Electron CPU usage

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.

djsunrise19

@Sean said in Electron CPU usage:

@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.

Seems logical. But I have to mention, that there is no MMv2 and electron version number combination that works without those peaks and small lags. The smoothest way ist the browser directly (like in MMv1 - everything was fine there).

So the question is: Anyone here who doesn’t have those peaks and lags while the transitions with MMv2 and electron?

Mykle1

@djsunrise19 said in Electron CPU usage:

So the question is: Anyone here who doesn’t have those peaks and lags while the transitions with MMv2 and electron?

This topic is only 17 days old, yet it has 5.0k views already. So, obviously there is a lot of interest. My answer likely was lost somewhere above, so:

I do NOT have those peaks and lags

Mykle1

@Sean said in Electron CPU usage:

I doubt it goes worse on some late version

With all due respect, I have to disagree. New versions can break existing installations in any software, not just MM. It’s the very reason for many patches. However, we don’t know the reason for this issue, and it may well be that electron isn’t the cause, but some users have had a small measure of improvement with earlier versions.

loctruong96

@TiemenMoesker HOLY MOLLY, I am having this exact problem you guys are having. I double checked my hardware and revision. which are
hardware =BCM2835
Revision= a02082
and I DO have this problem, it seems nothing you guys tried work except downgrade , so I’m going to ask arrow to send me a replacement since i actually ordered BCM2837 not BCM2835. Let’s hope it work out! (mean while I will try the downgrade option, seemed to improve performance drastically for others)

Mykle1

@loctruong96 said in Electron CPU usage:

(mean while I will try the downgrade option, seemed to improve performance drastically for others)

Please keep us posted

loctruong96

OK, I can here by confirm that using MM 2.1.0 + Electron 1.4.15 improved performance massively. Each new transition now only uses 10-13% of CPU power (and very, very smooth). Even better than earlier report of 40%. For the specs of my pi 3 b
hardware = BCM2835
Revision = a02082
micro sd card - 16gb - class 4 (that’s right, only 4)
mouse + keyboard currently plugged in - no lag
OS = RASPBIAN STRETCH WITH DESKTOP
Thank you so much @Mykle1 for sharing your finding. Otherwise, I would be still trying to narrow down a potential work around.

For those who not sure how to do this:

Create a fresh install of RASPBIAN STRETCH WITH DESKTOP, connect to wifi, then run sudo apt-get update.
sudo apt-get install npm
sudo npm install electron@1.4.15 -g
WAIT PATIENTLY FOR ELECTRON TO LOAD IN THE BACKGROUND
a new line appear indicate electron has finished installing
Go to your download folder, exact Magic Mirror 2.1.0
Go to the newly exacted forlder, open another folder named config
Change the file name Config.js.example to Config.js inside the config folder
open terminal , cd Download/, cd MagicMirror-2.1.0, (OR whatever your location for the Magic Mirror 2.1.0 package is), npm install && npm start
9.5 If encounter error “404”, try “npm install npm@latest -g” (NOTE: some users experienced issues since they do not have the latest npm as global variable) @Reotch2 @EventHorizon
DONE!

Hopefully I will be able to return my pi 3 for a better hardware version to use with the latest Magic Mirror package but here is an acceptable work around for the time being.

Mykle1

@loctruong96 said in Electron CPU usage:

Thank you so much @Mykle1 for sharing your finding.

You are most welcome. :^)

I would like to give credit to everyone that is participating in this topic. By putting our heads together we’ve eliminated some possibilities but we haven’t pinpointed the problem, yet. We have narrowed it down a bit, though, and this workaround is helping some people. I’m glad you’re one of them.

EventHorizon

Just a quick post in an attempt to re-create the above steps. I get to the part where I have to type “npm install && npm start” and I get an error 404 ‘Not Found’. ‘types/node’ is not in the npm registry. ‘It was specified as a dependency of ‘electron’’

Any idea what I’m doing wrong?

Thanks.

strawberry 3.141

@EventHorizon it should be @types/node