What is periodic-io-microstackshot-report and periodic-microstackshot-report?

[tech_apple]

In my iphone 7 plus's diagnostics information, i see these and i don't understand.

what's that meaning ?

 

[Kidder1994]

+1, same here on my iphone 7, i don't know what they mean...

 

[Sprintsux]

+1, same here on my iphone 7, i don't know what they mean...

I get these also once a day. I noticed when I charge my phone I will generate these logs.if I charge my phone twice in one day I only get one. So next time you charge your phone check your diagnostic logs.