Matlab spawns many, many "InstallMa​thWorksSer​viceHost" processes, degrading performance on MacOS.

Matlab R2024a spawns many, many "InstallMathWorksServiceHost" processes, degrading performance on MacOS. This happened on my older computer but I just upgraded to a new iMac with 10 M4 processors, 32GB of memory. It still happens. Any way to stop this from happening?

[Walter Roberson]

Data point:

I am not seeing any of those processes hang around on my intel iMac running Sequoia 15.3.2

[Yair Altman]

Perhaps you have multiple Matlab versions installed?

[Jeff]

Thanks to you both for taking time to consider my question. Walter, your response suggests that there is something idiosyncratic to my problem (although who knows?). And Yair, a good idea to check if I have multiple versions installed. Turns out I do not. My next step is to do a clean uninstall/reinstall, on the theory that something in the excutable has become corrupted. We'll see if that works, and I'll report back in a bit.

[Jeff]

Performed a full purge and reinstall. The "InstallMath..." processes are back again. Overall performance has not slowed much as far as I can tell, which is good. All of the CPUs are running hot--around 200 degrees F--which isn't normal. I will continue to monitor.

[Jeff]

The reinstall has not eliminated the problem, but because I am now using a much faster machine, the degradation is not as noticeable. I don't know why Matlab should be spawning all these extra processes. Brand new install on a brand new (Apple Silicon) machine. Seems odd, and it is raising CPU temperatures, which will degrade performance over time. Any ideas from anyone?

[Jeff]

This answer may help. Just tried it.

https://www.mathworks.com/matlabcentral/answers/1815365-how-do-i-uninstall-and-reinstall-the-mathworks-service-host

It removes and reinstalls the service host.

[Jeff]

It appears to have worked. No spawning of processes, no overheating.

[Jeff]

48 hours later--no spawning of processes, processors running cool. That solution worked!

Answer 1

[Jeff]

This answer worked.

https://www.mathworks.com/matlabcentral/answers/1815365-how-do-i-uninstall-and-reinstall-the-mathworks-service-host

It removes and reinstalls the service host.