IO throttling.

[stefanpenner]

Hey, I'm curious if interest exists in introducing some throttling on IO, this would be to prevent overwhelming the system when copying large trees.

Or maybe a recommendation for preventing this. I realize the synchronize variant (not yet merged) would likely not have this issue.

[davglass]

Sure, throttling might be very handy for large file tree's. I haven't seen this issue yet, but I'm sure you have ;)

[stefanpenner]

Ok. I'm unsure about available time, but I'll keep it on my queue. especially if I run into it more often.