lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Sun, 4 Apr 2010 12:35:15 +0200
From:	Dominik Brodowski <linux@...inikbrodowski.net>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>, power@...host.org
Cc:	linux-kernel@...r.kernel.org,
	Arjan van de Ven <arjan@...ux.intel.com>
Subject: Re: A few questions and issues with dynticks, NOHZ and powertop

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?

I guess obtaining all 6 bytes at once is not really possible? 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:


[PATCH] i8042: spelling fix

Signed-off-by: Dominik Brodowski <linux@...inikbrodowski.net>

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);
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists