Spark Dev on Mac OS very high CPU load on idle

Troubleshooting
1

Hello,

While using my laptop to run Spark Dev I noticed a very fast battery drain. Here are the results running the ‘Activity Monitor’. I am using OS X 10.8.5
Just running Spark Dev (0.0.19) with one empty window:

now running spark dev with one empty window and the serial monitor open:

If I run the Arduino IDE to do the same I get a CPU usage of less then 5%. Why is the Spark Dev using so much CPU?

Markus

2

We have an issue logged about this and will be looking into it https://github.com/spark/spark-dev/issues/60 Thanks for reporting :slight_smile: As you can see I’d like to see it be more efficient as well!

3

I’ve been wondering what caused my laptop to run so hot lately and traced it down to running Serial Monitor in Particle Dev. Is there a solution to this other than quitting Particle Dev and restarting without the Serial Monitor?

4

I’m on windows and dev on my system just locks up with high cpu for a couple of minutes before coming back to life again, so didn’t think it’s just a mac problem,

5

I am having this problem too on OSX 10.11 connecting to a Particle Core.

6

I’ve narrowed this down to Serial Monitor. Are you using that feature?