[OZAPRS] Compiling aprsd

Russell ashdown at hunterlink.net.au
Sun Jun 12 01:07:20 EST 2011


HI Damien

Just reading the mail.

It has been raining all afternoon and night, I'd say at least an 1" +, also
pretty cool, don't rush home

Good to see you have your antenna sorted.

Russ  VK2VK



-------Original Message-------

From: Damien Gardner Jnr
Date: 12/06/2011 00:49:22
To: Australian APRS Users
Subject: Re: [OZAPRS] Compiling aprsd
 
On 12/06/2011, at 12:23 AM, Peter Illmayer wrote:
 
> Hi Smee :-)
>
> Thanks for the details, I saw the T2's were running Java but didn't
connect the dots :-)  We're getting Alice Springs into APRS and I'm going to
run the I-gate on the IRLP node....Hopefully the box has enough grunt to run
JAVA.. Is the combination "leaky", do we need to regularly reboot ?
 
Second:~# w
  00:42:00 up 258 days,  4:33,  1 user,  load average: 0.00, 0.00, 0.00
 
Nope, you won't have to reboot ;)
 
*grin* If you can run a c app, you can run a Java app :-p  Unless the person
writing the Java app is a lousy programmer, there's really no difference in
performance/memory usage ;)  I have a little Java app at work, receiving
~5000 SNMP traps/minute, queuing them up for a processing task which kicks
off every 30 seconds to work out whether to log them to DB for human viewing
 ignore them, or dump them into our alerting system - it peaks out around
6mbytes of ram, and drops back to a steady 538kbytes after the forced
garbage collection after each processing run :)
 
Javaprsd *did* once have a fairly hefty CPU footprint (well technically it
was all in iowait), but that seems to have been cleaned up in the last year
or so :)  Though it has a pretty hefty memory footprint - currently sitting
at 121mbytes, which seems FAR more than it should be, for what it's doing.. 
Although it would appear to be running on jdk1.5.0 beta 2 here, so it's
possibly there's a memory leak in the JDK itself :-p
 
Cheers,
 
DG
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