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GamerNurd

Skymaxx pro v3 high memory usage

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Just purchased skymaxx pro v3 and was going to make a flight from Dublin to Arlanda, and when i was getting over England my fps get low, the fps is 0.8 - 1 fps. The RAM usage is very high, taskmanager shows 95%. Didn't have the problem when i was using v2. Someone with similar issues or have an answer to my problem.

 

Thanks in advance

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What scenery are you using in England? If you're using GB-Pro then it will require quite a lot of RAM. I have had similar problems in the past which have been resolved by forcing a scenery reload (and not caused by Skymaxx Pro).

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Have you tried turning your skymaxx settings down? They render more clouds at the same settings than V2 so even if you have the same settings, you computer is rendering more clouds.

 

Also as Tony said, if you are using photo scenery, mesh or extended DSF, these will exacerbate the problem also.

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Iam using HD mesh scenery v3 and w2xp_europe and osm_europe. The funny thing is that when I was flying from Arlanda to Dublin I didn't have this issue, and I was flying over England as well.

These are my settings btw

a330_1.png

 

a330_2.png

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I think it's clear from your screenshot that at 295MB available while only on the ground it won't take much to push your GPU over the edge.

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But how can I make room for more RAM? Is it a memory leak somewhere? I haven't change much in setting, just lowered number of objects and number of roads and installed skymaxx pro v3.

My system specs if it helps

I7-2600K OC to 4.4

GTX 770 4GB

Hyper Beast 16GB RAM

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But how can I make room for more RAM?

Hyper Beast 16GB RAM

Cameron was talking about VRAM. What is your monitor resolution, or you could reduce world distance a bit. Do you only have 2 GB VRAM in your 770?

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Iam using HD mesh scenery v3 and w2xp_europe and osm_europe.

 

On a 2GB video card? Well, there's your problem. Heck, even 16GB of system RAM is barely enough with all of that hi-res scenery.

 

It's not a memory leak (I spent the whole morning confirming Skymaxx Pro does not leak memory). I promise you it's the scenery that's consuming the vast majority of your memory, not SkyMaxx Pro. You're going to have to make some compromises on what you have installed - even a 64-bit flight sim with 16GB of system memory has its limits.

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Just purchased skymaxx pro v3 and was going to make a flight from Dublin to Arlanda, and when i was getting over England my fps get low, the fps is 0.8 - 1 fps. The RAM usage is very high, taskmanager shows 95%. Didn't have the problem when i was using v2. Someone with similar issues or have an answer to my problem.

 

Thanks in advance

You need to reboot your computer...and that will usually sort it all out.

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Cameron was talking about VRAM. What is your monitor resolution, or you could reduce world distance a bit. Do you only have 2 GB VRAM in your 770?

I have 4GB of VRAM.

My monitor resolution is 1980x1080 and it has worked fine until now.

I did reboot my computer and the problem is still there.

I will try to reduce my world detail distance one notch and try again.

Once again I haven't changed anything other than lowered number of objects and number of roads.

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I have 4GB of VRAM.

My monitor resolution is 1980x1080 and it has worked fine until now.

I did reboot my computer and the problem is still there.

I will try to reduce my world detail distance one notch and try again.

Once again I haven't changed anything other than lowered number of objects and number of roads.

 

try lowering the amount of aa and as. i heard just lowering it down by one notch can give increased performance while maintaining pretty good graphics.

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i have the exact card, don't go above 2xx for AA..... That's your problem.... This is why I am getting a 980ti! ha as I keep telling myself ;-)

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try lowering the amount of aa and as. i heard just lowering it down by one notch can give increased performance while maintaining pretty good graphics.

Will try that. But how can I just have approx 300mb free vram left when Iam sitting on the ground and I was able to make a flight to Dublin. It was a flight that was around 2.5 hours and now I cannot make it 20-30 minutes =/

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I have 4GB of VRAM.

