Microsoft KB Archive/76686

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BUG: Protected-Mode GlobalCompact Return Not Free Memory

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Q76686

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The information in this article applies to:


 * Microsoft Windows Software Development Kit (SDK)

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SYMPTOMS
When Windows is running in one of its protected modes, the value returned by the GlobalCompact API does not accurately reflect the amount of free memory available in the system.

In enhanced mode, Windows can swap memory objects to disk. This process takes a long time relative to accessing an object in memory. Therefore, GlobalCompact returns the amount of memory available without performing any paging.

In standard mode, GlobalCompact never reports more than 1 megabyte (MB) of memory free because of a memory allocation limit on the 80286 chip.

STATUS
Microsoft has confirmed that this problem occurs in Windows versions 3.0 and 3.1. We are researching this problem and will post new information here as it becomes available.

Additional query words: buglist3.00 buglist3.10 3.00 3.10

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Technology : kbAudDeveloper kbSDKSearch kbWinSDKSearch