Date: Mon, 04 Mar 2013 16:55:49 +0200 From: Alexander Motin <mav@FreeBSD.org> To: Luigi Rizzo <rizzo@iet.unipi.it> Cc: Davide Italiano <davide@FreeBSD.org>, svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org Subject: Re: svn commit: r247792 - head/sys/dev/syscons Message-ID: <5134B5F5.7000204@FreeBSD.org> In-Reply-To: <20130304144216.GA63659@onelab2.iet.unipi.it> References: <201303041400.r24E0xOo076175@svn.freebsd.org> <20130304144216.GA63659@onelab2.iet.unipi.it>
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On 04.03.2013 16:42, Luigi Rizzo wrote: > On Mon, Mar 04, 2013 at 02:00:59PM +0000, Davide Italiano wrote: >> Author: davide >> Date: Mon Mar 4 14:00:58 2013 >> New Revision: 247792 >> URL: http://svnweb.freebsd.org/changeset/base/247792 >> >> Log: >> MFcalloutng (r244249, r244306 by mav): >> - Switch syscons from timeout() to callout_reset_flags() and specify that >> precision is not important there -- anything from 20 to 30Hz will be fine. >> - Reduce syscons "refresh" rate to 1-2Hz when console is in graphics mode >> and there is nothing to do except some polling for keyboard. Text mode > > just to understand, how does this 1-2Hz affect the respose to keypresses ? > does it mean it takes 0.5..1s to see the keypress ? No, it is a polling for keyboard presence, and its rate already limited to 1Hz by comparing kbd_time_stamp to time_uptime there. -- Alexander Motin
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