Hello, can i get suggestion from intel support team to resolve ISCSI performance issue related to this type of NICs?
Short explanation of current test lab:
two PC's, one is client Windows 7 x64 another is server Windows 2012 (iscsi target software installed - Starwind ISCSI SAN) each has 1 x520 nic directly connected to another by using Intel DA cable.
Negotiated speed is 10 Gbps. Only one port is connected directly to another nic on the server.
first test i've made - by using ntttcp utility to test total throughput - nothing closer to 10 GbE
test config
ntttcps -m 1,0,192.168.10.1 -l 1048576 -n 100000 -w -a 16
ntttcpr -m 1,0,192.168.10.1 -l 1048576 -rb 2097152 -n 100000 -w -a 16 -fr
this should load network up to 10 Gb.. but no luck.
one direction only 850-890 Mb, back direction 6 Gb.
updated latest drivers for windows 7 and windows 2012
playing with jumbo frames, C-states BIOS - no luck.
For ISCSI i'm receiving unacceptable results - even i'm using RAM disk iscsi target.
Any suggestions?