On Sun, Sep 16, 2018 at 2:09 PM Thomas Solignac <soligna...@gmail.com>
wrote:

> I tried loading with goroutines and without, and I get substantially the
same process time (38s).

The I/O speed of the disk device as well of the interface it's connected to
is finitie. Throwing more goroutines at the task can have a speed up effect
only up to using all of the bandwidth. Then it becames actually slower
because of the non zero overhead added to all of the concurrent I/O
requests.
-- 

-j

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