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Upgraded PC, more VAS OoM CTDs...

Gridley

Gridley

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us-massachusetts
Hi all,
Long time since I've posted here, but I know the experts read posts here, and my discussion is probably quite technical.

I recently got back into simming, first because I inherited a slightly older (but capable) PC, then I had the opportunity to move to a pretty much top-line PC in the last month or two.

Here's the two setups:

BOX A (2010):
I7-950 overclocked to 4.1ghz, GTX 970 w/4gb, 8 gb DDR3 ram

BOX B (2017):
I7-7700k overclocked to 4.7ghz, GTX 1080 w/8gb, 32 gb DDR4 ram

In terms of benchmarks, the newer machine (B) is a magnitude ahead of the older.

Both are running win10x64 pro, and I've installed FSXse with identical addons that include OrbX global, vector, LC, and some airports and regions, Active Sky 2016 and REX texture direct,default and addon (A2A, Carenado, others). Descriptions below are all with Cessna 172/182, no heavy metal which bring some additional burden...

I've also tweaked both similarly with FSX.cfg settings (buffer pools on the GPU, lod at 5.5 or less, highmem fix usually on, though I've tried off, tested various affinity masks, that's it) and I'm running DX10 with steve's fixer.

What I've observed:

1. Outside of major hubs (NYC, LA, etc.) performance is excellent on both machines, but noticeably better on the newer (box b) - probably averaging 30-50+ FPS on new machine, 20-30+ FPS on older (box a). In same areas, textures are sharper on new machine than old, even though settings are the same. I also have the sense that more 3D objects load on new machine even though both scenery and autogen density settings are the same.

2. In dense urban areas and major hubs performance is better on newer machine (box b) with many autogen buildings loading than on older (box a). FPS on newer machine averages around 20, older 15 but can drop to single digits. However CTDs due to memory errors are now much more prevalent on the new machine and RARE (in fact, almost absent) on the old machine. My sense is that the new machine is able to process more 3D scenery and rapidly consumes VAS, whereas the older box is able to throttle itself better and conserves VAS.

My question for the experts -
* Anyone else experience this?
* Any merit behind my hypothesis?
* Anything to do about it?

On the same machines, XP11 runs really smooth. I think predictably better on the new machine vs. older. If the ground handling, weather and AI/ATC improve, along with some a few higher fidelity aircraft, XP will really be a competitor.
 
No offence, old chap, but you're more likely to get such answers at AVSim. This isn't really a gear tweaking forum, it takes up too much time building add-ons as it is.
 
No offense taken. This isn't so much intended to be a tweaking discussion as a VAS utilization question related to differences in hardware performance. That said, I have had enough useless conversations on AVSIM that I'll find somewhere else. ATB!
 
VAS, IMO, is just an excuse for "I have some much crap in my sim I can't find an excuse for constant crashes so it must be VAS".

Just a developer inside joke ;) :)
 
pinkjr said:
VAS, IMO, is just an excuse for "I have some much crap in my sim I can't find an excuse for constant crashes so it must be VAS".

Just a developer inside joke ;) :)
Click to expand...

To throw the ball right back: "I don't keep memory consumption in mind when developing". And the bad thing is that almost all aircraft designers (me included) are guilty of this when mapping animated parts to 2048 (or worse) pixel bitmaps.
It even goes so far that I'm flying current payware aircraft with DXT1 compressed textures that were resized down to 1024 pixel just to lessen the chance for OOMs.



Gridley said:
My question for the experts -
* Anyone else experience this?
* Any merit behind my hypothesis?
* Anything to do about it?
Click to expand...

You don't need the highmemfix tweak for SE as it's already included.

Rematch the FSX settings and add-on configuration on both boxes, then retest in identical scenarios while monitoring remaining VAS with FSUIPC*. Hardware shouldn't make a difference.



*https://flightsimeindhoven.wordpress.com/2015/01/15/how-to-measure-vas-with-fsuipc/
 
Ahhh P3D V4.0 64 bit can't come soon enough! I want to be the first developer to model a fast food court inside a major terminal, with working kitchens , microwave ovens with spinning plates, people cooking......all using 8192 textures. I want to see sesame seeds on those burger buns!
 
pinkjr said:
Ahhh P3D V4.0 64 bit can't come soon enough! I want to be the first developer to model a fast food court inside a major terminal, with working kitchens , microwave ovens with spinning plates, people cooking......all using 8192 textures. I want to see sesame seeds on those burger buns!
Click to expand...
Someone could sell a USB device that nourishes the player intravenously when he directs his avatar to consume the burger. It could be very immersive. Probably don't want to enable crashes.
 
I find that running FSX with ORBX, I crash after 20 minutes. I run it in P3D V2, I fly and fly and no crashes happen.

FSX is 11 years old, right? P3D is updated, brand new, etc, etc.
 
For one thing, lock fps at 30. No reason to ever have more.

Secondly. In years of flying and developing, with most sliders maxed, ORBX, REX, add-on birds, and I've never had an OOM or VAS crash with either platform. And my system is a shade older than your old system.

So probably time to cut-back on trying to push things so hard.

Which add-on aircraft are you flying? Some poorly developed (IMHO) aircraft will hog over 50% of your usable VAS the second they are loaded. With add-ons like that flying into any big city, you're just asking for trouble.

- Joseph
 
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