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From: "Lee Chin" <leechin@mail.com>
To: 333101@personal.net.py
Cc: hahn@physics.mcmaster.ca, linux-newbie@vger.kernel.org
Subject: Re: usleep
Date: Wed, 11 Jun 2003 19:42:28 -0500	[thread overview]
Message-ID: <20030612004228.40595.qmail@mail.com> (raw)

I'm not sure what you are saying, but yes there are 1 million microseconds in a second.... 1000000 micro seconds that is.  So my loop seems correct.  Also, I am running this on a 2 GhZ processor, so I doubt the 1000 calls to usleep can add that much overhead.  I think something is wrong with the library or the kernel.
----- Original Message -----
From: Alan Bort <333101@personal.net.py>
Date: 11 Jun 2003 19:08:34 +0300
To: Lee Chin <leechin@mail.com>
Subject: Re: usleep

> for the #include statemen I assume you are using some sort of C
> languagbe (even C, C++ or C#) Well... my man of usleep says that it
> makes the system wait for any number of microseconds... make the maths.
> 
> Anyway... I really don't remebmer the value of a microsecond... I THINK
> it was something like "1 x 10 ^ -6" or something alike... (excuse the
> quotation aberration).
> 
> 
> El jue, 12-06-2003 a las 01:55, Lee Chin escribió:
> > 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?
> > 
> > Thanks
> > Lee
> > 
> > #include <unistd.h>
> > 
> > int main()
> > {
> >     while (1)
> >     {
> >         int i;
> > 
> >         printf("hello\n");
> >         for(i = 0; i < 50; i++)
> >         {
> >             usleep(1000);
> >         }
> > 
> >     }
> > 
> > }
> -- 
> Alan Bort
> Linux Registered User 298277 -Country Manager- [http://counter.li.org]
> [ http://www.linuxquestions.org ] Username: Ciccio
> [ http://es.tldp.org ]
> Ciccio.-
> 

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             reply	other threads:[~2003-06-12  0:42 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-06-12  0:42 Lee Chin [this message]
  -- strict thread matches above, loose matches on Subject: below --
2003-06-12 20:43 usleep Lee Chin
2003-06-12  1:04 usleep Lee Chin
2003-06-12  0:53 usleep Lee Chin
2003-06-12  1:02 ` usleep Mark Hahn
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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