Performance monitoring for phones

My Nexus 6 often slows to a crawl.  Is there anything similar to the "Performance" tab in the Task Manager for Windows that shows which resource (CPU, Memory, Disk, Wi-Fi, Bluetooth PAN, or GPU) is getting maxed out at any given moment?
frugalmuleAsked:
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Devin BeckerDevOps Associate @ EECommented:
frugalmule,

I'm not sure which items come with this item for free, but it would this be worth checking out(the additional items are $1.99, but I don't know exactly what those are since I use iOS)

Hopefully this is along the lines of what you were looking for

Devin Becker
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