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From: "Lee Chin" <leechin@mail.com>
To: cat@zip.com.au
Cc: linux-newbie@vger.kernel.org
Subject: Re: usleep
Date: Wed, 11 Jun 2003 20:04:58 -0500	[thread overview]
Message-ID: <20030612010459.63803.qmail@mail.com> (raw)

Sorry everyone, I had initially posed my for loop wrong... I meant to say for(i = 0; i < 1000; i++).

Mark Hahn clarified the issue and usleep is not actually accurate (provably) and the man page actually has a disclaimer.  To me, it seems like usleep(2000) * 50 itterations actually gives a reasonably accurate 1 second delay on machines from 800 mgz to 2 ghz.

Mark Hahn actually gave me some more accurate code to do usleep too.  Thanks Mark!
Thanks
Lee
----- Original Message -----
From: CaT <cat@zip.com.au>
Date: Thu, 12 Jun 2003 09:21:46 +1000
To: Lee Chin <leechin@mail.com>
Subject: Re: usleep

> On Wed, Jun 11, 2003 at 05:55:02PM -0500, Lee Chin wrote:
> > I would think the following code would wait for 1 second each itteration
> > before printing hello, but it waits way too long.  Replacing the for
> > loop body with a usleep(1000000) works great... what am I missing here?
> 
> usleep = micro sleep = sleep in 1/1000000 second incrememnts.
> 
> -- 
> Martin's distress was in contrast to the bitter satisfaction of some
> of his fellow marines as they surveyed the scene. "The Iraqis are sick
> people and we are the chemotherapy," said Corporal Ryan Dupre. "I am
> starting to hate this country. Wait till I get hold of a friggin' Iraqi.
> No, I won't get hold of one. I'll just kill him."
> 	- http://www.informationclearinghouse.info/article2479.htm

-- 
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             reply	other threads:[~2003-06-12  1:04 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-06-12  1:04 Lee Chin [this message]
  -- strict thread matches above, loose matches on Subject: below --
2003-06-12 20:43 usleep Lee Chin
2003-06-12  0:53 usleep Lee Chin
2003-06-12  1:02 ` usleep Mark Hahn
2003-06-12  0:42 usleep Lee Chin
2003-06-11 22:55 usleep Lee Chin
2003-06-11 16:08 ` usleep Alan Bort
2003-06-11 23:21 ` usleep CaT
2003-06-11 23:45 ` usleep Mark Hahn
2003-06-11 23:55 ` usleep Ray Olszewski
2003-06-12  0:17   ` usleep Mark Hahn
     [not found]   ` <Pine.LNX.4.44.0306112015380.20310-100000@coffee.psychology .mcmaster.ca>
2003-06-12  0:38     ` usleep Ray Olszewski
2003-06-11 18:45       ` usleep Alan Bort
2003-06-12  4:14       ` usleep Riley Williams
2003-06-12  7:46         ` usleep Ray Olszewski
2003-06-13  1:23   ` usleep Stephen Samuel
2003-06-12 11:47 ` usleep Steven Smith
2003-06-13  1:16 ` usleep Stephen Samuel
2003-06-13  1:22   ` usleep Mark Hahn

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