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Groups > comp.lang.c++ > #82416
| From | David Brown <david.brown@hesbynett.no> |
|---|---|
| Newsgroups | comp.lang.c, comp.lang.c++ |
| Subject | Re: "C Is The Greenest Programming Language" by: Chris Lott |
| Date | 2021-11-23 19:24 +0100 |
| Organization | A noiseless patient Spider |
| Message-ID | <snjbln$7rl$1@dont-email.me> (permalink) |
| References | <snh51g$c1q$1@dont-email.me> <snivri$15p1$1@gioia.aioe.org> <snj2k7$vojf$1@news.xmission.com> <snj65u$tmi$1@dont-email.me> <snj6mo$q04$1@gioia.aioe.org> |
Cross-posted to 2 groups.
On 23/11/2021 18:00, DozingDog@thekennel.co wrote: > On Tue, 23 Nov 2021 17:51:09 +0100 > David Brown <david.brown@hesbynett.no> wrote: >> The power consumption for a processor is the sum of the static power and >> the dynamic power. Dynamic power is proportional to the frequency and >> the square of the voltage. And energy usage is power times time. >> >> A processor that is designed to run at high frequency is likely to have >> high-leakage transistors, and therefore high static power - when the >> circuits are enabled. But the faster you get the work done, the higher >> a proportion of the time you can have in low-power modes with minimal >> static power. On the other hand, higher frequencies may need higher >> voltages. >> >> As a rule of thumb, it is better to run your cpu at its highest >> frequency - or at the highest it can do without raising the voltage - >> and get the calculation done fast. Then you can spend more time in >> low-power sleep modes. However, entering and exiting sleep modes takes >> time and energy, so you don't want to do it too often - hence the >> "big-little" processor combinations where you have a slower core that >> can be switched on and off more efficiently. > > Why do many battery powered systems throttle the CPU to save the battery when > its getting low then and why does undertaking CPU intensive tasks deplete the > battery faster? You seem to be claiming that you can get something for nothing. > If you have to do a certain calculation or set of calculations, it is /usually/ more efficient to do them quickly and then let the processor sleep deeper and longer. Modern cpus generally do /not/ throttle the cpu speed to save battery power. It only makes sense to slow down the processor if you have large leakage currents that you can't turn off, in which case a slow clock can mean lower energy overall. With modern devices, clock gating lets you turn off all or parts of the core much more effectively.
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"C Is The Greenest Programming Language" by: Chris Lott Lynn McGuire <lynnmcguire5@gmail.com> - 2021-11-22 16:19 -0600
Re: "C Is The Greenest Programming Language" by: Chris Lott "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2021-11-22 14:58 -0800
Re: "C Is The Greenest Programming Language" by: Chris Lott Juha Nieminen <nospam@thanks.invalid> - 2021-11-23 07:10 +0000
Re: "C Is The Greenest Programming Language" by: Chris Lott "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2021-11-23 13:12 -0800
Re: "C Is The Greenest Programming Language" by: Chris Lott Juha Nieminen <nospam@thanks.invalid> - 2021-11-24 10:54 +0000
Re: "C Is The Greenest Programming Language" by: Chris Lott Philipp Klaus Krause <pkk@spth.de> - 2021-11-24 12:01 +0100
Re: "C Is The Greenest Programming Language" by: Chris Lott David Brown <david.brown@hesbynett.no> - 2021-11-24 13:58 +0100
