Raspberry Pi

[tumutbound]

I do see a CPU usage of 95% to 98% when processing those files. Load average is still around 0.60

[Adrian Hudson]

I do see a CPU usage of 95% to 98% when processing those files. Load average is still around 0.60

Thanks for that. I wondered if it was just my setup.

[thecivvie]

At first I was not seeing this but I haven't touched my Pi since installed b3005 and top is reporting 97% usage dropping back down to 13%. I don't know when this started but it was not getting to that level yesterday evening. About to installed b3006 so will continue to monitor

[thecivvie]

Don't know if it is related but I hit 100% and suddenly had some odd data, wind speed of 184km/h, dew point of -31c, low humidity of 9%, oddly all timed the same time. Nothing in MXDiag for that time

[steve]

Could be related, if it wasn't doing anything CPU-intensive at that time, like processing web pages. I'll have to put some more diagnostic logging into the Davis code.

[thecivvie]

Could be related, if it wasn't doing anything CPU-intensive at that time, like processing web pages. I'll have to put some more diagnostic logging into the Davis code.

I use a Fine Offset , not sure what the others use

[steve]

I use a Fine Offset , not sure what the others use

Ah, OK I was confusing it with what is presumably your main station. This is probably just the usual Fine Offset bad data. It's interesting if it was indeed related to the high CPU activity, though.

[thecivvie]

I use a Fine Offset , not sure what the others use

Ah, OK I was confusing it with what is presumably your main station. This is probably just the usual Fine Offset bad data. It's interesting if it was indeed related to the high CPU activity, though.

Sorry wish there was a way to have a signature just for different sections lol. Yeah my main is a Vantage Vue running normal Cumulus. My Pi is Fine Offset.

Next time I sit down to the main station, I plan to stick MX on it

[Adrian Hudson]

There is a file cumulusxml.tpl which is processed to produce cumulusajax.xml that is uploaded to my web site. If I turn processing off, cpu drops to 1-2%.

To contradict myself...
Actually, even with this file removed, on the Pi, processing peaks at 95% to 100% for up to 3 minutes when the standard files are produced and any extra files processed. In fact, its in danger of bumping into the next processing cycle if it takes much longer

[steve]

I put some tracing in to time the creation and FTP of the standard HTML files and graph data files.

On my 8-year old Windows PC:
Create standard files: 0.4 s
Create graph data : 0.2 s
Upload standard files: 15 s
Upload graph data files: 17 s

On my Raspberry PI:
Create standard files: 14s
Create graph data : 7 s
Upload standard files: 13 s
Upload graph data files: 10 s

CPU usage for mono was about 94% during the creation of the files, falling off to below 10% during FTP. The Pi FTP time may be lower because the PC is also doing other web updates at the same time.

I tried the same thing on a USB hard drive, and got pretty much the same timings, which did surprise me. CPU usage was a little lower, at about 90%

[thecivvie]

I got this when I did a screen -r to see what mono was doing

Connected From : 192.168.1.5:51772
Disconnect From : 192.168.1.5:51772
_wapi_connect: error looking up socket handle 0xe
_wapi_connect: error looking up socket handle 0xd

trying to connect to the Pi mono is timing out via browser but top is showing 97% usage to Mono.

Just terminated Mono and restarted

[WoodburyMan]

It might be helpful to list which Pi you're using? My understanding is some are faster than others.

Just ordered a B+ to test with. Should arrive Tuesday. I'll be testing on OSX tonight as well now that my main Windows box is up and running 100% I can play with other OS's.

[steve]

I don't think there's much performance difference between any of them, they all use the same processor. In performance terms, it's roughly equivalent to a 300Mhz Pentium II, circa 1997.

[steve]

trying to connect to the Pi mono is timing out via browser but top is showing 97% usage to Mono.

I'll leave my Pi running with my Fine Offset and uploading to the web, and see if I get any funnies.

[thecivvie]

I have the B+ but the main difference is Ram size A has 256 and B has 512. Cannot recall what the + has different.

Steve I notice no odd data when I got that _wapi_connect error , not that I know what that us anyway lol