Excessive VAS usage in P3D V3.4 triggered by OPTIMIZE_PARTS

[Nuno Pinto 1,394]

I'll try to run the test tomorrow and have some numbers to add.

[Guest]

Thanks again everyone for all the input.

 

Cheers, Rob.

[WebMaximus 372]

Here my findings at stand 5 at ESSA in the NGX following the steps outlined in post #18.

 

1405952 with OP set to 1 (FPS 55)

1426304 with OP set to 0 (FPS 47)

 

As you can see an improvement looking at VAS but not by much where the FPS instead dropped by a more significant amount of 8 FPS.

 

One thing I was thinking. Could the change in VAS behavior looking at 3.3 vs 3.4 has anything to do with the technique P3D used to release VAS memory during a flight?

 

Reason I came to think of this is I don't really see that much of a difference in VAS when just checking a specific situation like this one standing at a gate after starting P3D. The difference I've seen seems to be more after doing some flying where P3D both loaded the scenery at my origin as well as loading different scenery and weather along the flight and then finally loading the scenery at my destination.

 

Would have been interesting to do this same comparison between 3.3 and 3.4 after doing a full flight in the same conditions.

Edited October 4, 2016 by WebMaximus

[Navigator43 25]

Hope that there's a hotfix coming out for this problem.

[odourboy 1,288]

What problem? So far we seem to see a trade for a relatively small amount of VAS for a significant performance improvement. That doesn't strike me as unreasonable.

[virtualstuff 754]

Optimize part=0 : Flytampa EKCH VAS= 1541804 FPS= 47 Aircraft PMDG 737-700
Optimize part=1 : Flytampa EKCH VAS= 1529040 FPS= 57 Aircraft PMDG 737-700

[WebMaximus 372]

Optimize part=0 : Flytampa EKCH VAS= 1541804 FPS= 47 Aircraft PMDG 737-700

Optimize part=1 : Flytampa EKCH VAS= 1529040 FPS= 57 Aircraft PMDG 737-700

 

Very similar to my findings both looking at VAS and FPS.

[TheFlightSimGuy 514]

The tradeoff between FPS and VAS for me is leaning towards leaving OP=1 on. The sim takes a big performance hit without it. FSUIPC will at least allow me to pick up where I left off in case of an OOM. 

[David Roch 1,980]

Ditto ;-)

[Farlis 2,280]

This entire discussion shows that no matter what they say, in the end it comes down to the simple fact, that with current add-ons on the market and used in combination with each other, the only definite solution is to develop a 64-bit Platform.

As much as P3D has improved with releasing VAS, something FSX never did, it is still vulnerable to the memory overload.

 

I really look forward to a time, when VAS discussions will no longer happen.

[RTK1972 288]

This entire discussion shows that no matter what they say, in the end it comes down to the simple fact, that with current add-ons on the market and used in combination with each other, the only definite solution is to develop a 64-bit Platform.

As much as P3D has improved with releasing VAS, something FSX never did, it is still vulnerable to the memory overload.

 

I really look forward to a time, when VAS discussions will no longer happen.

I am with you Karsten (btw. cool Name ) But i promise you the next discussion flood after having 64bit platform with "what scenery is 64bit compatible and what tweaking can be done to make it compatible"

 

Not sure if that will be less painful discussion.

 

Cheers, Carsten

[grandfred29 180]

i ve just started a flight between nantes LFRS and athenes LGAV with pmdg 737, with a was @ 1250mb, now and after 20minutes of flight vas is @951 mb

 

optimize part =0, shader are rebuild

[RTK1972 288]

i ve just started a flight between nantes LFRS and athenes LGAV with pmdg 737, with a was @ 1250mb, now and after 20minutes of flight vas is @951 mb

optimize part =0, shader are rebuild

And what was vas usage with optimize parts=1 at that stage of the flight ?

[grandfred29 180]

since version 3.4 is out, the max time spend to fly is 1H45, and when i land vas show 700mb with OP=1

 

i am actually above the sea to athenes 2H15 flight, and vas is 989mb always with OP=0

[theskyisthelimit 48]

Does anyone happen to have a good saved flight plan they can link for download (something with gps autopilot path laid out for testing this) / and/or recommended aircraft to test?  That way each test can be exactly the same for the most part?

 

I assume most are using fsuipc with 024C and Type =32 sent to title window or console window perhaps (or log file)?