On 15/06/13 04:55, Ben Hutchings wrote: > On Wed, 2013-06-12 at 19:20 +0200, Carlos Alberto Lopez Perez wrote: >> Source: linux >> Version: 3.9.5-1 >> Severity: wishlist >> >> >> Please consider enabling X86_INTEL_PSTATE on 3.9 or superior >> >> This is a new CPU power scaling driver specially optimized for the >> latest Intel CPUs (Sandy Bridge and Ivy Bridge) >> >> https://lwn.net/Articles/536017/ > > I don't think it's ready yet. I'll enable it in experimental though. > > Ben. I agree. I have seen significant performance reductions on my Xeon E3-1200 server with X86_INTEL_PSTATE enabled, though I admit I don't have any figures to back this up. HTH, Chris -- Chris Boot debian@bootc.net GPG: 1DE8 6AB0 1897 A330 D973 D77C 50DD 5A29 FB09 9999
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