energy Questions

1

Solved

I am aware of a few tools that measure power consumption of programs, such as powerTOP, RAPL and the like. However, I was wondering if there exists some kind of benchmark such as Agner Fog's benchm...
Forespent asked 12/9, 2022 at 16:0

13

I heard a rumor, that Java consumes less energy than PHP and was wondering if and how this would be true. I'm currently working in a company where we base most of our apps on PHP. Power consumption...
Schoonover asked 23/8, 2009 at 15:49

1

First of all, I do not know whether I should be asking this here or in the Electronics StackExchange, so please let me know if you think I should ask it there. I am interested in measuring the ener...
Ween asked 10/6, 2021 at 16:46

2

Is it possible to determine or even reasonably estimate how much power a program is using? The idea being to profile my code in terms of power consumption instead of just typical performance. Is i...
Delineator asked 3/1, 2014 at 15:51

2

Solved

From my reading and experimentation I have found that Android devices use some method to prevent duplicate reading of a tag (as discussed here). This is great for power conservation however limits ...
Insurgency asked 5/5, 2016 at 8:2

14

Solved

I've read across several Image Processing books and websites, but I'm still not sure the true definition of the term "energy" in Image Processing. I've found several definition, but sometimes they ...

2

Solved

I noticed that perf list now has the option to measure power consumption. You can use it as follows: $ perf stat -e power/energy-cores/ ./a.out Performance counter stats for 'system wide': 8.55...
Hass asked 2/5, 2019 at 16:3

2

Solved

I'm checking the energy profiling of an app that loads a lot of content into web view. I'm greeted with the following gauge. I see that the energy impact is high, and there's a consistently high ov...
Toffeenosed asked 21/9, 2015 at 15:10

1

I have created an iOS app and it's first phase is almost complete. Basic flow of app is that a user can add his offer. Other users can avail this offer by booking it. The number of offers keeps on ...
Wastrel asked 26/3, 2018 at 6:56

2

We were working on our audio player project on mac and noticed that the power usage was so high (about 7x that of google chrome doing the same workload.) I used xcode's energy profiling tool, one ...
Credent asked 27/3, 2015 at 20:58

5

Is it possible to re-assign the Win+L hotkey to another executable/shortcut? Use-case - I would like to switch off the monitor of my laptop as soon as it is locked. I know of a executable which ca...
Forwarder asked 19/11, 2008 at 5:16

4

It's a general view that a faster code will consume less power because you can put CPU in idle state for more time but when we talk about energy consumption, is following a possibility: Suppose th...
Com asked 20/1, 2011 at 11:17

1

I want to measure properties like energy consumption of my Android application. I know about tools like PowerTutor, but because I need a more accurate tool I want to use Qualcomm's trepn profiler....
Eldrid asked 26/12, 2013 at 15:54

3

Solved

Very simple question, probably difficult answer: Does using SSE instructions for example for parallel sum/min/max/average operations consume more power than doing any other instructions (e.g. a si...
Cyclostome asked 1/11, 2013 at 8:5

7

I'm looking for a list of all the components and their power drainage on an up-to-date smart phone. Accelerometer, gyroscope, magnetometer, etc. Display WiFi Bluetooth GPS CPU Camera Microphone e...
Postmortem asked 30/5, 2012 at 22:28

3

I have followed the Apple steps to get my app energy usage level from my device using Energy Diagnostics Instruments (https://developer.apple.com/library/ios/#documentation/DeveloperTools/Conceptua...
Phore asked 10/3, 2012 at 11:59

1

Solved

I tried to create a 128Bit with the iOS CoreBluetooth framework. The code that I have written is here: //16Bit Value-String static NSString * const ADVERTISING_SERVICE_16=@"FFC0"; //Var for 128...
Procedure asked 4/9, 2012 at 12:43

2

Solved

I am making an application that requires user to send their GPS location to the server. I need it to be done for say every 10 seconds, which is heavy on the energy budget. Is there any open sourc...
Jolynnjon asked 6/6, 2012 at 19:32

3

the following are listed in CLLocation.h but from my experience they are deceiving names- possibly originally thought up to serve two purposes, 1. to test the accuracy of the location returned, but...
Stockyard asked 5/8, 2010 at 3:53

8

Solved

I have a (theoretical) network with N nodes, each with their own fixed location. Each node sends one message per cycle, which needs to reach the root either directly or via other nodes. The energ...
Imitation asked 4/3, 2010 at 10:38
1

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