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A New Chapter for MagicMirror: The Community Takes the Lead
Read the statement by Michael Teeuw here.

Electron CPU usage

Scheduled Pinned Locked Moved Troubleshooting
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  • ? Offline
    A Former User @djsunrise19
    last edited by Sep 6, 2017, 10:26 PM

    @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.

    D M 2 Replies Last reply Sep 7, 2017, 7:41 AM Reply Quote 0
    • D Offline
      djsunrise19 @Guest
      last edited by Sep 7, 2017, 7:41 AM

      @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?

      M 1 Reply Last reply Sep 7, 2017, 11:24 AM Reply Quote 0
      • M Offline
        Mykle1 Project Sponsor Module Developer @djsunrise19
        last edited by Sep 7, 2017, 11:24 AM

        @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

        Create a working config
        How to add modules

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        • M Offline
          Mykle1 Project Sponsor Module Developer @Guest
          last edited by Sep 7, 2017, 11:37 AM

          @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.

          Create a working config
          How to add modules

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          • L Offline
            loctruong96 @TiemenMoesker
            last edited by loctruong96 Sep 9, 2017, 12:28 AM Sep 9, 2017, 12:23 AM

            @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)

            M 1 Reply Last reply Sep 9, 2017, 1:28 AM Reply Quote 0
            • M Offline
              Mykle1 Project Sponsor Module Developer @loctruong96
              last edited by Sep 9, 2017, 1:28 AM

              @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

              Create a working config
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              • L Offline
                loctruong96
                last edited by loctruong96 Oct 2, 2017, 1:06 AM Sep 9, 2017, 3:50 AM

                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:

                1. Create a fresh install of RASPBIAN STRETCH WITH DESKTOP, connect to wifi, then run sudo apt-get update.
                2. sudo apt-get install npm
                3. sudo npm install electron@1.4.15 -g
                4. WAIT PATIENTLY FOR ELECTRON TO LOAD IN THE BACKGROUND
                5. a new line appear indicate electron has finished installing
                6. Go to your download folder, exact Magic Mirror 2.1.0
                7. Go to the newly exacted forlder, open another folder named config
                8. Change the file name Config.js.example to Config.js inside the config folder
                9. 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
                10. 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.

                M R 2 Replies Last reply Sep 9, 2017, 12:41 PM Reply Quote 5
                • M Offline
                  Mykle1 Project Sponsor Module Developer @loctruong96
                  last edited by Sep 9, 2017, 12:41 PM

                  @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.

                  Create a working config
                  How to add modules

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                  • E Offline
                    EventHorizon
                    last edited by Sep 10, 2017, 6:06 PM

                    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.

                    S 1 Reply Last reply Sep 10, 2017, 6:10 PM Reply Quote 0
                    • S Offline
                      strawberry 3.141 Project Sponsor Module Developer @EventHorizon
                      last edited by Sep 10, 2017, 6:10 PM

                      @EventHorizon it should be @types/node

                      Please create a github issue if you need help, so I can keep track

                      E 1 Reply Last reply Sep 10, 2017, 6:11 PM Reply Quote 0
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