Thoughts on the output from a VGN-AR41E

[eaglex]

Hello,

Any thoughts on the below powertop output? Is it good? is it bad? any
room for improvements?

---------------- cut ------------------------------

Cn                Avg residency       P-states (frequencies)
C0 (cpu running)        ( 9,8%)         1,81 Ghz     2,5%
C1                0,0ms ( 0,0%)         1,80 Ghz     0,0%
C2                0,0ms ( 0,0%)         1200 Mhz     1,1%
C3                3,3ms (90,2%)          800 Mhz    96,4%


Wakeups-from-idle per second : 276,7    interval: 10,0s
Power usage (ACPI estimate): 22,0W (1,9 hours) (long term: 27,6W,/1,5h)

Top causes for wakeups:
  17,1% ( 79,9)       <interrupt> : extra timer interrupt
  14,4% ( 67,1)       firefox-bin : futex_wait (hrtimer_wakeup)
  13,0% ( 60,8)       <interrupt> : uhci_hcd:usb3, tifm_7xx1, yenta,
ohci1394, nvidia
  11,5% ( 53,7)       firefox-bin : schedule_timeout (process_timeout)
   9,5% ( 44,5)       <interrupt> : acpi
   7,5% ( 35,2)       <interrupt> : uhci_hcd:usb6
   7,5% ( 35,2)   USB device  6-1 : PS/2+USB Mouse ()
   6,3% ( 29,4)      <kernel IPI> : Rescheduling interrupts
   4,4% ( 20,3)       <interrupt> : iwl3945
   3,1% ( 14,6)                 X : do_setitimer (it_real_fn)
   0,9% (  4,0)     <kernel core> : usb_hcd_poll_rh_status (rh_timer_func)
   0,9% (  4,0)   xfce4-netload-p : schedule_timeout (process_timeout)
   0,8% (  3,6)       soffice.bin : schedule_timeout (process_timeout)
   0,5% (  2,3)             irssi : schedule_timeout (process_timeout)
   0,4% (  2,0)   xfce4-battery-p : schedule_timeout (process_timeout)
   0,3% (  1,6)       <interrupt> : PS/2 keyboard/mouse/touchpad
   0,2% (  1,0)              ntpd : do_setitimer (it_real_fn)
   0,2% (  1,0)       xfce4-panel : schedule_timeout (process_timeout)
   0,2% (  1,0)    wpa_supplicant : schedule_timeout (process_timeout)
   0,2% (  1,0)                 X : nv_start_rc_timer (nv_kern_rc_timer)
   0,2% (  0,9)   xfce4-mixer-plu : schedule_timeout (process_timeout)
   0,1% (  0,5)           iwl3945 : ieee80211_sta_work (ieee80211_sta_timer)
   0,1% (  0,5)           wpa_cli : schedule_timeout (process_timeout)
   0,1% (  0,4)     <kernel core> : sk_reset_timer (tcp_delack_timer)
   0,1% (  0,3)     <kernel core> : rs_tx_status (iwl3945_bg_rate_scale_flush)
   0,0% (  0,2)     <kernel core> : neigh_table_init_no_netlink
(neigh_periodic_timer)
   0,0% (  0,2)            pidgin : schedule_timeout (process_timeout)
   0,0% (  0,2)                 X : schedule_timeout (process_timeout)
   0,0% (  0,2)              init : schedule_timeout (process_timeout)
   0,0% (  0,2)       firefox-bin : sk_reset_timer (tcp_write_timer)
   0,0% (  0,1)          gconfd-2 : schedule_timeout (process_timeout)
   0,0% (  0,1)     <kernel core> : inet_initpeers (peer_check_expire)
   0,0% (  0,1)   <kernel module> : sta_info_start (sta_info_cleanup)
   0,0% (  0,1)       soffice.bin : futex_wait (hrtimer_wakeup)
   0,0% (  0,1)         xfdesktop : schedule_timeout (process_timeout)
   0,0% (  0,1)            screen : do_setitimer (it_real_fn)

---------------- cut ------------------------------