Donn Washburn wrote:
> Laurence Vanek wrote:
>> Laurence Vanek wrote:
>>> Laurence Vanek wrote:
>>>> I am running FG cvs on a Fedora Core system. I have 2 GiB of RAM & a
>>>> core 2 duo (E6600)cpu. The graphics card is a GeForce 7600 GS with 256
>>>> megs of VRAM.
>>>>
>>>> After a one hour flight over the plains of Iowa, USA I checked FG memory
>>>> usage & find it is retaining 1.5 GiB. Astounding!
>>>>
>>>> I am running some features that may be memory intensive:
>>>>
>>>> --geometry=1024x768
>>>> --enable-distance-attenuation
>>>> --shading-smooth
>>>> --enable-skyblend
>>>> --fog-nicest
>>>> --enable-enhanced-lighting
>>>>
>>>> I was not running any other application in the background.
>>>>
>>>> I would seem this is a fairly serious issue. Has anyone else noticed this?
>>>>
>>>> I dont begin to pretend I understand all the elements that comprise the
>>>> simulator but it would appear something is leaking or not releasing memory.
>>>>
>>>>
>>> Continuing discussion with myself.
>>>
>>> Just complete 1-1/2 hour continuation of the above trip from KSPW to
>>> KRST (Spencer IA to Rochester MN). Memory footprint at end of trip was
>>> 523 MiB this time. Only difference was that first flight above (from
>>> KSUX to KSPW) was at 3500 ft MSL, this last flight at 5500 ft MSL.
>>>
>>> Same features, same plane, same weather conditions, essentially same
>>> terrain.
>>>
>>> Dont understand the big RAM usage difference.
>>>
>> Today I flew from KLSE (La Crosse, WI) to KMSN (Madison, WI). Flight
>> was at 3500 ft MSL with features enabled as in my original post.
>>
>> After arriving in KMSN & checking FG memory I found 1.7 GiB. I have 2
>> GiB installed.
>>
>> Shocked, I decided to repeat exact same flight again but this time
>> remove --enable-skyblend from my .fgfsrc file (wild guess).
>>
>> Same arrival & departure runways, same route (VOR radials), same
>> altitude (3500 ft MSL). Memory footprint was only 639 MiB this time.
>> Weather conditions were the same.
>>
>> Not sure what sky-blend is supposed to do but I do not notice a visual
>> difference with it removed from my .fgfsrc file.
> I have one of the recent FlightGear CVS versions running and when I
> start up xosview (a old gui based system info app.)"and watch the CPU I
> see 100% USR+SHAR on CPU0. This machine is a Athlon-xp +2800 with 1.5G
> memory with NVidia factory .run Memory usage at startup is around 2/3
> (1 gig. The real problem is that it is not real time - it is jumpy,
> even the prop run so slow you can count its revolutions plus it runs
> forward and backwards
>
32-bit XP2800+/1 Gig, with lots of stuff running, including lots of
firefox tabs, thunderbird, freespire in Virtualbox running konqueror,
konsole and evolution, video is GeForce FX5500.
# free -m
total used free shared buffers cached
Mem: 883 875 8 0 60 93
-/+ buffers/cache: 720 162
Swap: 5506 547 4959
After running fgfs c172
# free -m
total used free shared buffers cached
Mem: 883 631 252 0 36 61
-/+ buffers/cache: 533 350
Swap: 5506 827 4679
top
=====
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
15190 root 15 0 239m 57m 7468 S 24.6 6.5 56:40.33 VirtualBox
fgfs runs smoothly, no video or ATC audio skips, c172 runs normal. Check
with "top" to see what else is eating up CPU and MEM. I didn't check top
while fgfs was running, but everything was responsive.
Regards
Sid.
--
Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
Specialist, Cricket Coach
Microsoft Windows Free Zone - Linux used for all Computing Tasks
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