I have to step in and point out that Virtual Memory is exactly that,
Virtual Ram. There is no magic about it. So you absolutely can calculate
your memory budget when the O/S and all apps are loaded, configure your
system to have that much RAM (plus a bit!), then disable the pagefile
completely.

Creating a ram disk to host a pagefile is not a good idea, since the
system will incur unnecessary VM activity resolving page faults, and
slow 'disk-IO' operations to the ramdisk. If you just give the
Ramdisk-ram directly to the O/S, performance will be better.

Of course embedded-XP is best, and a demo is freely downloadable.


-----Original Message-----
From: pic microcontroller discussion list
[mailto:PICLIST@MITVMA.MIT.EDU] On Behalf Of Paul Hutchinson
Sent: 13 April 2004 16:00
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: ] XP virtual memory setting to zero ???

As you've discovered, totally disabling VM for Windows above v3.x is not
recommended by MS and may not be possible in some versions.

You could use one of the many embedded flavors of Windows.

Another option is to put in extra RAM, create a RAMDISK and use that for
the
VM drive.

Paul

>-----Original Message-----
>From: pic microcontroller discussion list
>[mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of SM Ling
>Sent: Tuesday, April 13, 2004 4:03 AM
>To: PICLIST@MITVMA.MIT.EDU
>Subject: [OT:] XP virtual memory setting to zero ???
>
>
>Trying to put together a flash based XP system.  So I am doing
>some testings
>on a harddisk system first before commiting cash on the flash.
>
>The advanced setting allow the virtual memory to set to zero when
>I disabled
>the drive for virtual memory purpose.  But there is minimum allowed for
>virtual memory at 2MB.  The system still work fine, this is a 256MB RAM
>system.
>
>I am not sure is the test useful, or the system required 2MB for
virtual
>memory is forced even if the setting seems to set to zero.
>
>Any clue?
>
>Thanks.
>
>SM Ling
>
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