Lanner HCP-72i1, Руководство пользователя

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Performance Test
We use the pktgen and ntb_device built in the kernel to
verify the maximum of efficiency that NTB can achieve
currently. Regardless of the network MTU limit of 65536
in the general network program, pktgen can directly
transmit the designated package size. The followings are
the scripts we use for this test.
Initialization
The settings listed below for the pktgen and ntb driver
are applied when executing the scripts below:
count=10000 , pkt_size=1048500 (for pktgen) •
trsnsport_mtu= 0x100000(for ntb driver) •
It indicates that the script will automatically end when
10000 packets are transmitted, and calculate the
transmission speed.
Initialize the Bottom Board
~# sh ./ntb_a.sh
Initialize the Upper Board
~# sh ./ntb_b.sh
The Transmission from the Bottom Board to the
Upper Board.
Diagram B: Flow A
Start the Sending of Packets
In the Bottom Board, please issue the following
command:
~# echo “start” >/proc/net/pktgen/pgctrl
Check the Packet Count and Speed of Transmission
In the Bottom Board, please issue the following
command:
~# cat /proc/net/pktgen/eth0
To check that whether the Upper Board ‘s NTB network
device receives 10000 packets or not, please issue the
following command:
~# ifconfig eth0
The Transmission from the Upper Board to the
Bottom Board
Diagram C: Flow B
Start the Sending of Packets
In the Upper Board, please issue the following command:
~# echo “start” >/proc/net/pktgen/pgctrl