[time-nuts] Slightly off-topic: How to take measurements atfixed intervals in Perl

Didier Juges didier at cox.net
Sun Feb 24 09:16:01 EST 2008


This is a very nice thread, in 2 days, I got two very useful utilities :-)
Thanks Tom and John!

I tried Tom's alarm utility while AVG was doing a virus scan on my computer.
This normally slows everything down quite significantly, but alarm kept
ticking regularly and the CPU utilisation of "alarm" never moved higher than
0. I like it.

Under Unix/Linux, the alarm utility is a nice bridge between a simple
sleep() and a cron job.

Thanks again,

Didier KO4BB

> -----Original Message-----
> From: time-nuts-bounces at febo.com 
> [mailto:time-nuts-bounces at febo.com] On Behalf Of Tom Van Baak
> Sent: Saturday, February 23, 2008 11:15 PM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] Slightly off-topic: How to take 
> measurements atfixed intervals in Perl
> 
> > I finally figured it out, and the details are at 
> > http://www.febo.com/pages/perl-alarm-code/index.html if 
> this might be 
> > of interest to any of you.
> > 
> > John
> 
> I ran into the same thing for my lab logging scripts. Instead 
> of using the windows sleep command I wrote an 'alarm' command:
> 
> http://www.leapsecond.com/tools/alarm.c
> http://www.leapsecond.com/tools/alarm.exe
> 
> I use this to periodically snapshot log files, generate 
> plots, and then upload to: http://www.leapsecond.com/lab/lab.htm
> 
> The code should compile on unix systems as well.
> 
> /tvb
> 
> 
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> Version: 7.5.516 / Virus Database: 269.20.9/1294 - Release 
> Date: 2/22/2008 6:39 PM
>  
> 

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Checked by AVG Free Edition. 
Version: 7.5.516 / Virus Database: 269.20.9/1294 - Release Date: 2/22/2008
6:39 PM
 




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