Am 28.09.2013 20:08, schrieb Marc MERLIN:
> On Mon, Sep 23, 2013 at 10:21:23AM +0200, Oleksij Rempel wrote:
>>> Understood, just making sure this was still potentially useful considering
>>> what I found out since my last message.
>>
>> Which version of powertop are you actually using? None of current
>
> The latest, i.e. 2.4.
>
>> versions would show you Watt usage for devices.
>
> Sure it does :)
>
> Summary: 3182.2 wakeups/second, 82.5 GPU ops/seconds, 0.0 VFS ops/sec and
> 33.5%
>
> Power est. Usage Events/s Category Description
> 9.82 W 100.0% Device USB device: Yubico
> Yubike
> 2.67 W 4.1 ms/s 43.2 Process /usr/bin/pulseaudio
> --sta
> 2.58 W 100.0% Device USB device: Integrated
> Ca
> 2.35 W 100.0% Device USB device: BCM20702A0
> (B
> 2.32 W 32.9% Device Display backlight
> 1.39 W 100.0% Device Radio device: btusb
> 343 mW 100.0% Device Radio device:
> thinkpad_ac
ah ok, i see, you right. In usb.cpp:
double usbdevice::power_usage(struct result_bundle *result, struct
parameter_bundle *bundle)
{
double power;
double factor;
double util;
if (rootport || !cached_valid)
return 0.0;
power = 0;
factor = get_parameter_value(index, bundle);
util = get_result_value(r_index, result);
power += util * factor / 100.0;
return power;
}
but, if i understand it correctly, this values are not provided by usb.
If you start "powertop --calibrate" it will switch on/off some devices
and measure global power usage.
--
Regards,
Oleksij
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
