[Coco] Drivewire on a Pi

[Aaron Wolfe]

It's great to see more implementations, but to suggest that my version
causes the Pi to run hot is just silly.

The java DW4 server uses less than 2% (usually less than 1%) of the
Pi's CPU, even while doing several network operations, supporting a
remote GUI, and serving disk sectors simultaneously.  To put that in
perspective, 'top' (the tool I used to watch the CPU use) uses from 1
to 5% itself.

The DW4 server consumes 32MB of ram by default, but only because this
is the Raspian default setting for JVMs.  You can add -Xmx8m as an
argument to limit this to 8MB (or even 4MB, though this will cause DW
to disable caching and the Pi's disk acess is terribly slow so might
have some issues with timeouts).

Even working DW4 as hard as I could with several telnet sessions, disk
copies and running the os9 web server, DW consumed less than 7% of the
total ram in the Pi and less than 2% of the CPU.

Let's not pretend this is a problem.  It is not.

The user interface is not designed for systems as limited as the Pi,
although it does work and seems perfectly usable to me (once it
finally opens).  If you've run any other software on the Pi, you'll
know that long delays watching the CPU pegged at 100% are just part of
the deal.  I use one to run Xastir (ham radio APRS) and fldigi
(another ham program) and they work at the same speed that DW does,
despite being written in other languages.  The SD card is just very
slow, but once disk access is complete the Pi really performs quite
nicely.

In any case, DW4 is usable without the GUI, or you can run the GUI on
another machine.


On Thu, Jun 26, 2014 at 10:30 AM, Juan Castro <jccyc1965 at gmail.com> wrote:
> I coded a C version too. It's kinda terse and doesn't have that much
> configurability, but it serves DSKs (and printing to TXT files) well and
> will surely keep the Pi cooler than anything that needs Java:
>
> http://sourceforge.net/projects/dwlite/
>
>
> On Tue, Jun 24, 2014 at 8:36 PM, Christopher R. Hawks <chawks at dls.net>
> wrote:
>
>> On Tue, 24 Jun 2014 16:15:19 -0300
>> Gustavo Ranaur Schoenaker <ranaur at ranaur.net> wrote:
>>
>> > Hi,
>> >
>> > I´m using all the "holliday" I get from the worldcup to setup a CoCo
>> > system. I'm installing right now the DriveWire on a Raspberry Pi.
>> >
>> > My general idea is to setup a drivewire box, put all the DSKs files
>> > into the SD card and be happy. It would be nice to play CAS files
>> > through the audio output.
>> >
>> > Up to now I installed Drivewirte on the Pi. It works but:
>> >
>> > 1) It's incredbly slow to run the server on the Pi (java in weak
>> > processors is really painful!)
>> > 2) It sometimes gets out of sync os freezes. I need to restart the
>> > server and the CoCo. Any ideas?
>> > 3) Haven't tested MIDI, network and other features. Yet. :)
>> > 4) Can I control (mount/unmount disks) through HBD-DOS? Or only
>> > through OS-9? How?
>> > 5) Still have to try the 3 server. Does it comes with sourcecode?
>>
>> Gustavo:
>>
>>         The '3' version of drivewire server is on sourceforge. The
>> entire project give you all 3 versions of the '3' server (Max,
>> Winder$, and Linux) and the Java '4' version. The linux code is at:
>>
>> http://drivewireserver.cvs.sourceforge.net/viewvc/drivewireserver/drivewireserver/linux/
>>
>>         You can simply download the source (source/drivewire.c) and
>> makefile (build/makefile) and compile it (they can be in the same
>> directory). The Linux version is terminal based and pretty self
>> explanatory (and simple).
>>
>> > BTW is there a sourcecode for cocotape? If not is there something
>> > similar. I could write one, but it is exists already, I prefer.
>> >
>> > If anyone is interested in exchange ideas or getting the .img file
>> > when it ends, just drop a note!
>> >
>>
>>
>>
>>
>> Christopher R. Hawks
>> HAWKSoft
>> --
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>> >what is spamming, to spam?  I have heard this word used, but never
>> >with enough context to be able to get the meaning.
>>
>> The only way to find out is to post to every single newsgroup; that
>> way, you're assured an accurate answer.
>>
>>                 -- rone at netcom.com
>>
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