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System memory vs RAM

Discussion in 'Legacy Windows' started by Wiry, 2003/01/28.

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  1. 2003/01/28
    Wiry Lifetime Subscription

    Wiry Inactive Thread Starter

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    Can someone explain the difference between system memory and RAM? Why doesn't adding RAM increase system memory and how does Virtual Memory affect system memory? I've always been confused about this.

    Also, on a defrag thread, when defrag wouldn't work, many people have said to delete the hidden windows file, Applog. Can someone tell me what happens when you delete it? How does that help defrag? I know Windows will create it again ... but what about it screws up defrag?

    Also, in Windows 2000, the system memory % doesn't show up in the place it used to show up in Win98. Is it gone completely in Win2000 ... or is it hiding somewhere else?

    Thanks ... I'm learning.
     
    Wiry,
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  2. 2003/01/29
    Steve R Jones

    Steve R Jones SuperGeek Staff

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    System memory - I believe your talking about "conventional memory:

    conventional memory

    On DOS systems, conventional memory refers to the portion of memory that is available to standard DOS programs. DOS systems have an address space of 1MB (megabyte), but the top 384K (called high memory) is reserved for system use. This leaves 640K of conventional memory. Everything above 1MB is either extended or expanded memory.


    Have never heard the delete applog trick?

    The only online dictionary and search engine you need for computer and Internet technology.

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    Steve R Jones,
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  4. 2003/01/29
    Christer

    Christer Geek Member Staff

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    I read about "delete APPLOG" on the Symantec helpsite.
    Norton SpeedDisk has its own algorithm which can get in conflict with APPLOG and if NSD runs slow, APPLOG could be deleted.

    Windows keeps track of program and file usage and stores that information in APPLOG. According to this information, during defrag, programs, files and folders are relocated to the optimum position on the harddisk. Frequent usage and changes put the stuff at the front of the disk and less puts it at the rear of the disk.
    The more information that is contained in APPLOG, the longer it takes for defrag to calculate optimum positions. If APPLOG is deleted, defrag has no information and only makes files contiguous and puts them one after another to consolidate free diskspace.
    Then APPLOG is again beginning to fill up with information.

    I have deleted APPLOG on one occasion and NSD goes quicker, especially the first part when nothing seems to happen when the algorithm calculates optimum positions.

    You should take note of that I don´t use the inherent Windows defrag tool but Norton SpeedDisk.



    HTH,
    Christer
     
    Christer,
    #3
  5. 2003/01/29
    Arie

    Arie Administrator Administrator Staff

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    Arie,
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