Re: Virtual Memory Size?

Thanks. I have read that article more than once, and highly recommend it to
anyone. I really miss Alex's presence around here.

"Jack E Martinelli" wrote:

> Virtual Memory in Windows XP
> Version 1.5 — Last Updated February 13, 2005
> by Alex Nichol
> (MS-MVP - Windows Storage Management/File Systems)
> © 2002-2005 by Author, All Rights Reserved
> http://www.aumha.org/win5/a/xpvm.htm
>
> What is Virtual Memory?
> A program instruction on an Intel 386 or later CPU can address up to 4GB of
> memory, using its full 32 bits. This is normally far more than the RAM of
> the machine. (The 32nd exponent of 2 is exactly 4,294,967,296, or 4 GB. 32
> binary digits allow the representation of 4,294,967,296 numbers — counting
> 0.) So the hardware provides for programs to operate in terms of as much as
> they wish of this full 4GB space as Virtual Memory, those parts of the
> program and data which are currently active being loaded into Physical
> Random Access Memory (RAM). The processor itself then translates (‘maps’)
> the virtual addresses from an instruction into the correct physical
> equivalents, doing this on the fly as the instruction is executed. The
> processor manages the mapping in terms of pages of 4 Kilobytes each - a size
> that has implications for managing virtual memory by the system.
>
>
> --
> Jack E. Martinelli 2002-05 MS MVP for Shell/User / DTS
> Help us help you: http://www.dts-L.org/goodpost.htm
> In Memorium: Alex Nichol
> http://www.microsoft.com/windowsxp/expertzone/meetexperts/nichol.mspx
> Your cooperation is very appreciated.
> ------
> "Ken Gardner" <KenGardner@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
> news:28B0160A-1147-4512-80F5-1FBB037ED28D@xxxxxxxxxxxxxxxx
> > "Mike Hall (MS-MVP)" wrote:
> >
> > > It is a good idea to let Windows manage the pagefile.. it seems happier
> > > working out what space is required by itself rather than having a user
> > > setting determine what it can do, regardless of the size specified by
> the
> > > user..
> >
> > I'm not disagreeing (that's how my page file is set), and I would add that
> > people make mistakes when they do try to customize their settings, but can
> > you point me to a Microsoft KB article or white paper that explains why it
> is
> > better to let Windows do it than to customize it? TIA.
>
>
>
.

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