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I have attached an Intel 10G ixgbe card to a RackMounted HP Proliant GL380 G6 server and connected it via fiber cables to a same card in an expansion bay for c7000 HP enclosure having GL460G6 servers and bnx2x cards.
When I try to send 10Gbps traffic from GL380, in maximum case it reaches only 6Gbps! I believe that this might be solved by enabling DCA and I/OAT Features of the CPU! but system BIOS setup does not any relevant feature to modify these CPU Features!
Would you please tell me HOW Should I change the DCA (Direct Cache Access) and I/OAT features of the CPU?