Date: Fri, 31 May 2013 13:20:34 -0400 From: Adam McDougall <mcdouga9@egr.msu.edu> To: freebsd-amd64@freebsd.org Subject: Re: idle process keeping cpu 150% busy in freebsd 9.1-amd64 Message-ID: <51A8DBE2.2030901@egr.msu.edu> In-Reply-To: <51A8D208.2040702@att.net> References: <51A7B693.8050705@att.net> <201305310836.02815.jhb@freebsd.org> <51A8B806.5090100@att.net> <201305311127.13846.jhb@freebsd.org> <51A8D208.2040702@att.net>
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On 05/31/13 12:38, Kostas Oikonomou wrote: > John, > > Thanks. I am trying your suggestions on my Dell laptop (Intel Core i7, > 4 cores). > > First off, my /etc/rc.conf already had > > ------------------------------------------------------------------------ > # powerd: adaptive speed while on AC power, adaptive while on battery power > powerd_enable="YES" > powerd_flags="-a hiadaptive -b adaptive" # set CPU frequency > ------------------------------------------------------------------------ > > and powerd was running. With that, the output of sysctl was like what > you sent (the default). > > Now my /etc/rc.conf reads > ------------------------------------------------------------------------ > # powerd: adaptive speed while on AC power, adaptive while on battery power > powerd_enable="YES" > powerd_flags="-a hiadaptive -b adaptive" # set CPU frequency > > # per John Baldwin email > performance_cx_lowest=LOW > ------------------------------------------------------------------------ Take a look at this excellent guide too: https://wiki.freebsd.org/TuningPowerConsumption
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