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From: Stefan Binna <stefan.binna@salzburgresearch.at>
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Date: Tue, 1 Sep 2015 15:31:17 +0200
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Cc: Thomas Pfeiffenberger <thomas.pfeiffenberger@salzburgresearch.at>,
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Subject: [dpdk-dev] Fast Failover Test Results
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Hi @all,

I've conducted some fast failover tests on a SDN infrastructure, whereby
following three configurations were used for the device under test (DUT):

- Intel 82574L with default driver e1000e
- Intel 82574L with DPDK
- Realtek RTL8111/8168/8411 PCI Express with default driver r8169

There were two paths connected to the DUT, e.g. Path 1 and Path 2.
So by default Path 1 had been used. When Path 1 was disconnected, the
time it took to switch to Path 2 had been measured by counting the lost
packets.
Several tests have been conducted and the median calculated.

Terminology:

Median FF: Median fast failover time / ms
Median LP: Median lost packets / packet(s)

                       Median FF   Median LP

DPDK            1700            3363
Intel              350              690
Realtek         350              695

Anyone an idea why DPDK is so "slow"?

Best regards,
     Stefan.