Re: "C Is The Greenest Programming Language" by: Chris Lott "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2021-11-23 13:23 -0800
Re: "C Is The Greenest Programming Language" by: Chris Lott Richard Damon <Richard@Damon-Family.org> - 2021-11-22 18:25 -0500
Re: "C Is The Greenest Programming Language" by: Chris Lott Juha Nieminen <nospam@thanks.invalid> - 2021-11-23 07:21 +0000
Re: "C Is The Greenest Programming Language" by: Chris Lott Guillaume <message@bottle.org> - 2021-11-23 17:56 +0100
Re: "C Is The Greenest Programming Language" by: Chris Lott Juha Nieminen <nospam@thanks.invalid> - 2021-11-24 10:55 +0000
Re: "C Is The Greenest Programming Language" by: Chris Lott Öö Tiib <ootiib@hot.ee> - 2021-11-24 05:54 -0800
Re: "C Is The Greenest Programming Language" by: Chris Lott Lynn McGuire <lynnmcguire5@gmail.com> - 2021-11-23 19:00 -0600
Re: "C Is The Greenest Programming Language" by: Chris Lott scott@slp53.sl.home (Scott Lurndal) - 2021-11-24 16:04 +0000
Re: "C Is The Greenest Programming Language" by: Chris Lott Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-12-16 07:55 -0800
Re: "C Is The Greenest Programming Language" by: Chris Lott legalize+jeeves@mail.xmission.com (Richard) - 2021-12-16 16:24 +0000
Re: "C Is The Greenest Programming Language" by: Chris Lott Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-12-16 19:46 -0800
Re: "C Is The Greenest Programming Language" by: Chris Lott Juha Nieminen <nospam@thanks.invalid> - 2021-12-17 06:30 +0000
Re: "C Is The Greenest Programming Language" by: Chris Lott Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-12-18 07:45 -0800
Re: "C Is The Greenest Programming Language" by: Chris Lott legalize+jeeves@mail.xmission.com (Richard) - 2021-12-30 12:01 +0000
Re: "C Is The Greenest Programming Language" by: Chris Lott Tim Rentsch <tr.17687@z991.linuxsc.com> - 2022-01-16 12:22 -0800
Re: "C Is The Greenest Programming Language" by: Chris Lott legalize+jeeves@mail.xmission.com (Richard) - 2022-01-17 21:28 +0000
Re: "C Is The Greenest Programming Language" by: Chris Lott Tim Rentsch <tr.17687@z991.linuxsc.com> - 2022-01-17 15:48 -0800
Re: "C Is The Greenest Programming Language" by: Chris Lott legalize+jeeves@mail.xmission.com (Richard) - 2022-01-18 06:47 +0000
Re: "C Is The Greenest Programming Language" by: Chris Lott Philipp Klaus Krause <pkk@spth.de> - 2021-11-24 11:43 +0100
Re: "C Is The Greenest Programming Language" by: Chris Lott om@iki.fi (Otto J. Makela) - 2021-11-23 14:17 +0200
Re: "C Is The Greenest Programming Language" by: Chris Lott DozingDog@thekennel.co - 2021-11-23 16:53 +0000
Re: "C Is The Greenest Programming Language" by: Chris Lott om@iki.fi (Otto J. Makela) - 2021-11-24 11:40 +0200
Re: "C Is The Greenest Programming Language" by: Chris Lott DozingDog@thekennel.co - 2021-11-24 15:49 +0000
Re: "C Is The Greenest Programming Language" by: Chris Lott Lynn McGuire <lynnmcguire5@gmail.com> - 2021-11-23 19:01 -0600
Re: "C Is The Greenest Programming Language" by: Chris Lott om@iki.fi (Otto J. Makela) - 2021-11-24 11:33 +0200
Re: "C Is The Greenest Programming Language" by: Chris Lott Lynn McGuire <lynnmcguire5@gmail.com> - 2021-11-24 15:28 -0600
Re: "C Is The Greenest Programming Language" by: Chris Lott Bonita Montero <Bonita.Montero@gmail.com> - 2021-11-23 14:39 +0100
Re: "C Is The Greenest Programming Language" by: Chris Lott DozingDog@thekennel.co - 2021-11-23 16:55 +0000
