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[46.114.158.132]) by smtp.googlemail.com with ESMTPSA id x11sm14180332wmi.3.2021.03.21.13.27.46 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Sun, 21 Mar 2021 13:27:46 -0700 (PDT) From: =?utf-8?Q?Klaus_K=C3=BCchemann?= Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 (Mac OS X Mail 14.0 \(3654.60.0.2.21\)) Subject: Re: RPi and powerd, was: Re: RPI4 clock speeds and serial port ( temperatures idle and -j4 buildworld buildkernel ) Date: Sun, 21 Mar 2021 21:27:44 +0100 References: <20210319195019.GA39087@www.zefox.net> <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> <5BF4DC26-8CCC-48E8-802F-34C42084D47F@yahoo.com> <20210321181339.GA56351@www.zefox.net> To: bob prohaska , freebsd-arm@freebsd.org In-Reply-To: <20210321181339.GA56351@www.zefox.net> Message-Id: <01787975-3D1A-4D28-8F0F-957D6842D487@googlemail.com> X-Mailer: Apple Mail (2.3654.60.0.2.21) X-Rspamd-Queue-Id: 4F3Thj4YwKz3tgt X-Spamd-Bar: - X-Spamd-Result: default: False [-1.50 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; TO_DN_SOME(0.00)[]; FREEMAIL_FROM(0.00)[googlemail.com]; MV_CASE(0.50)[]; R_SPF_ALLOW(-0.20)[+ip6:2a00:1450:4000::/36]; RCVD_COUNT_THREE(0.00)[3]; DKIM_TRACE(0.00)[googlemail.com:+]; RCPT_COUNT_TWO(0.00)[2]; DMARC_POLICY_ALLOW(-0.50)[googlemail.com,quarantine]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; RBL_DBL_DONT_QUERY_IPS(0.00)[2a00:1450:4864:20::42d:from]; FREEMAIL_ENVFROM(0.00)[googlemail.com]; MID_RHS_MATCH_FROM(0.00)[]; ASN(0.00)[asn:15169, ipnet:2a00:1450::/32, country:US]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; R_DKIM_ALLOW(-0.20)[googlemail.com:s=20161025]; RECEIVED_SPAMHAUS_PBL(0.00)[46.114.158.132:received]; FROM_HAS_DN(0.00)[]; DWL_DNSWL_NONE(0.00)[googlemail.com:dkim]; NEURAL_SPAM_SHORT(1.00)[0.998]; NEURAL_HAM_LONG(-1.00)[-1.000]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-arm@freebsd.org]; SPAMHAUS_ZRD(0.00)[2a00:1450:4864:20::42d:from:127.0.2.255]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[2a00:1450:4864:20::42d:from]; RCVD_TLS_ALL(0.00)[]; MAILMAN_DEST(0.00)[freebsd-arm] X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Porting FreeBSD to ARM processors List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 21 Mar 2021 20:27:50 -0000 > Am 21.03.2021 um 19:13 schrieb bob prohaska : >=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 : >=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.