Date: Sun, 21 Mar 2021 21:27:44 +0100 From: =?utf-8?Q?Klaus_K=C3=BCchemann?= <maciphone2@googlemail.com> To: bob prohaska <fbsd@www.zefox.net>, freebsd-arm@freebsd.org Subject: Re: RPi and powerd, was: Re: RPI4 clock speeds and serial port ( temperatures idle and -j4 buildworld buildkernel ) Message-ID: <01787975-3D1A-4D28-8F0F-957D6842D487@googlemail.com> In-Reply-To: <20210321181339.GA56351@www.zefox.net> References: <FA5A110A-4E7A-4381-BBE5-9B3022CA9008@googlemail.com> <20210319195019.GA39087@www.zefox.net> <FDBC2E89-8473-4C3A-B12E-78821949FDDB@yahoo.com> <20210320005302.GA40542@www.zefox.net> <81CB0CCA-59AC-49A2-9372-4E2C22E3214D@googlemail.com> <20210320155638.GA41617@www.zefox.net> <63E61033-667C-4A08-9012-7D987B652176@yahoo.com> <20210320182821.GA49050@www.zefox.net> <AD8A445A-DF90-4525-8042-EA2A667558FE@yahoo.com> <5BF4DC26-8CCC-48E8-802F-34C42084D47F@yahoo.com> <20210321181339.GA56351@www.zefox.net>
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> Am 21.03.2021 um 19:13 schrieb bob prohaska <fbsd@www.zefox.net>: >=20 > There was an effect from powerd on the Pi2, but only > 600MHz > 900MHz. The Pi3 went from 600 to 1200, the > Pi4 600 to 1500. yes, these are the default max. (non overclocked) values (900 Pi2/1200 = Pi3/ 1500 Pi4). > Am 21.03.2021 um 19:13 schrieb bob prohaska <fbsd@www.zefox.net>: >=20 >=20 > I always thought of powerd as a complication inflicted to > conserve battery life. I had no idea it could be used for > performance enhancement. Thank you, Klaus! >=20 > bob prohaska >=20 `happy to hear it works for you. Yes, the good thing is : e.g., for e.g. battery/electricity Pi4 goes automatically back to 600 = if cpu-power is no more needed(after make buildworld buildkernel ). Regards K.
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