Re: "C Is The Greenest Programming Language" by: Chris Lott Richard Damon <Richard@Damon-Family.org> - 2021-11-23 12:28 -0500
Re: "C Is The Greenest Programming Language" by: Chris Lott Bonita Montero <Bonita.Montero@gmail.com> - 2021-11-23 19:05 +0100
Re: "C Is The Greenest Programming Language" by: Chris Lott Richard Damon <Richard@Damon-Family.org> - 2021-11-23 13:41 -0500
Re: "C Is The Greenest Programming Language" by: Chris Lott Bonita Montero <Bonita.Montero@gmail.com> - 2021-11-23 19:53 +0100
Re: "C Is The Greenest Programming Language" by: Chris Lott Richard Damon <Richard@Damon-Family.org> - 2021-11-23 21:27 -0500
Re: "C Is The Greenest Programming Language" by: Chris Lott Bonita Montero <Bonita.Montero@gmail.com> - 2021-11-24 18:32 +0100
Re: "C Is The Greenest Programming Language" by: Chris Lott Richard Damon <Richard@Damon-Family.org> - 2021-11-24 12:54 -0500
Re: "C Is The Greenest Programming Language" by: Chris Lott Bonita Montero <Bonita.Montero@gmail.com> - 2021-11-24 20:52 +0100
Re: "C Is The Greenest Programming Language" by: Chris Lott Richard Damon <Richard@Damon-Family.org> - 2021-11-24 15:13 -0500
Re: "C Is The Greenest Programming Language" by: Chris Lott Bonita Montero <Bonita.Montero@gmail.com> - 2021-11-25 19:13 +0100
Re: "C Is The Greenest Programming Language" by: Chris Lott DozingDog@thekennel.co - 2021-11-24 15:48 +0000
Re: "C Is The Greenest Programming Language" by: Chris Lott Richard Damon <Richard@Damon-Family.org> - 2021-11-24 11:54 -0500
Re: "C Is The Greenest Programming Language" by: Chris Lott DozingDog@thekennel.co - 2021-11-25 11:19 +0000
Re: "C Is The Greenest Programming Language" by: Chris Lott Juha Nieminen <nospam@thanks.invalid> - 2021-11-25 11:46 +0000
Re: "C Is The Greenest Programming Language" by: Chris Lott DozingDog@thekennel.co - 2021-11-25 15:57 +0000
Re: "C Is The Greenest Programming Language" by: Chris Lott Richard Damon <Richard@Damon-Family.org> - 2021-11-25 07:04 -0500
Re: "C Is The Greenest Programming Language" by: Chris Lott DozingDog@thekennel.co - 2021-11-25 15:59 +0000
Re: "C Is The Greenest Programming Language" by: Chris Lott Manfred <noname@add.invalid> - 2021-11-23 16:03 +0100
Re: "C Is The Greenest Programming Language" by: Chris Lott gazelle@shell.xmission.com (Kenny McCormack) - 2021-11-23 15:50 +0000
Re: "C Is The Greenest Programming Language" by: Chris Lott David Brown <david.brown@hesbynett.no> - 2021-11-23 17:51 +0100
Re: "C Is The Greenest Programming Language" by: Chris Lott DozingDog@thekennel.co - 2021-11-23 17:00 +0000
Re: "C Is The Greenest Programming Language" by: Chris Lott Richard Damon <Richard@Damon-Family.org> - 2021-11-23 12:36 -0500
Re: "C Is The Greenest Programming Language" by: Chris Lott David Brown <david.brown@hesbynett.no> - 2021-11-23 19:24 +0100
Re: "C Is The Greenest Programming Language" by: Chris Lott Richard Damon <Richard@Damon-Family.org> - 2021-11-23 13:50 -0500
Re: "C Is The Greenest Programming Language" by: Chris Lott David Brown <david.brown@hesbynett.no> - 2021-11-23 20:02 +0100
Re: "C Is The Greenest Programming Language" by: Chris Lott Manfred <noname@add.invalid> - 2021-11-23 20:59 +0100
Re: "C Is The Greenest Programming Language" by: Chris Lott Bart <bc@freeuk.com> - 2021-11-23 20:50 +0000
Re: "C Is The Greenest Programming Language" by: Chris Lott Ian Collins <ian-news@hotmail.com> - 2021-11-24 11:18 +1300
Re: "C Is The Greenest Programming Language" by: Chris Lott Bart <bc@freeuk.com> - 2021-11-23 22:58 +0000
