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From: Hans Petter Selasky <hselasky@c2i.net>
To: Ed Schouten <ed@80386.nl>
Date: Mon, 3 Aug 2009 11:29:04 +0200
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Cc: src-committers@freebsd.org, svn-src-all@freebsd.org,
	Alfred Perlstein <alfred@freebsd.org>, Robert Watson <rwatson@freebsd.org>,
	Navdeep Parhar <nparhar@gmail.com>, svn-src-head@freebsd.org
Subject: Re: svn commit: r195960 - in head/sys/dev/usb: . controller input
	(regression patch)
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On Monday 03 August 2009 10:28:38 Ed Schouten wrote:
> * Robert Watson <rwatson@FreeBSD.org> wrote:
> > I'm a bit surprised the timed key repeat in this patch would work
> > properly in DDB, as microtime(9) relies on interrupts firing for
> > updated timestamps.  The availability of interrupts for polled input
> > consumers varies, but in general this is not true (for example) at
> > the DDB command prompt.  Does this code work correctly when time
> > stands still?
>
> Apart from that, who gives a *beep* about keyboard repeat while inside
> the debugger. I have to confess it would be irritating to press
> backspace multiple times, instead of holding the key pressed, but still,
> it's not worth it.

I think getmicrotime relies on interrupts, while microtime doesn't.

See "man microtime".

--HPS