netdev - Latency difference between fifo and pfifo

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Date:	Mon, 05 Dec 2011 23:10:13 -0500 (EST)
From:	"John A. Sullivan III" <jsullivan@...nsourcedevel.com>
To:	netdev@...r.kernel.org
Subject: Latency difference between fifo and pfifo_fast

Hello, all.  We are trying to minimize latency on our iSCSI SAN.  The network is entirely dedicated to the iSCSI traffic.  Since all the traffic is the same, would it make sense to change the qdisc for that interface to fifo from the default pfifo_fast or is the latency difference between the two completely negligible? Thanks - John
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