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-   -   How to change VM value down? (http://forums.macnn.com/64/classic-macs-and-mac-os/47297/how-to-change-vm-value-down/)

 
jeronimo Dec 28, 2000 12:57 AM
How to change VM value down?
I have a G4 400, 9.0.4 and 448 RAM. After reading a topic I'm turning my VM on just to see what happens... but I want to leave it with 1 MB only, but I'm not beeing able to change the value under 449?! Why?
http://forums.macnn.com/cgi-bin/confused.gif

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Think Diferente!
 
Cipher13 Dec 28, 2000 01:57 AM
That value is your total RAM.
449 total - 448 physical = 1 virtual http://forums.macnn.com/cgi-bin/smile.gif
It simply shows the TOTAL RAM you will have on reboot rather than how much is actual VM.

Cipher13
 
noliv Dec 28, 2000 02:51 AM
No, Cipher, 449 is the amount of space that is used on the disk, and indeed it's the total of available ram:

To work properly, the VM is equal to 'your ram' + 'what you want'

On *nix, you must often make a partition for the VM, it is suggested to choose a size = 2 x 'your ram' (or 1.5 * 'your ram', I don't remember)


Well, if you have 448 MB of RAM, you should turn Virtual Memory OFF instead of setting it to 1 Mo

http://eigip.free.fr/nol.gif

[This message has been edited by noliv (edited 12-28-2000).]
 
jeronimo Dec 28, 2000 03:45 AM
Hey guyz? Who's right here? http://forums.macnn.com/cgi-bin/wink.gif

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Think Diferente!
 
noliv Dec 28, 2000 03:52 AM
actually, cipher is right too, but the space that is occupied by the VM invisible file is not 1 MB but 449...

http://eigip.free.fr/nol.gif
 
slboett Dec 28, 2000 02:23 PM
No, they're not both right. 448MB RAM +1 is the amount of VM used on the hard drive. Physical RAM +1MB is the lowest setting available in the Mac OS.

Scott
 
Cipher13 Dec 28, 2000 07:16 PM
Fine, I'll rephrase:

That value is your total RAM.
449 total - 448 physical = 1 virtual http://forums.macnn.com/cgi-bin/smile.gif
It simply shows the TOTAL RAM you will have on reboot rather than how much is actual VM.
Now the 449 ALSO shows how much disk space will be reserved by the Virtual Memory Storage file.

Cipher13

[This message has been edited by Cipher13 (edited 12-28-2000).]
 
jeronimo Dec 29, 2000 02:39 AM
Hey guys... thank you so much for your help , BUT, I guess I'm going to leave the VM OFF for a while...
 
Cipher13 Dec 29, 2000 02:59 AM
Your loss (er... gain in HD space http://forums.macnn.com/cgi-bin/wink.gif)

Cipher13
 
noliv Dec 29, 2000 03:35 AM
Quote
Originally posted by slboett:
No, they're not both right. 448MB RAM +1 is the amount of VM used on the hard drive. Physical RAM +1MB is the lowest setting available in the Mac OS.
It's funny, we all agree each other...
I don't know if what I wrote is correct, but what I wanted to write was correct (maybe a translation mistake... I'm tired to talk in english...)

http://eigip.free.fr/nol.gif
 
Cipher13 Dec 29, 2000 05:36 AM
We're both right, we just each left out a detail http://forums.macnn.com/cgi-bin/wink.gif

Cipher13
 
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