Re: [Mactel-linux-devel] C4 state - Status report

[Sven A. <an...@an...>]

Nicolas Boichat schrieb:
> Hi,
> 
> Wow, impressive report, that's really unfortunate and frustrating it
> doesn't really helps us to improve power management on Linux...
> 
>>> The following hopes I have:
>>>
>>>  1) The auto USB suspend framework will solve the too-many interrupts problems.
> 
> Have you tried this kernel option?
> CONFIG_USB_SUSPEND: USB selective suspend/resume and wakeup (EXPERIMENTAL)

What I meant was the new "autosuspend" parameter of the "usbcore":

anders@applecar:~$ modinfo usbcore
filename:       /lib/modules/2.6.21-rc6-mm1-mactel/kernel/drivers/usb/core/usbcore.ko
license:        GPL
vermagic:       2.6.21-rc6-mm1-mactel SMP preempt mod_unload CORE2
parm:           usbfs_snoop:true to log all usbfs traffic (bool)
parm:           use_both_schemes:try the other device initialization scheme if the first one fails (bool)
parm:           old_scheme_first:start with the old device initialization scheme (bool)
parm:           blinkenlights:true to cycle leds on hubs (bool)
parm:           autosuspend:default autosuspend delay (int)

The last one here - I'm currently testing is...

> Looks interesting... You might be able to disable some devices and see
> if it improves power consumption...
> 
>>>  2) The dyn-ticks patches will allow the processor to sleep longer.
> 
> At least in the current version, it doesn't help at all unfortunately.

Best regards,
 Sven

-- 
 Sven Anders <an...@an...>                 () Ascii Ribbon Campaign
                                                 /\ Support plain text e-mail
 ANDURAS service solutions AG
 Innstraße 71 - 94036 Passau - Germany
 Web: www.anduras.de - Tel: +49 (0)851-4 90 50-0 - Fax: +49 (0)851-4 90 50-55

Rechtsform: Aktiengesellschaft - Sitz: Passau - Amtsgericht Passau HRB 6032
Mitglieder des Vorstands: Sven Anders, Marcus Junker
Vorsitzender des Aufsichtsrats: Dipl. Kfm. Thomas Träger