[dpdk-dev] Number of memory channels (EAL Options)

Muhammad Ali Muhammad.Ali at xflowresearch.com
Thu Jun 20 13:20:35 CEST 2013


Hi everyone

I am running DPDK sample application compiled in Fedora 14 environment.

I have used following command to run the App

./<application> -c f -n 4

c= bitmask of cores to to be used.
and
n= number of memory channels

Now what does 'n' actually defines ?. Is this the number of DMA channels
between RAM (hugepages) and NIC. ? If not so then what it is ?

How does number of memory channels will effect the performance ?

BTW I am using hugepagesize=1G
and Number of Hugepages=4

My question might be very basic, but I am totally confused. Please help me
out here.

Thank you

Regards
-- 

Muhammad Ali
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