Hi, I did have the Pi run a minecraft server for the kids prior to making it run pskmail. Minecraft can be quite demanding, it certainly is very demanding when many players are using the server and so I overclocked it. By looking at the blog entry about that I was quite happy to do some overclocking as it should be perfectly fine to do so: http://www.raspberrypi.org/introducing-turbo-mode-up-to-50-more-performance-for-free/ The raspberry will reduce the speed if it should get too hot, mine is not hot at all but I have applied all the heat sinks that are available for it. Yesterday I put a new PSU there that did not QRM as much as the old and decided to launch the server again. Sadly I can now not launch fldigi as it dies complaining it could not find /proc/cpuinfo. I recompiled fldigi but had the same issue so something has happened to it. Perhaps some other upgrade has affected it. I will try to get some time to make it work again this weekend. When I did have it running it did not consume very much cpu, not even when doing PSKR. 73, Per sm0rwo John Douyere skrev 2014-08-29 03:31: > Hi Greg, > > I can't remember saying it was not powerful enough, just that the THOR > modes are more demanding that most of the other modes. > > If I remember well the discussion thread I was asking if the CPU load > was not too high on Raspberry PI as the OM could not decode PSKR > modes. In the end the issue was not with CPU load but a bug in the > Fldigi PSKR code. > > The OM also reported that THOR modes could be decoded. > > Having just converted a few Fldigi modems into Android using not the > Java language but C++ *natively *I have some reasonable idea of the > capability of some of these ARM CPUs without the Java overhead. > > For example a rather old HTC Desire phone can decode PSKR, THOR, > OLIVIA, MFSK and even MT63 2000L without problems. The CPU load does > not exceed 50% which leaves enough room for other processes. > > Looking at the results of benchmarks like the Whetstone Native (not > Java) benchmark results for Raspberry PI on the net I find values of > 95 MFLOPS at 700Mhz CPU clock (the default I understand) and 134 > MFLOPS at 1000Mhz clock speed (over-clocked). > > Compare this to the results of 120 MFLOPS for my HTC desire mentioned > above and you can see that it is very comparable. So in my opinion it > should work on a Raspberry PI, ASSUMING that there no significant > extra overheads introduced by the GUI side of Fldigi + O/S. > > I don't know what Per has done to make it work in terms of > configuration but I would suggest looking at the following: > > - Overclock the Raspberry PI to 800-900MHz (Do some research here as > it seems to be the maximum acceptable long term continuous running > overclock limit). > > - In Fldigi: > > 1. Set the slow CPU option ON. > > 2. IN THOR modem disable filtering, soft-symbol and soft-bit decoding. > > 3. In Audio / Settings I would choose either Linear interpolator or > Fastest Sinc interpolator. > > - Finally and it can be important on some devices, run Fldigi > minimized. This reduces the GUI processing quite significantly > regardless of the settings of the waterfall. > > Maybe Per can detail his configuration to make it work on the > Raspberry PI. > > I believe the Banana PI with it dual core 1GHz ARM-V7 architecture > (including hardware floating point unit) should provide a much lower > CPU load when running Fldigi and a Pskmail server. > > Hope this helps, > > 73, John (VK2ETA) > > > > > On Thu, Aug 28, 2014 at 2:01 AM, Greg <kb1ncj@xxxxxxxxx > <mailto:kb1ncj@xxxxxxxxx>> wrote: > > Greetings Group, > > I see people mention they are setting up servers with these new > micro devices.. I thought I remember when I asked about this maybe > a year ago, John (VK) I think said that they were not powerful > enough especially with the THOR modes... Still true? I would > switch my server out just to save on electric use. > > Also my server was on boot stuck for a few weeks but back on now.. > > Greg > KB1NCJ > >