Date: Sun, 04 May 2014 13:05:22 -0400 From: Allan Jude <freebsd@allanjude.com> To: freebsd-current@freebsd.org Subject: Re: Leaving the Desktop Market Message-ID: <53667352.4030807@allanjude.com> In-Reply-To: <53666102.5080205@allanjude.com> References: <CAF6rxgkeBozvfV-L0%2BrFZ6fWRn0=Gi3BNq1kPL=-HTq0TD6MkQ@mail.gmail.com> <A70900DF-4BAA-427F-8731-01211FFD1887@mail.turbofuzz.com> <3F7430D7-3C0F-43E1-8EBD-8AA4F701497C@FreeBSD.org> <20140503155745.GA2457@La-Habana> <CAJ-VmokHQvb2S-1c08J3RECUMosQ%2Bcd1gdB91LAb5famfKqP5w@mail.gmail.com> <20140503192305.GA1847@La-Habana> <CAJ-Vmon1ZYX18SN1f=z9N=hSgpZrAxXMxiJBUDWk6LYvMRiHmw@mail.gmail.com> <CAN6yY1uo08PDsYJ2KQNjw4hYuNsNJUvRu1b0cG%2B387F6Owkukg@mail.gmail.com> <20140504142839.GA9271@La-Habana> <53666102.5080205@allanjude.com>
index | next in thread | previous in thread | raw e-mail
[-- Attachment #1 --] On 2014-05-04 11:47, Allan Jude wrote: > On 2014-05-04 10:28, Matthias Apitz wrote: >> El día Saturday, May 03, 2014 a las 04:59:48PM -0700, Kevin Oberman escribió: >> >>> On Sat, May 3, 2014 at 1:25 PM, Adrian Chadd <adrian@freebsd.org> wrote: >>> >>>> Set it to the lowest available Cx state that you see in dev.cpu.0 . >>>> >>>> >>> Available is not required. Set it to C8. That guarantees that you will use >>> the lowest available. The correct incantation in rc.conf is "Cmax". >>> performance_cx_lowest="Cmax" >>> economy_cx_lowest="Cmax" >>> >>> But, unless you want laggy performance, you will probably also want: >>> hint.p4tcc.0.disabled=1 >>> hint.acpi_throttle.0.disabled=1 >>> in /boot/loader.conf. Low Cx states and TCC/throttling simply don't mix >>> well and TCC is not effective, as mentioned earlier in this thread. >> >> Re/ powerd I have in /etc/rc.conf: >> >> # powerd >> powerd_enable="YES" >> powerd_flags="-a max -b adp" >> # >> performance_cx_lowest="Cmax" >> economy_cx_lowest="Cmax" >> >> (and the additional hint.* in /boot/loader.conf as well). Which process >> 'performance_cx_lowest' and 'economy_cx_lowest' target exactly as config >> values? >> >> Thx >> >> matthias >> > > In a pretty unscientific test on my laptop (Lenovo T530 with Intel i5 > 3320M), setting hw.acpi.cpu.cx_lowest=C8 lowered power consumption at > idle by about 3 watts, which adds about 30-45 minutes to my battery life > during conservative usage. > > Using PCBSD 10, so hint.acpi_throttle.0.disabled=1 was already set > (apparently solves some issue with powerd on some AMD systems) > > I have added hint.p4tcc.0.disabled=1 but not sure where to expect to see > a difference. > I see the difference now, with the p4tcc stuff disabled, the lowest cpufreq is now 1200mhz instead of 150mhz -- Allan Jude [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.16 (MingW32) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBAgAGBQJTZnNVAAoJEJrBFpNRJZKfNR8QAIpRuQ5XcJpfG8zirSLONk8G 9ABsRnbQ2vn8yNX9xk/vQJQs/BeMaytvoFlemEPUfYpFlIAWmazpSLRDFJGOrCoK 2khAZOT2xDLWx0Db/bvwuy7T8oVHBx9W/sk/cheEvJQDTVL6qoQUQ+EcF1OWMlko 7NV6La5uDmUSvmssgq/xUjAjAfj6KSVWp6zWMy/OflfpmG9xHXYqhSPlmU+DdRYb kebQGDnrrS7PSLS3RAqf2AAsZ46kK1wXIDIC8msTvxFUPWqaM28n4Q1rHjD25uEl Q2sZh0wx67420aVcgEXKUgsDI//m0LqjSU6LQMfUwS85eqEcVzXmMHpZjFKbVM+5 cJODECfEXatRUwWsSTmucDPm3/H0CJxaNI8iZC6IzDBfG06r5u/W3IDD5xYMjfUk k5A6/0kI98WiDiBAsH5UjnsRcyXCyUZk4uA12weyj+4JVRWsmH3rrU/TOXlGsess +4+O5reaqMdK627B3TxZmaSdeuCct2UUlp7rTwljTMCMIy44UwIAPVDqUWHQgc93 njOpCl1UrrV7Imjihhvu3LE11EjVMwrvOGJTubP47BG4C3wPyGXs+3EzGTRoJCrG hgfsq31RBSAd+OWx0mPw+NaZgETMiuO75TAo6YQJRs+PX+Oq6IOA2SdEzY4rQI1k TUHZtLFk21DPuksFNJj4 =yWlX -----END PGP SIGNATURE-----help
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?53667352.4030807>