

** Affects: linux-source-2.6.15 (Ubuntu)
     Importance: Undecided
         Status: Unconfirmed

-- 
Unbalanced interrupts for Core 2 Duo
https://launchpad.net/bugs/73930