Feature #318
cpu powermanagement support with new and old state methood
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Description
Hi
It seems that new cpu powermanagement implementation changed how handle cpu pm features.
see openindiana bug http://www.illumos.org/issues/249
This feature request is to merge back old state methood so older processors also can have working cpu pm features.
As a reference :
http://opensolaris.org/jive/thread.jspa?messageID=424768
http://hub.opensolaris.org/bin/view/Community+Group+laptop/frkit
http://hub.opensolaris.org/bin/view/Community+Group+pm/
Thanks
Related issues
Updated by Albert Lee over 10 years ago
There is no "old driver" - powernow was always an add-on. I don't know what changed between 134 and the current build that would cause your CPU to lose frequency scaling.
Updated by Petri Kunnari over 10 years ago
Albert Lee wrote:
There is no "old driver" - powernow was always an add-on. I don't know what changed between 134 and the current build that would cause your CPU to lose frequency scaling.
Hi
Some browsing in net.
It seems frequency scaling support detection has changed what comes to P-state and C-state detection.
http://hub.opensolaris.org/bin/view/Project+tesla/CPUPM
http://en.wikipedia.org/wiki/Advanced_Configuration_and_Power_Interface
This feature request is : could illumos have both P and C state support ?
Updated by Milan Jurik almost 9 years ago
- Status changed from New to Closed
- Difficulty set to Medium
- Tags set to needs-triage
Petri Kunnari wrote:
Albert Lee wrote:
There is no "old driver" - powernow was always an add-on. I don't know what changed between 134 and the current build that would cause your CPU to lose frequency scaling.
Hi
Some browsing in net.
It seems frequency scaling support detection has changed what comes to P-state and C-state detection.
http://hub.opensolaris.org/bin/view/Project+tesla/CPUPM
http://en.wikipedia.org/wiki/Advanced_Configuration_and_Power_InterfaceThis feature request is : could illumos have both P and C state support ?
Illumos supports for P and C state but not on your system.
This issue is more related to the problem from http://www.illumos.org/issues/249 and needs investigation there.