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

[davidf4]

Well..I've given up on having Xastir running on my poor little PI B...even
with the very latest CVS patches it goes into 100% CPU use trying to display
just Western Wa...in fact, the preliminary patch from Ken worked better than
the latest one...

I'm guessing that the latest updates to the Borg that is SystemD and some of
the font patches along with Xastir just isn't a good mix..

So I'm resurrecting an old Dell 7000 (Pent I, 366 Mhz with just over 300 G
RAM) using Gentoo so I can avoid SystemD...that should give me an always-on
system that doesn't generate too much heat for a home Xastir display..

Dave
KD7MYC



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