[ale] Ouch

[Solomon Peachy]

On Tue, Jan 02, 2018 at 10:24:07PM -0500, Raj Wurttemberg via Ale wrote:
> Ohh.. yeah... Ouch!!  A 30% performance hit?!?!  

It's actually not _that_ bad -- it's a significant performance hit on 
making system calls -- the only measurements I've seen have shown a 38% 
increase in the overhead to read() --actual processing is unaffected.

On the other hand, I/O intensive workloads are the most heavily 
impacted.  The PostgreSQL folks have done some preliminary benchmarks 
and it's not pretty:

  https://www.postgresql.org/message-id/20180102222354.qikjmf7dvnjgbkxe@alap3.anarazel.de

 - Solomon
-- 
Solomon Peachy			       pizza at shaftnet dot org
Coconut Creek, FL                          ^^ (email/xmpp) ^^
Quidquid latine dictum sit, altum videtur.
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