Electron CPU usage

wtidwell

@TiemenMoesker I tried two pies with exactly the same result. My spikes are way higher than 55%, on the order of max processing.

A Former User

I have a very stupid question.
In my new ATB, transition animation caused CPU usage around max 70%.(by nmon. htop shows less than that… around 30~50%). Without transition, near 10~20%.
But… I had not felt the performance issue before this thread. Will it be a real problem? I’m not an expert, but I think, temporally CPU usage could be high than we’ve thought. Should I really worry about this?

djsunrise19

@wtidwell said in Electron CPU usage:

@TiemenMoesker I tried two pies with exactly the same result. My spikes are way higher than 55%, on the order of max processing.

Hm, okay. But that seems to be a little bit weird. Imagine there are f.e. 8 modules. 3 of them make a fade at the same time (compliments, feed and calendar / netatmo, …). Then max processing is over 100%. Thats the problem in my first screenshot. 320% max cpu. This can not be right.

djsunrise19

@Sean said in Electron CPU usage:

I have a very stupid question.
In my new ATB, transition animation caused CPU usage around max 70%.(by nmon. htop shows less than that… around 30~50%). Without transition, near 10~20%.
But… I had not felt the performance issue before this thread. Will it be a real problem? I’m not an expert, but I think, temporally CPU usage could be high than we’ve thought. Should I really worry about this?

My ATB is coming today. I’ll made a new installation with all my modules and settings from my actual raspi. I’m very excited and I’ll give a report.

All in all it seems crazy to me, that those transitions are so cpu heavy. And in some cases (look at those nmon screenshots here) the cpu load is way to high and the mirror becomes unusable. So in that case, we should worry about that.

Mykle1

@Snille said in Electron CPU usage:

The was originally @Snille idea!

Run in Pi3 terminal (or in SSH): cat /proc/cpuinfo
Compare hardware and revision… :)
Hardware : BCM2835
Revision : a02082

Pi 3 Model B 1GB a02082 (Sony, UK)
Pi 3 Model B 1GB a22082 (Embest, China)

Does anyone with Hardware :BCM2709 have this problem?

Does anyone with Hardware :BCM2835 NOT have this problem?

TiemenMoesker

@Mykle1

Maybe we are on to somthing here.
My hardware =BCM2835
Revision= a02082

And I DO have this problem.

strawberry 3.141

if i remember correct there is also a possibility to increase performance of transformations, but I’m not sure. Have to research on this

EDIT: I can’t do any testing for a while, if someone wants to get a hand on it I think this should make an effect as it will optimize the rendering from cpu usage to gpu. It’s still a new stuff though and I’m not sure if it is supported in electron yet.

.MODULENAME {
  will-change: opacity;
}

replace modulename with the actual module name

Mykle1

@TiemenMoesker said in Electron CPU usage:

Maybe we are on to somthing here.
My hardware =BCM2835
Revision= a02082
And I DO have this problem.

My hardware = BCM2709

I do NOT have this problem

I’ve long suspected that this was/is a hardware issue. Why? I’ve done nothing special or different to my Pi 3 (except for adding a fan), yet it runs flawlessly, smoothly, and without the cpu overload experienced by a few select users. Assuming they have done nothing out of the ordinary (most have done fresh installs of the OS and default install of MM) yet their Pi 3’s exhibit inordinate amounts of cpu load at rest and extreme cpu load with just a simple function like the compliments changing.

@strawberry-3-141 There’s no need for me to try your suggestion but perhaps someone experiencing this problem will test it and report back their findings.

TiemenMoesker

@strawberry-3.141

Ill hook up my PI in a sec and test it. I am supposed to put that line of code in the main.css file right? (Just to be sure)

Mykle1

@TiemenMoesker

custom.css probably

TiemenMoesker

@strawberry-3-141
@Mykle1

Sad to report; Didn’t seem to solve the problem. YET, It almost seemed like the fade out animation was a tiny bit smoother, can’t say it for sure tho.

strawberry 3.141

@TiemenMoesker bugger, also when you increase gpu memory to a higher level than 64mb default

Also it could still be unsupported in electron or it has to be taken to another element…

TiemenMoesker

@strawberry-3.141

I’ve tried 64,128 and 256. No improvement :(

strawberry 3.141

@TiemenMoesker maybe also @Jeff could have a look after his holidays as he is quiet familiar with css and he could check if the stuff I mentioned is valid

Mykle1

@TiemenMoesker said in Electron CPU usage:

@strawberry-3.141
I’ve tried 64,128 and 256. No improvement :(

I don’t even remember changing this to 96, but it’s been like that since January, and no issues.

TiemenMoesker

@strawberry-3.141 Alright, although I am not sure this has anything to do with css. First, because 99% of the people who have MM2 don’t have this problem, yet the same css. Second, I just found out that it’s not just the Newsfeed and the Compliments. I have installed the MMM-Earth module and the same thing happends. Time freezes, animation starts (not smooth at all, it only shows me one fade frame), CPU usage spikes to 99% and my PI is hotter than a BBQ.

I think it has something to do with the hardware.

My hardware =BCM2835
Revision= a02082

TiemenMoesker

@Mykle1

Just set is to 96, still the same.

Mykle1

@TiemenMoesker said in Electron CPU usage:

I think it has something to do with the hardware.

My suspicion as well, as previously stated. And just to cover all bases, the only interface I have enabled is VNC. I don’t know if that matters in the least.

TiemenMoesker

I researched the BCM2835 today if there where any known problems with it. Turns out there are, I just didn’t understand any of them. English is not my first language and I am a kinda new to the whole Raspberry Pi stuff and all the programming around it.

strawberry 3.141

@TiemenMoesker I’m sure thats not the reason for it, but it was worth trying it as a possible fix