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WinNT 4.0 PIII 550 2M Cache

By rsutton ·
I have heard rumors that there is a registery setting to tell WInNT 4.0 that there is more then the standard 256 or 512 M of L2 cache on the cpu. Is this true? What is the setting and is there any documentation on it?

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WinNT 4.0 PIII 550 2M Cache

by howarde In reply to WinNT 4.0 PIII 550 2M Cac ...

Yes its true.

HKLM\System\CurrentControlSet\control\sessionmanager\memory management
**One path wrapped

The value is SecondLevelDataCache
default is 0 modify to the amount of L2 in K
(ie 2M is 204

MS KB Q183063

However, it should have little if any effect on PII or higher processors

Hope this helps.
Howie

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WinNT 4.0 PIII 550 2M Cache

by rsutton In reply to WinNT 4.0 PIII 550 2M Cac ...

The question was auto-closed by TechRepublic

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WinNT 4.0 PIII 550 2M Cache

by jwildwind In reply to WinNT 4.0 PIII 550 2M Cac ...

Found this on TechNet under Registry Tweaks:
Sounds like you should be very careful when doing this...

Getting the Most from Your Cache

By default, the NT HAL tries to recognize the amount of L2 cache on your motherboard. Sometimes it succeeds, and sometimes it fails. You can make sure that the HAL knows how much cache you have installed by checking the value of the SecondLevelDataCache REG_DWORD value under the HKLM\System\CurrentControlSet\Control\Session Manager\Memory Management key.
When this value is 0, that tells the HAL that you have 256Kb of L2 cache. If you have a different amount installed, set SecondLevelDataCache to the amount, in Kb, of cache you've actually got. For example, if you have a 512Kb cache, set the value to be a decimal value of 512 or a hex value of 0x200. If you get this wrong, your machine may be unstable, so make sure to enter the right value in the right base.

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WinNT 4.0 PIII 550 2M Cache

by rsutton In reply to WinNT 4.0 PIII 550 2M Cac ...

The question was auto-closed by TechRepublic

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WinNT 4.0 PIII 550 2M Cache

by rsutton In reply to WinNT 4.0 PIII 550 2M Cac ...

This question was auto closed due to inactivity

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