Cn                Avg residency       P-states (frequencies)
C0 (cpu running)        (31.4%)         2.17 Ghz     0.7%
C1                0.0ms ( 0.0%)         1.67 Ghz     0.0%
C2                0.0ms ( 0.1%)         1333 Mhz     0.0%
C3                0.1ms (68.5%)         1000 Mhz    99.3%


Wakeups-from-idle per second : 10832.0  interval: 10.0s
Power usage (5 minute ACPI estimate) :   0.2 W (463.8 hours left)

Top causes for wakeups:
  17.4% ( 53.1)      <kernel IPI> : Rescheduling interrupts
  15.7% ( 48.1)       <interrupt> : uhci_hcd:usb1, ehci_hcd:usb5
  15.7% ( 48.1)   USB device 5-5.4 : Optical USB Mouse (Logitech)
  13.3% ( 40.7)       <interrupt> : extra timer interrupt
   6.7% ( 20.5)              Xorg : do_setitimer (it_real_fn)
   6.6% ( 20.3)           knotify : schedule_timeout (process_timeout)
   5.1% ( 15.5)            kicker : schedule_timeout (process_timeout)
   3.3% ( 10.0)         S11dmraid : ehci_work (ehci_watchdog)
   2.4% (  7.4)             artsd : schedule_timeout (process_timeout)
   2.3% (  6.9)   thunderbird-bin : futex_wait (hrtimer_wakeup)
   1.6% (  4.9)            dhcdbd : schedule_timeout (process_timeout)
   1.2% (  3.7)           konsole : schedule_timeout (process_timeout)
   1.0% (  3.1)       <interrupt> : libata
   0.8% (  2.3)       vmware-tray : schedule_timeout (process_timeout)
   0.7% (  2.2)       <interrupt> : iwl3945, pciehp, eth0
   0.7% (  2.0)     passkey-agent : schedule_timeout (process_timeout)
   0.6% (  1.7)      <kernel IPI> : TLB shootdowns
   0.3% (  1.0)              wppq : do_setitimer (it_real_fn)
   0.3% (  1.0)          ifconfig : b44_open (b44_timer)
   0.3% (  1.0)           klipper : schedule_timeout (process_timeout)
   0.3% (  1.0)             artsd : do_setitimer (it_real_fn)
   0.3% (  1.0)             watch : do_nanosleep (hrtimer_wakeup)
   0.3% (  1.0)          kwrapper : do_nanosleep (hrtimer_wakeup)
   0.3% (  1.0)        atieventsd : schedule_timeout (process_timeout)
   0.3% (  0.9)       firefox-bin : futex_wait (hrtimer_wakeup)
   0.3% (  0.8)     <kernel core> : cfq_completed_request (cfq_idle_slice_timer)
   0.2% (  0.6)        kjobviewer : schedule_timeout (process_timeout)
   0.2% (  0.5)        suspend.sh : queue_delayed_work_on (delayed_work_timer_fn)
   0.2% (  0.5)     <kernel core> : neigh_table_init_no_netlink (neigh_periodic_timer)
   0.2% (  0.5)     <kernel core> : queue_delayed_work_on (delayed_work_timer_fn)
   0.2% (  0.5)               gpm : do_nanosleep (hrtimer_wakeup)
   0.1% (  0.4)              kded : schedule_timeout (process_timeout)
   0.1% (  0.4)             kirqd : schedule_timeout (process_timeout)
   0.1% (  0.2)       <interrupt> : PS/2 keyboard/mouse/touchpad

Suggestion: Disable the CONFIG_IRQBALANCE kernel configuration option.
The in-kernel irq balancer is obsolete and wakes the CPU up far more than needed.

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