Messages in this thread | | | Date | Sun, 4 Apr 2010 12:47:08 +0200 | From | Dominik Brodowski <> | Subject | Re: A few questions and issues with dynticks, NOHZ and powertop |
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Hey,
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...
as a sidenote: if we know -- like here -- that the next IRQ will be issued soon, in approximately 1.75 ms (well, at least on my system), might it make sense to make tick_nohz_get_sleep_length() smarter to know about this?
Best, Dominik
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