Any way to know memory utilization and CPU utilization?

[yanshay]

i'm developing an application that's using embassy and alloc with both PSRAM and DRAM (if relevant, it's on ESP32S3)
I want to make a meaningful change that's quite complex and would require more memory and more CPU.
Is there a way to tell the utilization?

So the questions I'd have:

1. What's how much idle time does the CPU have on average, when it's at rest doing nothing.
2. How much memory did I utilize from the PSRAM (using alloc)?
3. How much memory did I utilize from the DRAM - that would probably mean how deep did the stack go and how far is it at that peak from the DRAM I allocated for alloc
4. How much is the allocated DRAM utilized at peak
5. How much memory do the embassy tasks take in total and specific tasks

With that information I can probably calculate if there's any point making such meaningful change rather than just try and after a lot of work find that I'm stuck on either memory or cpu or both.

Maybe there's already some tool to identify all that information?

[bugadani]

What's how much idle time does the CPU have on average, when it's at rest doing nothing.

There is no ready-made solution, but you can probably adapt something like this.

How much memory did I utilize from the PSRAM (using alloc)?

Read the documentation

How much is the allocated DRAM utilized at peak

I don't think we track this anywhere

How much memory do the embassy tasks take in total and specific tasks

They take as much as the arena you give to embassy. For per-task statistics, use nm and look for POOL objects. You can also print the size of a future using core::mem::size_of_val but keep in mind that a task you interact with is not a future.

[bjoernQ]

Nothing ready to use really - I have plans (let's call it ideas) to do something in that direction

I was playing around with "something" some time ago which might or might not be helpful: https://github.com/bjoernQ/ansi-and-stats