High CPU usage when no activity (Mac OS X, Fuse v0.25.0 build 7511)

Bug Reports
1

When running fuse preview (without -t Android/iOS) the CPU usage is almost constantly at > 98% even though views has been updated. Sitting on a MacBook Air this would drain my battery pretty quickly if I wasn’t hooked up to an outlet.

It isn’t as intense when running with -t iOS but it still uses a lot of CPU.

2

I’ve noticed the same thing using “Fuse-Preview” -> “Local” on OS X El Capitan. Running Fuse version 0.25.1 (build 7615).

** Key point for High CPU usage for me is: “For any Fuse project using javascript”.**

Steps to reproduce:

  1. Download and “Fuse-Preview” -> “Local” the “material-upvote” example.
  2. Start Activity monitor and you’ll see “Fuse” using 12-13% if it’s in the foreground.
  3. Download and “Fuse-Preview” -> “Local” the “Loading-Button” example
  4. In monitor and you’ll see “Fuse” using 96-101% if it’s in the foreground.
3

Hi! Thanks for reporting this. We’ll investigate!

Any more specs you can give on your machines and setup would be appreciated.

4

I’m on a MacBook Pro (Retina, 13-inch, Late 2013) with a 2.4GHz core I5 and 8GB 1600MHz DDR3 running El Capitan (10.11.6). Running Atom with the fuse-plugin - so I right-click on the file I’m editing and choose “Fuse-Preview” -> “Local” to run it.

Other than Atom and the Fuse Simulator, I was running Safari, terminal and Activity Monitor at the time.

Let me know if you need anything else.

5

Hi, this issue is solved, and the fix will be part of Fuse 0.26.

6

We decided to release a hotfix for this problem, in Fuse 0.25.2. You can get it now from the download page.

7

Awesome! Thanks for the super fast turn-around and repair!!!