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re: Question about 'Stop Windows from Wildly Accessing your Hard Disk'
Sunday, December 14, 2003 at 7:47 am
Windows 98 Annoyances Discussion Forum
Posted by Charlie
(5 messages posted)
Curious...
My vcache is blank in my Systen.ini file and I have a Toshiba Laptop with 512 MB
running Win98SE.
Could this be the reason my machine seldom has more than 70% resources available
and often leaks down to 40 to 50 %...
Thanks, Charlie
On Wednesday, June 19, 2002 at 4:25 pm, FatalException wrote:
>EXCEPTION No. 1: For systems with more than 128 MB of RAM, setting a VCache maximum
>of about 70% of your total RAM is recommended as prophylaxis against run-away VCache
>growth in rare, specialized situations. (A tip of the hat to MS-MVPs Ron Martell,
>Ovidiu Popa, and Alex Nichol for months of experimentation and documentation of
these
>details and recommendations.)
>
>EXCEPTION No. 2: VCache increasing above 512 MB can create serious memory handling
>problems. If you have more than 512 MB of RAM, a VCache maximum of 524,288 KB (or
>a little less) is recommended. This is obtained by adding a MaxFileCache=x entry
>in the [vcache] section of SYSTEM.INI, where x is the maximum value you wish to
set.
>VCache is limited internally to a maximum cache size of 800 MB. The problem is that,
>on computers with large amounts of RAM, the maximum VCache size can be large enough
>that it consumes all of the available addresses in the system arena, leaving no
virtual
>memory addresses available for other functions such as opening an MS-DOS prompt.
>This problem may occur more easily if you have an AGP video adapter: The AGP aperture
>is also mapped to addresses in the system arena, and if VCache is using its entire
>800 MB allowance and an AGP video adapter has a 128 MB aperture mapped, there will
>be very little address space remaining for other system code and data that must
occupy
>the available range of virtual addresses.
>
>EXCEPTION No. 3: For systems with more than 1 GB of RAM, the defaults in Windows
>98 or ME can cause continuous rebooting of the computer, or to hangs or serial reboots
>during the Windows upgrade process. To resolve this problem, add a MaxPhysPage=40000
>entry in the [386enh] section of SYSTEM.INI. This effectively limits the amount
of
>RAM Windows can access to 1 GB. (Microsoft limits ths recommendation to systems
having
>more than 1.5 GB of RAM, but the solution is to roll it back to 1 GB. See MSKB Q304943.)
>Microsoft has now flatly stated that, “Windows Me and Windows 98 are not designed
>to handle more than 1 GB or RAM. More than 1 GB can lead to potential system instability.”
>
>
>
>
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 | |  | re: Question about 'Stop Windows from Wildly Accessing your Hard Disk' (Charlie: Sun, Dec 14, 2003, 7:47 am) |
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