i386/135447: [i386] [request] Intel Core i7 and Nehalem-EP new features not supported

brucec at FreeBSD.org brucec at FreeBSD.org
Sun Sep 12 10:40:05 UTC 2010


Synopsis: [i386] [request] Intel Core i7 and Nehalem-EP new features not supported

State-Changed-From-To: closed->open 
State-Changed-By: brucec
State-Changed-When: Sun Sep 12 10:35:23 UTC 2010
State-Changed-Why: 
This does appear to be a bug, but only in the ACPI code: Hyperthreading 
isn't guaranteed to give a performance increase for every workload, and 
TurboBoost is only seen once lower Cx states are enabled.


Responsible-Changed-From-To: brucec->freebsd-acpi 
Responsible-Changed-By: brucec
Responsible-Changed-When: Sun Sep 12 10:35:23 UTC 2010
Responsible-Changed-Why: 
Over to the acpi list.
This appears to be a problem with ACPI on the machine, because C2 and C3 
states should probably be available.

http://www.freebsd.org/cgi/query-pr.cgi?pr=135447


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