How to deal with high CPU load on slow force change ?

I tried to apply force to object, so that it soar in the air.

Code (CSharp):

1. void FixedUpdate () {
2.         rb.AddForce(Vector3.up * thrust);
3.     }

Tried to change force a very little bit, so it would move very slow up or down. And when I was doing that I started to hear my computer's fan. I saw that it's heavy for CPU. And I think that it's gonna be even harder to bear for smartphone. What would you recommend ?

 

I wouldnt expect this to be that bad TBH. 50 times a second (by default) is certainly quite a bit but I wouldnt expect it to bring a PC to its knees or anything. Did you check the profiler? It will show you exactly what is going on.

 

Any comments on my profiler's screenshot ?

 

I see nothing suspicious. It was probably just a coincidence caused by something else. Is it reproductible (repeatable)? EDIT: If it is reproductible, you should look to the task manager, if it really burden CPU so much.

 

Most of your time seems to be spent idling waiting for VSync. You've got plenty of CPU time up your sleeve. I wouldn't worry about it.

 

Just a thought: You might have noticed a fan speed change just from Unity in general. I mean if it was in a very low state before, the difference could be noticeable. I have no idea, but I certainly know moving 1 object with that script won't be causing your pc to go crazy on its own

 

It is repeateble. You're right, it seems that Unity always uses CPU a lot - till 55% while editor is in idle. It seems that when object moving it takes a little bit more of CPU, so fan starts work harder. It is Linux's Unity-2017.3.0p2.

 

I restarted Unity and it's got better. I think it's alright now. Thanks.

 

You should look up "Unity Profiler".