Over the past few years, as we've added more experiments, the amount of data transfered from the Science Station at the Leon Mow Radio Observatory to our website here at www.lmro.org.au has greatly increased. While most of the data being uploaded is graphic in nature, in the form of JPG images, it does take time to transfer through our Satellite Modem ground station. For instance the weather station is uploading over a dozen JPG images produced by our Davis Weather Station. In the past this has typically taken several minutes to upload as other experiments also try to send their images to our website.
As a result, we would sometimes see file transfers fail and images would be blank. It was decided some time back (probably a year ago) that we needed to install an FTP (File Transfer) server locally at the Science Station. Experiments would then upload their images to that local server rather than fighting for bandwidth through the modem. The files on the FTP server would then get zipped up every 10 minutes into one single large file and be sent through the modem to our website where they would get unzipped for viewing by website visitors.
Last weekend on the 16th March 2014 we had finalised some programming issues and started to upload files to the new FTP server. After some tweaking we had the system working, with a few issues that still needed adjusting. Now that the new process has been running for a few days it seemed like a good time to check on how well it was working.
All the experiment image files including the PNG file for eCallisto zip up into just over 1 Megabyte. Transfer of the file through the modem from the Science Station to our website now takes around 30 seconds. We now see the Weather Station images with all the same times and we now see complete images rather than half uploaded ones.
There are still a couple of experiments like Radio Jove and the Seismometer that need to be brought back on line but mostly the new system is working nicely. On the right side of the screen our other nifty addition is a Status Box showing whether experiments are uploading correctly to the system. If the experiment is green then has uploaded files in the last 10 minutes. If it shows red then that experiment has stopped uploading.
With thanks to Phil and Robert for their hard work in making this happen.
Comments (2) 18.03.2014. 10:46
We have now finished transferring most of the files from the old LMDSRO.com server to this new LMRO.org.au site. The move has given us quite a few advantages not the least being faster website response and more space for data.
We are also testing a monitor program on the right side of this page showing server status of uploads.
The LMDSRO.com website.
We are discontinuing use of the old website.
Anyone accessing http://www.lmdsro.com will be redirected to http://www.lmro.org.au
If you have any questions please use our 'Contact' page.
Comments (0) 07.02.2014. 21:37
From one of my (and others I know) favorite movies 'Contact',
Ellie: You know, there are 400 billion stars out there, just in our galaxy alone. If only one out of a million of those had planets, all right, and if just one out of a million of those had life, and if just one out of a million of those had intelligent life, there would be literally millions of civilizations out there.
Palmer: Well, if there wasn't, it would be an awful waste of space.
(Ever done the math on this? one million x one million is a Trillion. 400 billion is 0.4 Trillion. I think she was an order of magnitude out.