Date: Wed, 9 Apr 2014 11:22:18 -0700 From: hiren panchasara <hiren.panchasara@gmail.com> To: Anton Sayetsky <vsjcfm@gmail.com> Cc: freebsd-acpi@freebsd.org Subject: Re: C-States configuration Message-ID: <CALCpEUGShjBoZ850L9KGJou4s_Onj_-oduh7Ttc4itqCB518OA@mail.gmail.com> In-Reply-To: <CAFG2KCLgXOWXsRQTXAOLgK%2BihdOU9Pp=jhX1thg_qHePUxii5g@mail.gmail.com> References: <CALCpEUGxSSFRNk8jj5Mm1vVz5zWa2=B58%2B=JEybAv3rvzrZ%2BMQ@mail.gmail.com> <CAFG2KCLgXOWXsRQTXAOLgK%2BihdOU9Pp=jhX1thg_qHePUxii5g@mail.gmail.com>
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On Wed, Apr 9, 2014 at 11:07 AM, Anton Sayetsky <vsjcfm@gmail.com> wrote: > 2014-04-09 20:40 GMT+03:00 hiren panchasara <hiren.panchasara@gmail.com>: >> I am running -current on my T420 at r263906M >> >> debug.acpi.acpi_ca_version: 20130823 >> >> o/p of sysctl -a | grep acpi - http://bpaste.net/show/199806/ >> >> and I have following in my rc.conf: >> >> performance_cx_lowest="Cmax" >> economy_cx_lowest="Cmax" >> >> But I still get: >> >> % sysctl -a | grep cx_lowest >> hw.acpi.cpu.cx_lowest: C1 >> dev.cpu.0.cx_lowest: C1 >> dev.cpu.1.cx_lowest: C1 >> dev.cpu.2.cx_lowest: C1 >> dev.cpu.3.cx_lowest: C1 >> >> And I can do: >> # sysctl dev.cpu.0.cx_lowest=Cmax >> dev.cpu.0.cx_lowest: C1 -> C8 >> >> that tells me that Cmax is C8. >> >> % sysctl -d dev.cpu.0.cx_lowest >> dev.cpu.0.cx_lowest: lowest Cx sleep state to use >> >> I was expecting cx_lowest to be set to C8 because of rc.conf config I have. >> >> What am I missing here? >> >> cheers, >> Hiren > Try to set LOW instead of Cmax. I will try it again. Interestingly enough, on an amd machine, it worked as I expected with a bit more current version of -head but same version of acpica: debug.acpi.acpi_ca_version: 20130823 cpus came up with cx_lowest set to C8 with Cmax in rc.conf cheers, Hiren
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