On Tue, 6 Dec 2011 20:00:42 +0100
Durk Talsma <durk.tal...@ugent.be> wrote:

> Hi All,
> 
> Using the following command line options, I am seeing a dramatic increase in 
> memory consumption, in just a few seconds, up to the point where flightgear 
> becomes unusable (top reporting that flightgear uses more than 85% of memory 
> on a 4 GiG linux box):
> 
> fgfs --timeofday=dawn --airport=SAVE --aircraft=dc-3
> 
> Running a comparable session using the fokker50 instead of the dc-3 shows a 
> stable memory footprint of about 25% (as reported by the linux "top" command).
> 
> While running the dc-3 I see many warnings printed that stereo sound files 
> are not supported, and after disabling the master sound channel (GUI: 
> File->Sound->uncheck master sound), the memory footprint becomes stable 
> again. Given that I don't see this behavior using the fokker50, makes me 
> suspect it's something specific to the dc-3, and probably related to the 
> erroneous stereo file. Is this possible?

I noticed a git commit to simgear recently that also meantioned this behaviour 
(and claimed to be a fix for it). Best practice is off cource to convert stereo 
wave files to mono. This will also make them useable in 3d space (otherwise 
they just get rendered as stereo files, without positional information). I'll 
investigate tomorrow.

Erik

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