gmirror(8) rebuild speed

[Jordi Espasa Clofent]

Hi,

I wonder if is possible to configure the gmirror rebuild speed.
Neither I've found any related info in the net nor the man pages.

-- 
I must not fear. Fear is the mind-killer. Fear is the little-death that brings total obliteration. I will face my fear. I will permit it to pass over me and through me. And when it has gone past I will turn the inner eye to see its path. Where the fear has gone there will be nothing. Only I will remain.

Bene Gesserit Litany Against Fear.