[Xastir] Raspberry PI B ...

[Dexter N Muir]

On 20/04/16 07:00, xastir-request at lists.xastir.org wrote:

....
> Today's Topics:
>
>     1. Re: Raspberry PI B, Rasbian Jessie, and Xastir = 100% cpu
>        (davidf4)
....
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 18 Apr 2016 19:09:14 -0700
> From: "davidf4" <davidf4 at mindspring.com>
> To: "'Xastir - APRS client software discussion'"
> 	<xastir at lists.xastir.org>, <n7ipb at wetnet.net>
> Subject: Re: [Xastir] Raspberry PI B, Rasbian Jessie, and Xastir =
> 	100% cpu
> Message-ID: <007301d199e0$7a838a20$6f8a9e60$@com>
>
> Status: with only 25 stations on screen (out of 1484), it's pegged at 100%
>
Back to basics: have you checked ground-level configuration? Menu > 
Preferences  > Raspberry Pi Configuration, Performance tab: Overclock. I 
have mine set at High (950 MHz), and I suspect most units will be stable 
at that. This allows xastir to fully render the screen and drop back to 
around 20% CPU usage in a reasonable time.

I find zoom level 256-512 (OR the menu's selection of 1024) more than 
adequate for local coverage - 8192 encompasses the whole of NZ, and 
across the Tasman to Aussie.  That takes around 20 seconds to render 
(mapnik in Map Chooser), so patience is the requisite virtue :) . I have 
my locality as a Bookmark at zoom 400, which shows all of the local APRS 
repeater's coverage, and a bit more. My (small) town shows well at zoom 40.

I run this 24/7 online (no RF), and concurrently use amule for a 
file-share "collector" of rarities, at around 60-80% usage.

Hopefully helpfully ...
73, Dex ZL2DEX