On 29.08.2013 05:32, Slawa Olhovchenkov wrote:
On Thu, Aug 29, 2013 at 12:24:48AM +0200, Andre Oppermann wrote:
..
while Intel DPDK claims 80MPPS (and 6windgate talks about 160 or so) on the
same-class hardware and
_userland_ forwarding.
Those numbers sound a bit far out. Maybe if the packet isn't touched
or looked at at all in a pure netmap interface to interface bridging
scenario. I don't believe these numbers.
80*64*8 = 40.960 Gb/s
May be DCA? And use CPU with 40 PCIe lane and 4 memory chanell.
Intel introduces DDIO instead of DCA:
http://www.intel.com/content/www/us/en/io/direct-data-i-o.html
(and it seems DCA does not help much):
https://www.myricom.com/software/myri10ge/790-how-do-i-enable-intel-direct-cache-access-dca-with-the-linux-myri10ge-driver.html
https://www.myricom.com/software/myri10ge/783-how-do-i-get-the-best-performance-with-my-myri-10g-network-adapters-on-a-host-that-supports-intel-data-direct-i-o-ddio.html
(However, DPDK paper notes DDIO is of signifficant helpers)
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