Electron CPU usage

Mykle1

@cowboysdude said in Electron CPU usage:

my bathroom mirror is a pi and it’s updated and I’m not having any of these issues…

Would you please post your results, as everyone has above, for comparison? Raspbian version, MM version, Electron version and Pi version, and your nmon results

loctruong96

Yeah, many didn’t update npm and have no problem whatsoever, only two users reported having 404 problem and only 1 user tried to npm install npm@latest -g and it worked for him. I made a note in my guide up in the thread in regard of this issue.

cowboysdude

This post is deleted!

Mykle1

@loctruong96 said in Electron CPU usage:

I have also indicated a note in the install guide to have people aware of it.

Very good! Thanks!

Mr.Sponti

Hello, here are some details on my configuration and the steps I’ve made to downgrade from 2.1.1 to MM 2.1.0 & electron 1.4.15. First, I use the following PI and OS

Pi 3 Model B, 1024MB RAM
Raspbian Stretch

pi@Infoboard:~ $ uname -a
Linux Infoboard 4.9.41-v7+ #1023 SMP Tue Aug 8 16:00:15 BST 2017 armv7l GNU/Linux

Downgrade MagicMirror from 2.1.1 to 2.1.0:
-rename of my MagicMirror folder to MagicMirrorSAVE
-download and unzip MM 2.1.0
-rename dir MagicMirror-2.1.0 to MagicMirror
-cd to MagicMirror
-npm install electron@1.4.15 # I didn’t install electron as a global package
-nano package.json
–> change electron version under dependencies to electron 1.4.15

{
  "name": "magicmirror",
  "version": "2.1.0",
  "description": "A modular interface for smart mirrors.",
  "main": "js/electron.js",
  "scripts": {
    "start": "electron js/electron.js"
  },
  "repository": {
    "type": "git",
 ...
 "dependencies": {
    "electron": "1.4.15",
    "express": "^4.14.0",
    "express-ipfilter": "latest",
    "feedme": "latest",
....

now, install MagicMirror

-npm install
-copy your own modules from the MagicMirrorSAVE to the respective MM2.1.0 directory
-install necessary node modules for your own modules
done
Check the installed version of electron

pi@Infoboard:~ $ more MagicMirror/node_modules/electron/dist/version
v1.4.15

run MM with ‘npm start’ and monitor the CPU usage with ‘top’
and the magic is there: 2 to 3 % CPU usage in case you are not running newsfeed or other modules with a lot of rendering stuff. If I include the newfeed modul CPU usage will increase up to 30%. So, I go without newsfeed!

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I hope that help some or the other.

Mykle1

@Mr.Sponti said in Electron CPU usage:

I hope that help some or the other.

Thank you for adding your results to this topic, and the steps you took to downgrade MM and Electron. I’m sure your post will help someone, as this topic has helped quite a few people.

Did you downgrade because you were having the CPU usage issue? Can you tell me what your usage was before you downgraded? Thanks

Mr.Sponti

@Mykle1 Yes, I downgraded due to high CPU usage with MM2.1.1 & electron1.4.17. Top showed a usage between 100 and 200% and my own written moduls had a really bad performance.

Mykle1

@Mr.Sponti said in Electron CPU usage:

Yes, I downgraded due to high CPU usage with MM2.1.1 & electron1.4.17. Top showed a usage between 100 and 200% and my own written moduls had a really bad performance.

Ok, thank you. I’m glad that you’re seeing the benefit of this workaround. Let’s hope that it gets addressed and corrected sometime in the future.

Kugelfang

@Mr.Sponti

I tried your precise instructions but my system still installed electron 1.7.9

i started with a fresh jessy install on my raspberry pi 3. i then installed the latest version of node.js and copied the MM 2.10 folder to my pi. I then modified the dependancy for electron to 1.4.15 in the package.json and run the installation. However i still ended up with electron 1.7.9 which runns really bad…

it would be great if someone could help me

Mykle1

@Kugelfang said in Electron CPU usage:

it would be great if someone could help me

npm install electron@1.4.15