About vrtual memory

[stefano]

Hi
I am a little confused here about virtual memory and his setting.
I have a eystem with 1 G of ram, and a P4 3Ghz with an ATI x1600xt 256 Mg.
Well following an advice coming from another site about FSX, i set the virtual memory at 4092 on the same HDD i have the OS and FSX ( i don't have another drive)
When i started the game, the performance was going down a lot( i was using the game with the same setting i had before changing the virtual ram) if before i could get 18/20 fps, after, the fps were down almost of 5/8 fps...
Than i came back to the classic set of 1,5 time the phisical memory, and all was coming back to normal.
My question is, what is the right way to set VM?
1) setting 1,5 time the RAM?
2)let Windows set the VM?
3) no VM ( but i am afraid that in this case if i run FSX, i could have some msg of low memory..)
4) Try various values of VM until the right is popping up?
Sorry for this silly question, but i think that one of the way to make FSX run fine, specially in a medium low system like mine, is also how to set this VM...

Thanks
Stefano

[Keep It Simple]

It has been my experience  that while win 9x could benefit from various VM settings, XP likes to contol it.
So, after much experimenting,  I just let XP set it.

Of course, somone else might have a different opinion.  ;)

[justpassingthrough]

NickN posted the correct setting in this thread...

http://www.simviation.com/cgi-bin/yabb2 ... 53;start=0

Its based on the amount of memory you have installed.

For under 2 gigs: SYSTEM MANAGED
For 2 gigs and over: 3070-3070 on the Windows boot partition only

[stefano]

Hi
I will try also this, maybe let Win manage the VM, could give the best performance needed in that special moment.....
I am afraid also some problem in performance depend also from the Vcard, not much for the quality but for the brand, ATI or Nvidia...
Could be?

[kilotango]

My experince is, if you don't have a slave, set the min and max VM to 1024.

[justpassingthrough]

VM has absolutely nothing to do with the video card. Its based on your use of the system and will have no impact on frame rates, only how the system pages to disk when RAM memory runs out.

You can set VM to 10 gigs and it wont do anything but take up space. When a system switches from RAM to VM, it runs like a dog with worms so the best setting is one that does not fragment the page file it in case it is needed.

SYSTEM MANAGED for les than 2 gigs and 3070-3070 for 2 gigs and above. If you have 2 gigs the odds of your system even touching VM are slim. With less than 2 gigs system managed keeps the file from fragmenting automatically.