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Flightplanning proves difficult


leif
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 leif
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I use EV mainly for flight planning.  This is still a troublesome undertaking.

The app needs a long time to start.  When zooming or panning is tried too early it will often crash.  Whenever EV is put to the background to use a browser or email or  something else, it will often restart from new.  That is annoying, as the last map position is lost.  Even if it is still running, it will often freeze or show signs of corruption.

As I mentioned before, the scrolling of various pages is either slow or extremely fast. Hitting the ATC endurance is a challenge on my iPad.

The Weblinks of many airports on the Detail page don’t work.  I.e. ESOK , ESGT.

 

 

 

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Stewart Buckingham
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Leif, what device are you using for EasyVFR4 - the things you report (here and in another recent post elsewhere) are all signs of a device that barely has enough capacity to run EasyVFR4 properly.

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5c1242ce1c84de60ae1ea618ae44df33?s=80&d=retro&r=g
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Hi Leif,

the weblinks for some (many?) airfields not responding to a tap is beeing investigated; consider it fixed soon (http:// prefix is missing; either the data collegues will add it or I will automatically prefix it in upcoming versions).

knowing you and your use cases a bit, I fear your ipad mini 4 (if I recall correctly you are using an ipad mini 4) is just a bit too limited for a smooth running of ev4, although there is definitely some room for improvement in ev4 coding also, what will of course be done too in the near future, but I have no idea how significantly improvements those coding changes will give unfortunately.

 

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leif
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 leif
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I have two iPads actually.  The iPad Pro 2016 has 2GB RAM I believe.  This is the one I normally use.  The other iPad is 2020 and it is faster.  But I have basically the same troubles, including the jump to the present position on every start.

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Stewart Buckingham
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Which countries do you have installed, Leif - I don't ever suffer these issues either on my 2019 Huawei (Android, of course) or on my iPhone 11 on IOS. There must be something different between our set-ups or how we use them?

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leif
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i have Germany, Denmark, Sweden and Norway.

That might be a lot, but I assume most data will just sleep in the Database and is not being used for any calculations.  

I also have ForeFlight on the same iPad.  With the same countries loaded PLUS all Jeppesen plates.  ForeFlight has never crashed and is loading much faster.  I find it a bit more complicated compared to EV.  But their engine is impressive.

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Stewart Buckingham
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Thanks, Leif. I have often had Britain, France, Belgium, Netherlands and Germany installed, which (I would have thought) would have had at least as many airfields and as much airspace data etc as your mix, though I suspect you have a bigger land area which I suspect requires much more geographical data which perhaps is larger than the the size of the aviation data files for a typical country. How does the level of geographical detail in ForeFlight compare with EV4?

Later this week I'll try installing your mix and see if it changes how EV4 handles for me.

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leif
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But is it really the amount of data?  Even with only one country loaded, the panning of the map a certain distance away from PPos will require a new loading of all details.

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5c1242ce1c84de60ae1ea618ae44df33?s=80&d=retro&r=g
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In essence only data visible using current viewport is loaded from files into memory. Although advanced indexing and caching techniques are used, a large number of countries has an effect simply because of the number of datafiles that need to be searched in for data. Also some datatypes (mostly notams and advanced weather) data amount increases significantly with number of countries loaded. And when smartmap is enabled, for all those notams need to be checked if they are effecting airspace activities somehow. So in general although recent apple and android high-end devices should have no problems at all with entire europe, it is advised to keep the number of loaded countries “balanced”

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Stewart Buckingham
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Leif, I promised you a while ago that I would try your list of countries on my iPhone - I have now installed ED, EK, ES & EN. I have also left EG installed. I have downloaded all EFB files for the 5 counties - 15,152 files in all. From launch, it takes 9 seconds for the "Loading map data, one moment please" to clear. I  never touch anything during that period. Waiting 9 seconds is not an inconvenience if you are used to it. Thereafter, irrespective of the zoom level, panning is virtually instantaneous as is the re-painting of the map. I can swap to other apps and back to EV without any interruption to  what EV is doing.

 

This is with EV version 4.0.981 on an iPhone 11 (released Sept 2019), now running IOS 15.5, with 88 apps installed and 11 of 64GB of storage free. I am at a loss to understand why your 2020 iPad Mini is not at least as capable as my phone, though I suppose your larger screen will require more pixels to be computed than my phone which is 1792 x 828 pixels.

 

Do you  have ForeFlight installed on both your iPads? Would you be willing to remove Foreflight from one of them and do some testing in that state - I wonder if Foreflight is holding a lot of cached data that leaves insufficient space for EV to operate in an optimum way? That is the only thing I can think of that might be a significant difference between your set-up and mine?

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leif
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I have foreflight installed, but the app is completely closed by swiping it away.  My feeling is that crashes occur mostly when I have a slow internet connection through data roaming on 3g or less.  I presume this because after the first couple of crashes EV works stable. 

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Stewart Buckingham
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With the significant volumes of data involved, EV would doubtless be slowed down with a poor or intermittent internet connection. By comparison all my normal testing is with a good, reliable wifi at home, though I have experienced some difficulties when using "throttled" wifi systems in some hotels. At the time I put those down to the wifi link from time to time locking itself out and not to any internal failure within EV being triggered by a poor wifi link, but I suppose it would require somehow monitoring the wifi performance to be able to take any meaningful view about that.
 
If EV crashes several times in succession on launch, a special protection kicks in, which effectively assumes some set-up files have become corrupted, so those files are deleted and new, "clean" copies created, taking a little time but sidestepping any possible consequences of the files being corrupt some how. It sounds like that "fall-back" process is what is then improving the behaviour you are seeing in EV after several launch crashes.
 
Before thinking further about any problems that might arise when EV only has a poor internet connection, I would like first to explore further how it operates for you when you are able to run it on a fast, robust 4G or wifi connection. Do the severe performance issues that you have reported here and which I have never experienced ever arise when you are on a very good internet link? If we can show that the problems are only found with a poor link then that would be a very big step towards understanding what is going on and why you are reporting problems which seem so much more severe than any other users are ever seeing?
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