On May 12 2007 22:12, Alistair John Strachan wrote: >On Saturday 12 May 2007 00:07:18 Arjan van de Ven wrote: >> What's eating the battery life of my laptop? Why isn't it many more >> hours? Which software component causes the most power to be burned? >> These are important questions without a good answer... until now. > >This is a really great tool and presents a very intuitive alternative to the >timer stats file.. > >On a Core 2 Duo Macbook, Linux always gets around 3.2h battery, OS X about >4.2h. This tool has identified that uhci_hcd is where 75% of the ticks are >going when X is not loaded. Unloading uhci_hcd drops the battery life back to >around 4.2h, but I lose the keyboard. > >Is there any way to find out what USB driver is causing usb_uhci to be this >busy? At its worst, it _is_ the USB chip that draws the power when it is active (when uhci_hcd is loaded); does not need to be usbhid or so. Jan -- - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