Re: "C Is The Greenest Programming Language" by: Chris Lott David Brown <david.brown@hesbynett.no> - 2021-11-23 23:46 +0100
Re: "C Is The Greenest Programming Language" by: Chris Lott Bart <bc@freeuk.com> - 2021-11-24 13:59 +0000
Re: "C Is The Greenest Programming Language" by: Chris Lott antispam@math.uni.wroc.pl - 2021-12-11 13:25 +0000
Re: "C Is The Greenest Programming Language" by: Chris Lott Bart <bc@freeuk.com> - 2021-12-11 14:54 +0000
Re: "C Is The Greenest Programming Language" by: Chris Lott Manfred <noname@add.invalid> - 2021-11-25 12:12 +0100
Re: "C Is The Greenest Programming Language" by: Chris Lott David Brown <david.brown@hesbynett.no> - 2021-11-23 23:35 +0100
Re: "C Is The Greenest Programming Language" by: Chris Lott Manfred <noname@add.invalid> - 2021-11-24 15:30 +0100
Re: "C Is The Greenest Programming Language" by: Chris Lott Bart <bc@freeuk.com> - 2021-11-24 14:43 +0000
Re: "C Is The Greenest Programming Language" by: Chris Lott Manfred <noname@add.invalid> - 2021-11-23 20:29 +0100
Re: "C Is The Greenest Programming Language" by: Chris Lott Bart <bc@freeuk.com> - 2021-11-23 16:14 +0000
Re: "C Is The Greenest Programming Language" by: Chris Lott Philipp Klaus Krause <pkk@spth.de> - 2021-11-24 11:56 +0100
Re: "C Is The Greenest Programming Language" by: Chris Lott Öö Tiib <ootiib@hot.ee> - 2021-11-24 06:03 -0800
Re: "C Is The Greenest Programming Language" by: Chris Lott Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2021-11-24 10:14 -0800
Re: "C Is The Greenest Programming Language" by: Chris Lott David Brown <david.brown@hesbynett.no> - 2021-11-24 19:55 +0100
Re: "C Is The Greenest Programming Language" by: Chris Lott Philipp Klaus Krause <pkk@spth.de> - 2021-11-24 21:13 +0100
Re: "C Is The Greenest Programming Language" by: Chris Lott Philipp Klaus Krause <pkk@spth.de> - 2021-11-24 21:11 +0100
Re: "C Is The Greenest Programming Language" by: Chris Lott Philipp Klaus Krause <pkk@spth.de> - 2021-11-24 21:17 +0100
Re: "C Is The Greenest Programming Language" by: Chris Lott Bart <bc@freeuk.com> - 2021-11-24 20:42 +0000
Re: "C Is The Greenest Programming Language" by: Chris Lott Philipp Klaus Krause <pkk@spth.de> - 2021-11-24 23:25 +0100
Re: "C Is The Greenest Programming Language" by: Chris Lott antispam@math.uni.wroc.pl - 2021-12-11 14:07 +0000
Re: "C Is The Greenest Programming Language" by: Chris Lott Bart <bc@freeuk.com> - 2021-12-11 18:46 +0000
[OT] Lisp. Was: "C Is The Greenest Programming Language" by: Chris Lott Ben Bacarisse <ben.usenet@bsb.me.uk> - 2021-12-11 20:11 +0000
Re: "C Is The Greenest Programming Language" by: Chris Lott "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2021-11-24 14:12 -0800
Re: "C Is The Greenest Programming Language" by: Chris Lott Manfred <noname@add.invalid> - 2021-11-25 12:00 +0100
Re: "C Is The Greenest Programming Language" by: Chris Lott Paavo Helde <eesnimi@osa.pri.ee> - 2021-12-05 22:51 +0200
Re: "C Is The Greenest Programming Language" by: Chris Lott "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2021-12-05 19:20 -0800
Re: "C Is The Greenest Programming Language" by: Chris Lott Manfred <noname@add.invalid> - 2021-12-06 12:28 +0100
Re: "C Is The Greenest Programming Language" by: Chris Lott Paavo Helde <eesnimi@osa.pri.ee> - 2021-12-06 13:40 +0200
Re: "C Is The Greenest Programming Language" by: Chris Lott Bonita Montero <Bonita.Montero@gmail.com> - 2021-12-06 16:21 +0100
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