Date: Tue, 21 Nov 2000 19:41:38 -0800 From: Alfred Perlstein <bright@wintelcom.net> To: Chris Hill <chris@monochrome.org> Cc: bsdnewbie bsdnewbie <bsdnewbie@hotmail.com>, freebsd-questions@FreeBSD.ORG Subject: Re: _ DELAY(1) == delay 1 us ? 1 ms ? hz = ? Message-ID: <20001121194138.F18037@fw.wintelcom.net> In-Reply-To: <Pine.BSF.3.96.1001121222732.66703P-100000@localhost>; from chris@monochrome.org on Tue, Nov 21, 2000 at 10:32:38PM -0500 References: <F239Teip68V8zDv60gx0000162e@hotmail.com> <Pine.BSF.3.96.1001121222732.66703P-100000@localhost>
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* Chris Hill <chris@monochrome.org> [001121 19:32] wrote: > On Wed, 22 Nov 2000, bsdnewbie bsdnewbie wrote: > > > I see many DELAY() in some kernel source code, but I can not make clear how > > long does DELAY() delay. DELAY(1) = ? And what is hz, hz = ? > > bash-2.02$ man delay > No manual entry for delay > > Can't answer the first part, but I imagine that hz means Hertz, properly > abbreviated as Hz. 1 Hz is 1 cycle per second or one second per cycle. > Metric prefixes apply, therefore 1 kHz = 1000 cycles per second (0.001 > seconds or 1 ms per cycle), and so on. I just committed a manpage for DELAY(9). hz is usually 100. -- -Alfred Perlstein - [bright@wintelcom.net|alfred@freebsd.org] "I have the heart of a child; I keep it in a jar on my desk." To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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