XG-7100 ix0/1 speed

[randal]

Hi there,

Just picked up the XG-7100.  Before configuring the unit, I connected one of the SFP's with a 10G Twinax cable to my 10G switch and did some iperf tests.  I'm getting much lower than expected rates:

[2.4.3-RELEASE][root@pfSense.localdomain]/root: ifconfig ix1
ix1: flags=8843 <up,broadcast,running,simplex,multicast>metric 0 mtu 1500
        options=e407bb <rxcsum,txcsum,vlan_mtu,vlan_hwtagging,jumbo_mtu,vlan_hwcsum,tso4,tso6,lro,vlan_hwtso,rxcsum_ipv6,txcsum_ipv6>ether 00:08:a2:0d:65:f6
        hwaddr 00:08:a2:0d:65:f6
        inet 10.1.5.7 netmask 0xffffff00 broadcast 10.1.5.255
        inet6 fe80::208:a2ff:fe0d:65f6%ix1 prefixlen 64 scopeid 0x2
        nd6 options=21 <performnud,auto_linklocal>media: Ethernet autoselect (10Gbase-Twinax <full-duplex,rxpause,txpause>)
        status: active

[2.4.3-RELEASE][root@pfSense.localdomain]/root: iperf -s -w 4M -B 10.1.5.7
–----------------------------------------------------------
Server listening on TCP port 5001
Binding to local address 10.1.5.7
TCP window size: 4.00 MByte

[  4] local 10.1.5.7 port 5001 connected with 10.1.5.28 port 44212
[ ID] Interval      Transfer    Bandwidth
[  4]  0.0-10.0 sec  2.79 GBytes  2.39 Gbits/sec

This is the raw 10G interface (no lagg or built-in switch) and the external 10G switch is not showing any errors on the interface.

Has anyone else experienced similar throughput issues with the XG-7100?</full-duplex,rxpause,txpause></performnud,auto_linklocal></rxcsum,txcsum,vlan_mtu,vlan_hwtagging,jumbo_mtu,vlan_hwcsum,tso4,tso6,lro,vlan_hwtso,rxcsum_ipv6,txcsum_ipv6></up,broadcast,running,simplex,multicast>

[randal]

Answered my own question.  I was able to obtain closer to 10GBit speeds using jumbo frames:

[2.4.3-RELEASE][root@pfSense.localdomain]/root: ifconfig ix1.7
ix1.7: flags=8843 <up,broadcast,running,simplex,multicast>metric 0 mtu 9000
        options=600703 <rxcsum,txcsum,tso4,tso6,lro,rxcsum_ipv6,txcsum_ipv6>ether 00:08:a2:0d:65:f6
        inet 10.1.7.8 netmask 0xffffff00 broadcast 10.1.7.255
        inet6 fe80::208:a2ff:fe0d:65f6%ix1.7 prefixlen 64 scopeid 0x14
        nd6 options=21 <performnud,auto_linklocal>media: Ethernet autoselect (10Gbase-Twinax <full-duplex,rxpause,txpause>)
        status: active
        vlan: 7 vlanpcp: 0 parent interface: ix1
        groups: vlan</full-duplex,rxpause,txpause></performnud,auto_linklocal></rxcsum,txcsum,tso4,tso6,lro,rxcsum_ipv6,txcsum_ipv6></up,broadcast,running,simplex,multicast>

[2.4.3-RELEASE][root@pfSense.localdomain]/root: iperf -s -B 10.1.7.8
------------------------------------------------------------
Server listening on TCP port 5001
Binding to local address 10.1.7.8
TCP window size: 4.00 MByte (default)
------------------------------------------------------------
[  4] local 10.1.7.8 port 5001 connected with 10.1.7.6 port 56306
[ ID] Interval       Transfer     Bandwidth
[  4]  0.0-10.0 sec  9.47 GBytes  8.13 Gbits/sec