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SimConnect Limitations - (Memory?)

P

PeetyGreen

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I'm sending aircraft updates from my ext. program at a rate of 4x per sec. The aircraft in FSX fly fine but only for approx. 25 min. Then all of my aircraft disappear, and the program resets. This time varies based on the number of aircraft I'm updating (i.e. ran approx. 40 mins when updating single aircraft).

Does anyone know of any limitations on the number of updates you can send FSX? Or if I have to clear memory or call some other function between updates? I'm using C++.

Thanks
 
SimConnect Limitations - (Memory Fix)

After looking through my code and reading a hand full of C++ memory leak tech docs (always fun). I was able to resolve this issue by changing my graphics/display settings to low..

Aircraft flying and receiving updates for over an hour!
 
I have a program that I wrote at work that rewrites the aircraft location and attitude at 50 times a second that runs indefinitely. I would humbly suggest that there's a problem with your code.

Si
 
Thanks Si,

What are your graphics settings on, High?

I monitored the memory usage with the graphics settings both ways (high, low) using the same code base. When graphics were set to high usage increased until it eventually reached 100%. When set to low/med it only got up to 70% cpu usage.

I tested this @ 30hz as well..

Thoughts?

Thanks...
 
Last edited:
I run it on a Core2Quad Extreme with the graphics pretty much max'd out.

I only update the user aircraft though. Perhaps your specific issues are related to the number of aircraft you are updating. I guess if you're creating hundreds of AI SimObject instances then the system could run out of memory, depending on what FSX does memory-wise to handle each one.

Si
 
Simon853 said:
I run it on a Core2Quad Extreme with the graphics pretty much max'd out.

I only update the user aircraft though. Perhaps your specific issues are related to the number of aircraft you are updating. I guess if you're creating hundreds of AI SimObject instances then the system could run out of memory, depending on what FSX does memory-wise to handle each one.

Si
Click to expand...

With Graphics Maxed out, there is very little more one can do without hitting an OOM error. You need MORE virtual memory, and one way to easily do this is to us the 3GB switch.

Just increasing the virtual memory that FSX has from the default limit of 2GB, to 2.5GB, will allow FSX to support a lot more addons ( and your numerous AI aircraft ??).

FYI: I used to get OOM errors quite early into flights, when running addons like complex addon aircraft.
Since implimenting the 3GB switch, (using 2.5 GB,) I have NEVER had an OOM.

Geoff_D
 
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