My monitor resolution is 1980x1080 and it has worked fine until now.

 

Hmm, Interesting. Your settings are in fact lower than mine, but why does SkyMaxx Pro V3 report only less than 300 MB available. Your report clearly indicates swapping.

But you shouldn't really have osm europe and w2xp europe active at ther same time. I would always deactivate one of them to simplify the handling. Since they are both based on the same data, it doesn't give you any advantages, but x-plane can't know this, so it prepares both. Simply go into your scenery_packs.ini file and set the osm europe to SCENERY_PACK_DISABLED...

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Longranger, I will try that when I have the time. I think it is so strange that it shows that my vram is less than 300mb when I just started the sim

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Well, this is not so unusual. The OpenGL driver tries to fill the VRAM as good as possible. Perhaps i9t hits all needed graphics.

That's a totally usual behaviour for a cache algorithm. An empty cache doesn't make sense and the w12xp models gives more than enough material. But normally ti can determine within a few seconds which segments are really needed and which can be exancheged with needed materials.

 

Hmm, thias gives me an idea...

Yep. I guessed it. This cache strategy makes the VRAM and RAM reports of SkyMaxx Pro more or less worthless. On my computer it reports 133 MB VRAM, but this doesn't say anything since SkyMaxx Pro doesn't know if any objects in the cache can simply be replaced, since they are not needed at this moment.

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You also might want to reduce water reflections to low...  Not much difference in what it looks like but a big difference in framerates.....  Even if you are not over water.

 

John

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This cache strategy makes the VRAM and RAM reports of SkyMaxx Pro more or less worthless. 

 

Only if you assume that this cache is the only thing demanding memory at runtime, which it isn't. If caches are consuming all available memory, then any new memory allocation request that comes in still has to swap something out to disk (or slower memory).

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Only if you assume that this cache is the only thing demanding memory at runtime, which it isn't. If caches are consuming all available memory, then any new memory allocation request that comes in still has to swap something out to disk (or slower memory).

No! SInce the complete cache is only a copy of objects in the RAM and/or on file, it can simply overwrite the oldest, or never used cache blocks with the new objects and textures without any worries.. You only get swapping problems if it has to delete content from the cache and reload it right in the next instant.

The advantage of the very fast access speed simply dictates, that you don't want to reload any content from the CPU, HDD/SD or RAM if you can avoid it. So it tries to prefetch as much information as possible.

 

In fact this behaviour is nothing new. At least on my GTX 770 I observed it from the beginning with the help of GPU-Z. If the drivers find any content to fill the cache, it will use it. Ahnd with world2Xplane or GB or Denmark Pro there are always enough possible objects, thanks to the models library.

 

It always runs with a nearly full VRAM but doesn't get into trouble even if it has to load a big airport. It simply overwrites data that wasn't used for some time. So the available size of the free VRAM doesn't tell you anything about the amount of VRAM that the GPU really needs at this time..

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Maybe we're talking about different caches. What I'm saying is that there are plenty of things outside of X-Plane's internal cache for scenery that also need memory resources.

 

But whatever. I doubt people want to read us bickering over technical minutia.

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It would be a technical minutia if SkyMaxx V3 wouldn't try to present the amount of free VRAM as a kind of reserve indicator. In fact I tried several different settings of SkyMaxx Pro V3 without significant changes of these values And I just found out that the 980 driver behaves the same. So I can only say SkyMaxx Pro V3 shouldn't show these values to normal users!

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Well, I disagree. If I have cumulus clouds in the scene and turn up the cloud draw distance all the way up, and hit apply, I can clearly see VRAM getting consumed. Our clouds exist outside of X-Plane's internal caches, and if there isn't enough free VRAM on the card, that will pose a performance problem.

 

I do agree that how video cards manage memory is very complicated though, and there's more to the story than a single number. But I would still maintain that if the number we're showing gets too close to zero, you have a real problem.

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