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Download of AIP-data via WLAN extremly slow


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wvolmer2
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I upraded one of my iPad mini to very latest iOS 12.1 last night (It think Apple released it yesterday)

And the device now replicates the AIP files just fine. There are large files in the French AIP (> 17 MB), where my iPad was stuck before.

(in order to stress test this a bit I deleted the entire French AIP before, to get it all loaded again)

Not sure if iOS 12.1 made this happen, but something has changed to the better.

Wolfgang


Edited 11/1/2018 9:39:13 AM by wvolmer2
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Tim Dawson - 10/31/2018 1:01:33 PM
This is really strange, because it's the exact same code that runs to download a plate individually as runs when it's doing it as part of a batch.

I tried it from home last night and it worked perfectly quick.

There seem to be two different issues here, the first is general slowness during a download and the second is an actual hang of the software.

You'd have thought but there's obviously some form of queue processing going on with the batch download. Also - with regards hanging - I think that the 'Cancel' button only responds between individual file downloads, not as a separate thread - so if you encounter a particularly large file, the cancel button will not work until it has downloaded that file.

Downloading individual files seems fine - and using this mechanism to 'unblock' the batch processing has allowed me to download the AIP updates I need - so there is a work around.

Definitely only been an issue since the last update and seems independent of IOS version - Can't say why it's working for some and not for others though. 


Tim Dawson
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This is really strange, because it's the exact same code that runs to download a plate individually as runs when it's doing it as part of a batch.

I tried it from home last night and it worked perfectly quick.

There seem to be two different issues here, the first is general slowness during a download and the second is an actual hang of the software.

EGBPdriver
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wvolmer2 - 10/30/2018 5:20:48 PM
I experience the same issue on three iPad mini, all with iOS 12.01, latest Skydemon version:With a WiFi connection AIP files take a very long to load.Approach Charts from my DFS subscription show same issue, but here the load even stops for larger files. Can then only stop Skydemon with the Task Manager. Wolfgang

Thanks Wolfgang.

I had the same problem with it stopping with particularly large files. I found that if you make a note of the file name, then find the file in the AIP section and download it individually it downloads quickly - it also then unblocks the downloading of other files behind it.

Hope this helps !!!


wvolmer2
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I experience the same issue on three iPad mini, all with iOS 12.01, latest Skydemon version:

With a WiFi connection AIP files take a very long to load.
Approach Charts from my DFS subscription show same issue, but here the load even stops for larger files. Can then only stop Skydemon with the Task Manager.

Wolfgang
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Tim Dawson - 10/30/2018 11:22:26 AM
Our office isn't linked in any way to our datacentre. All I can say is that this doesn't appear to be a widespread issue, and would encourage you to try it on another network. I will happily try it from home later too.

Tim - I have made some more progress on this.

I have the issue with slow downloads when I select a country and press the 'download' button in the top right corner of the screen. 

You recall I mentioned the 17MB Supplement file 2018-217 in the French AIP that was blocking other downloads? Well I went to the Supplements folder and found that file and downloaded it individually - it took just over a second..... 

I did the same with other large files and they downloaded quickly too.

So whatever it is, seems to be linked to when you use the 'download' button as opposed to downloading individually (but obviously you can't download them all individually - but if there is a file causing a blockage, you can clear it by downloading that one file individually).

Hope this helps !!


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Paul Linzner - 10/30/2018 4:57:50 PM

I have the same problem downloading Charts via wlan! It takes hours! I tried it in office and at home. No difference. The download quits sometimes when downloading bigger files. 

About two weeks ago, in an urgent circumstances, I did the download with the mobilenet until my data credits were finished for this month! But it worked fine!!

Paul Linzner


My chart download is very quick. I even tried to download some charts I have never downloaded before just to rule out some caching - but it's still quick.

Paul Linzner
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I have the same problem downloading Charts via wlan! It takes hours! I tried it in office and at home. No difference. The download quits sometimes when downloading bigger files. 

About two weeks ago, in an urgent circumstances, I did the download with the mobilenet until my data credits were finished for this month! But it worked fine!!

Paul Linzner


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If you could that would be great.

We've used cloud services before and our admins prioritised head office network traffic so that other traffic would not interrupt our code updates, etc.

I thought it was just me until yesterday and I had the same problem on another network, which is why I came on the forum and found that others have had the same problem. 
I guess now we're nearly in November, how many members are updating their AIP document caches??

Tim Dawson
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Our office isn't linked in any way to our datacentre. All I can say is that this doesn't appear to be a widespread issue, and would encourage you to try it on another network. I will happily try it from home later too.
GO

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