Re: [Xastir] Raspberry PI B ...

[David Flood]

I was running a box stock configuration but just for fun I dropped the GPU 
memory down to minimum, overlocked to 900 MHz, unplugged the external USB drive 
that isn't used by Raspian (I dual boot on a 64G card between Raspian and 
Gentoo, trying to get rid of SystemD), and rebooted.

Within 15 minutes of launching it was back at 100% and stuck there...

Ken, I know that you have some test files.  I can probably find time to play 
with them if you'll send them.  As an alternative I could loan you the PI at 
next week's Brunch (I know this week is FEST)...


-Original Message-
>From: Dexter N Muir 
>Sent: Apr 19, 2016 1:55 PM

>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.
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Re: [Xastir] Raspberry PI B ...

[Dexter N Muir]

On 20/04/16 07:00, xastir-requ...@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" <davi...@mindspring.com>
To: "'Xastir - APRS client software discussion'"
<xastir@lists.xastir.org>, <n7...@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

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Re: [Xastir] Raspberry PI B, Rasbian Jessie, and Xastir = 100% cpu

[davidf4]

Send away!

-Original Message-
From: Ken Koster [mailto:n7...@wetnet.net]
Sent: Monday, April 18, 2016 8:27 PM

Ok,  something is clearly not right.   I'll run a couple of tests and
package
up some test files if you have the time.   It would be nice to track it down

and at least understand it.



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Re: [Xastir] Raspberry PI B, Rasbian Jessie, and Xastir = 100% cpu

[davidf4]

Status: with only 25 stations on screen (out of 1484), it's pegged at 100%

-Original Message-
From: Xastir [mailto:xastir-boun...@lists.xastir.org] On Behalf Of davidf4
Sent: Sunday, April 17, 2016 9:56 PM

>Does it use 100% even if only a few stations are displayed?

I've fired it back up and zoomed in to 256 around my icon...I'll let you
know what happens once I get home from work Monday.

>If you like I can send you a file without the refresh changes to try.

I probably won't have that many ATU's during the week but I'm willing to
play...



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Re: [Xastir] Raspberry PI B, Rasbian Jessie, and Xastir = 100% cpu

[davidf4]

-Original Message-
From: Ken Koster [mailto:n7...@wetnet.net]
Sent: Sunday, April 17, 2016 9:41 PM

>Does it use 100% even if only a few stations are displayed?

I've fired it back up and zoomed in to 256 around my icon...I'll let you
know what happens once I get home from work Monday.

>If you like I can send you a file without the refresh changes to try.

I probably won't have that many ATU's during the week but I'm willing to
play...



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