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Alanw
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Joined: 07 Dec 2009
Posts: 15
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 Posted: Mon Dec 07, 2009 7:19 pm Post subject: intel (nehalem) and turbo boost support |
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Hello,
I'm curious if anyone here has configured a Gentoo system to take advantage of Core i7 / Nehalem's "Turbo Boost" technology? If so, do you have any pointers?
So far Google has provided mixed results, and overall very little information on this subject. (besides people having trouble) One thing I found interesting is RHEL supposedly supporting it out of the box. http://kbase.redhat.com/faq/docs/DOC-17124 Yet I can't find anything detailing what they're doing to claim this.
I've just built a nehalem system with gentoo using the 2.6.31-r6 kernel with ACPI and the cpufreq governor set to "performance" as default. I haven't had time to do anything exhaustive, but upon first sight it doesn't appear that turbo boost is working.
| Code: | | # cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_available_frequencies |
In my case returns 16 lines of varying frequencies from 2.267 GHZ - 1.6 GHZ. None are above my actual chip MHZ, which is 2.267.
Thanks,
Alan
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www.alan-warren.com
gentoo 2.6.39-gentoo-r3
[1]Dual Xeon E5645 @ 3.7Ghz
24 GB RAM
Nvidia Quadro 4000 Fermi
[2]Dual Xeon E5520 @ 2.26Ghz
24 GB RAM
Nvidia GeForce GTX 285 |
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Alanw
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