On Sun, Apr 04, 2010 at 12:35:15PM +0200, Dominik Brodowski wrote: > Hi Dmitry, > > On Sat, Apr 03, 2010 at 04:53:26PM -0700, Dmitry Torokhov wrote: > > On Sun, Apr 04, 2010 at 12:33:28AM +0200, Dominik Brodowski wrote: > > > > > > 4) SynPS/2 touchpad: > > > Why does moving the touchpad lead to sooo many IRQs? I can't look as fast > > > as the mouse pointer seems to get new data: > > > 62,5% (473,1) <interrupt> : PS/2 keyboard/mouse/touchpad > > > > > > > 80 pps @ 6 bytes/packet = 480 interrupts/sec. > > > > You can try using psmouse.rate=40 to limit it to 40 pps which should > > bring it to the rate of standard PS/2 mouse at the expense of > > sensitivity... > > Excellent. Maybe this could be added to the Tips&Tricks section at the > Powertop website? >
Do not see the point - the touchpad does not generate interrupts while you are not touching it and while you are touching it the machine is not going to sleep. The only reason I see for lowering the rate is if your keyboard contrioller can not handle it (some Toshibas couldn't). > I guess obtaining all 6 bytes at once is not really possible? No. i8042 is byte-oriented. > It > seems a new byte only appears ~1.75 ms after the last one, at least on my > notebook, so waiting for this is not an option... > > Best, > Dominik > > > PS: Dmitry, got something small for you in return: Thanks, will apply. > > > [PATCH] i8042: spelling fix > > Signed-off-by: Dominik Brodowski <[email protected]> > > diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c > index 9302ba0..f61233e 100644 > --- a/drivers/input/serio/i8042.c > +++ b/drivers/input/serio/i8042.c > @@ -38,7 +38,7 @@ MODULE_PARM_DESC(noaux, "Do not probe or use AUX (mouse) > port."); > > static bool i8042_nomux; > module_param_named(nomux, i8042_nomux, bool, 0); > -MODULE_PARM_DESC(nomux, "Do not check whether an active multiplexing > conrtoller is present."); > +MODULE_PARM_DESC(nomux, "Do not check whether an active multiplexing > controller is present."); > > static bool i8042_unlock; > module_param_named(unlock, i8042_unlock, bool, 0); -- Dmitry _______________________________________________ Power mailing list [email protected] http://www.bughost.org/mailman/listinfo/power
