[ltp] X61s power consumption

[Dmitry E. Mikhailov]

On Friday 23 May 2008 09:34:01 pm Tino Keitel wrote:
> Hi,
>
> what power consumption can I expect from a X61s, 1,6 GHz (L7500) and 2
> GB RAM in a minimal environment (no USB driver loaded, WLAN disabled,
> lowest display brightness, hard disk spun down etc.)?
>
> Regards,
> Tino

On my X41 (2526-67G, 2x512MB DDR2, 1.5GHz Centrino, 40Gb 1.8inch 4200RPM HDD) 
with no X started (init 3), HDD in sleep mode (not rotating), minimal modules 
(see later) I got 9.7 watts consumption and 5.6 wakeups per second according 
to PowerTOP and 641 milliamps of battery current according to tp_smapi.

With normal use (WiFi on, all modules, backlight minimum, X started, Opera 
browser, Gajim.py, hdapsd etc) I got 13.7W power consumption and 280 wakeups 
according to PowerTOP.

IMHO on your X61 you can expect similar numbers.

P.S. kernel 2.6.23.16 patched with high-resolution-timer-5, 
centrino-undervoltage, WiFi power management mode set for maximum battery 
conservation, power governor is ondemand, ethernel WoL disabled.

Minimalistic module list. Could be cleaned further but I'm too lazy for that.

Module                  Size  Used by
tp_smapi               20496  0
thinkpad_ec             7056  1 tp_smapi
nfsd                  204272  17
exportfs                4736  1 nfsd
lockd                  59272  2 nfsd
nfs_acl                 3392  1 nfsd
auth_rpcgss            37984  1 nfsd
autofs4                19076  2
fuse                   42836  1
sunrpc                154460  8 nfsd,lockd,nfs_acl,auth_rpcgss
binfmt_misc            10504  1
dm_mirror              19072  0
dm_multipath           16776  0
dm_mod                 49408  2 dm_mirror,dm_multipath
uinput                  8576  0
rtc_cmos                7136  0
rtc_core               16664  1 rtc_cmos
rtc_lib                 2944  1 rtc_core
video                  18512  0
output                  3648  1 video
sg                     28252  0
ata_piix               16644  3
libata                112496  1 ata_piix
sd_mod                 22736  4
scsi_mod               96072  3 sg,libata,sd_mod