From owner-freebsd-hackers  Fri May  3  7:38:50 2002
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Date: Fri, 3 May 2002 10:38:48 -0400 (EDT)
From: Manish Jain <jain@sirius.pc.cis.udel.edu>
To: Paolo Di Francesco <paipai@tin.it>
Cc: <freebsd-hackers@FreeBSD.ORG>
Subject: Re: A time resolution problem
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hi,

one possible solution could be to use gettimeofday (usec resolution )
and do a busy wait in a loop for T sec.

manish
http://www.cis.udel.edu/~jain

On Fri, 3 May 2002, Paolo Di Francesco wrote:

> Hello hackers,
>
> I am trying to write a simple C program that must do some
> specialized things. The idea is that the program must send
> packets each T seconds. Ok, I know.. use the sleep, microsleep
> things, and it works pretty well if the interval is greater than
> 1 msec. (recompiled the kernel with HZ=100000)
>
> Now the problem is that I want to know if it is possible, and
> how, to schedule events with a precision greater (or equal to))
> than 1ms. Maybe an approach with posix timers? Maybe move the app
> into the kernel space? Maybe change the scheduler?
>
> any idea, even the most exotic ones, appreciated!
>
> --
>
> Ciao Ciao
>
>    _
>  ->B<-   All Recycled Bytes Message ...
>    ~
>
>
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