anyone profile CPU, RAM, and IO at different stages?

[syadnom]

I'm looking for some info on what resources are used at each phase. I'm using plotman right now and I like how it identifies sub-phases as well so I'd really like to break it down that far.

I'm hoping to write a bash script to track active plots and trigger new plots at specific stages as well as pause processes that are about to advance when another is in a contension phase for that resource. ie, I don't want multiple plots in stage 4 writing to the same spindle, I'd rather pause the second one and let the first finish. That's a bit of a macro view on it, I want to dive down deeper and effectively schedule to have one plot using a finite resource at a time.

another example is that RAM usage fluctuates wildly between stages, if I schedule this so that I only let the right number of plots enter a heavy RAM stage at a time I can maximize things.

I'm just lacking this profile information. I'm collecting that now, but it's going to take time to get across all my rigs and have confidence in the numbers. If I can crowd source more data I'll be ahead.