Hi expert,
We use intel ixgbe NIC in our host, and we have set the option as below to enable 8 VMDQ for each NIC.
esxcfg-module -s "InterruptType=2,2,2,2 VMDQ=8,8,8,8" ixgbe
If the host is not prepared by vCD(use VxLAN) or VIO(use VDS without VxLAN), the physical NIC's VMDQ numer is 8, and pre-set maximums rx buf is 4096.
Buf if we prepare the host with vCD(use VxLAN) or VIO(use VDS without VxLAN), the physical NIC's VMDQ numer is 4, and pre-set maximums rx buf is 512.
These change will obviously affect the network performance of our application. So I want to know is it the system implementation or something could be configured?
Any reply would be appreciated!
The normal situation of rx buf is like below:
Ring parameters for vmnic6:
Pre-set maximums:
RX: 4096
RX Mini: 0
RX Jumbo: 0
TX: 4096
Current hardware settings:
RX: 456
RX Mini: 0
RX Jumbo: 0
TX: 1024
[root@VDF109:~] ethtool -S vmnic6 |grep queue |grep packet
tx_queue_0_packets: 0
tx_queue_1_packets: 0
tx_queue_2_packets: 0
tx_queue_3_packets: 0
tx_queue_4_packets: 0
tx_queue_5_packets: 0
tx_queue_6_packets: 0
tx_queue_7_packets: 0
tx_queue_8_packets: 0
rx_queue_0_packets: 1084
rx_queue_1_packets: 0
rx_queue_2_packets: 0
rx_queue_3_packets: 0
rx_queue_4_packets: 0
rx_queue_5_packets: 0
rx_queue_6_packets: 0
rx_queue_7_packets: 0
rx_queue_8_packets: 0
after prepared with VxLAN or VIo, the value was changed:
[root@VDF109:~] ethtool -g vmnic8
Ring parameters for vmnic8:
Pre-set maximums:
RX: 512
RX Mini: 0
RX Jumbo: 0
TX: 4096
Current hardware settings:
RX: 512
RX Mini: 0
RX Jumbo: 0
TX: 4096
[root@VDF109:~] ethtool -S vmnic8 |grep queue |grep packet
tx_queue_0_packets: 2878481859
tx_queue_1_packets: 0
tx_queue_2_packets: 1039548483
tx_queue_3_packets: 0
tx_queue_4_packets: 0
rx_queue_0_packets: 2595905
rx_queue_1_packets: 1351314766
rx_queue_2_packets: 1365270610
rx_queue_3_packets: 1735407715
rx_queue_4_packets: 0
BR.
Haifeng.
