[Bug 183461] Re: ksoftirqd/1 using 50% CPU or above

[Cam Cope]

I've got the following in top under lucid latest:
  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                                                                                                                         
    4 root      20   0     0    0    0 R   98  0.0   1803:21 ksoftirqd/0 

watching /proc/interrupts isn't very informative. here's what it shows:
# cat /proc/interrupts 
           CPU0       CPU1       
  0:       1846        624   IO-APIC-edge      timer
  1:     103937      21184   IO-APIC-edge      i8042
  6:    1009980    1094791   IO-APIC-edge    
  8:          1          0   IO-APIC-edge      rtc0
  9:     243889         51   IO-APIC-fasteoi   acpi
 12:   10631504         73   IO-APIC-edge      i8042
 16:   16935518   15340624   IO-APIC-fasteoi   uhci_hcd:usb3, nvidia
 18:         30          0   IO-APIC-fasteoi   uhci_hcd:usb8, jmb38x_ms:slot0, ohci1394, mmc0
 19:    6179955       3153   IO-APIC-fasteoi   ata_piix, ata_piix, ehci_hcd:usb1, uhci_hcd:usb5, uhci_hcd:usb7
 21:          0          0   IO-APIC-fasteoi   uhci_hcd:usb4
 22:     336170        149   IO-APIC-fasteoi   HDA Intel
 23:          1       7571   IO-APIC-fasteoi   ehci_hcd:usb2, uhci_hcd:usb6
 30:       1505       4805   PCI-MSI-edge      eth0
NMI:          0          0   Non-maskable interrupts
LOC:  212005467  154165209   Local timer interrupts
SPU:          0          0   Spurious interrupts
PMI:          0          0   Performance monitoring interrupts
PND:          0          0   Performance pending work
RES:   86606397  101594398   Rescheduling interrupts
CAL:      14578       7770   Function call interrupts
TLB:    1927732    1460655   TLB shootdowns
TRM:          0          0   Thermal event interrupts
THR:          0          0   Threshold APIC interrupts
MCE:          0          0   Machine check exceptions
MCP:       1158       1151   Machine check polls

-- 
ksoftirqd/1 using 50% CPU or above
https://bugs.launchpad.net/bugs/183461
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