From: Jamal Hadi Salim <jhs@mojatatu.com>
Date: Tue, 30 Sep 2014 07:07:37 -0400

Note, there are benefits as you have shown - but i would not
consider those to be standard use cases (actully one which would
have shown clear win is the VM thing Rusty was after).

I completely disagree, you will see at least decreased cpu utilization
for a very common case, bulk single stream transfers.

For this reason my view is that i should be able to disable via
ifdef bulking (yes, I know DaveM hates ifdefs ;->).

Vehemntly _disagree_. :)