Electron CPU usage

[SashMare]

Hi.

I made a downgrade Electron from v1.7.15 to v1.4.15.
CPU load up to 320% is gone.

Hardware: BCM2835
Revision: a22082
MagicMirror: 2.1.2

[wtidwell]

@SashMare @Mykle1 my
I also downgraded electron to 1.4.15 and I’m seeing dramatically improved performance!

[djsunrise19]

@wtidwell said in Electron CPU usage:

@SashMare @Mykle1 my
I also downgraded electron to 1.4.15 and I’m seeing dramatically improved performance!

Do you have some CPU load Screenshots? As I read, around 55% is to high too.

[wtidwell]

@djsunrise19
Not on hand but I’m seeing in the mid 20’s with newsfeed animations

[Mykle1]

@wtidwell said in Electron CPU usage:

I also downgraded electron to 1.4.15 and I’m seeing dramatically improved performance!

Well, that’s good news! :^)

[Mykle1]

You guys are both running MM 2.1.2? There has been some mention that this problem arose after the upgrade. My Pi3 B mirror is still running MM 2.1.0. :-/

Just a thought.

[mibafz00]

@Mykle1
Today, I tried the following:

MM 2.1.2 + Electron 1.7.5 --> CPU 100% during transitions

MM 2.1.2 + Electron 1.4.15 --> problem still there, CPU 100% during transitions

MM 2.1.0 + Electron 1.7.5 --> problem still there, CPU 100% during transitions

MM 2.1.0 + Electron 1.4.15 --> problem (probably) gone, CPU 40% during transitions

So i guess you have to downgrade both, MM and electron…!?

[Mykle1]

@mibafz00 said in Electron CPU usage:

MM 2.1.0 + Electron 1.4.15 --> problem (probably) gone, CPU 40% during transitions

I’m curious. What is the CPU load at rest, when no transitions are executing?

In any case, that’s a good amount of testing on your part, and hopefully it will lead to a final diagnosis of the problem.

[djsunrise19]

Today, I tried a few things, too. Perhaps my results could be helpful for us. Sorry, this will be a long post ;). I have following the devices:

• Raspberry 3 Model B - my standard mirror device
• Asus Tinker Board
• odroid C2 (ARM64)

Software Versions MM:

• MM v2.1.2 on all devices

Electron Versions:

• Raspberry 3 Model B (v1.6.11)
• Asus Tinker Board (v1.4.15) but v1.6.11 works the same
• odroid C2 (ARM64) (v.1.8.0 - because of the x64; I uninstalled spectron, because there is no x64 support)

Configs:

• Standard (Calendar, Compliments, Newsfeed, Clock)
• MyConfig (Calendar, Compliments, Newsfeed, Clock, Todoist, Sonos, Netatmo, WheaterUnderground, Stocks, Reiseauskunft, Strava); here, cpu usage is a little bit higher, but the behaviour is the same.

The 100% usage topic seems to be a electron problem and I think it can be solved with some downgrades of MM2 and electron. v.1.7.5 seems to be bad. Whatever, here is what I found out:

1. nmon with the ATB (v1.7.5 electron here) and default config:
   
   CPU usage while transitions is very high. Lagging!

2. nmon with the ATB (v1.4.15 electron here) and default config:
   
   CPU usage is better but, to be honest, way to high for transitions (cpu peaks). And still some small lags.

3. nmon with the odroid and default config:
   
   The best result. but still peaks while the transitions. Some lags here, too.

So, here is my actual config:
4) nmon with the Raspberry 3 Model B and MyConfig:

Same here, still lags.

The last thing I tried was very interesting. I opened my chromium on the ATB and put the webadress from my Raspberry 3 Model B device in it. So I openend that Rapsberry 3 Model B MM2 on my ATB. And that happens:

Absolutely smooth, no peaks at all.

BTW: My Raspberry 3 Model didn’t have any more cpu usage while that process.

Can anybody tell us, WHY?

[A Former User]

@djsunrise19
As I see, rendering engine of electron seems to be the reason of whole of thing. Electron has its own v8 and renderer. I doubt it goes worse on some late version. I don’t know why, but there is few things we could do.

Report this to electron, wait a patch. Or downgrade or… turn off the animation.