ix0 and ix1 ifconfig options different on Supermicro board

[BulkMailForRudy]

I just did another test to a machine with a Chelsio card.

  Server D (cxl3) -> Server A = 3.5Gbps

Turning on flags lro tso4 tso6 vlanhwtso , yields

  Server D (cxl3) -> Server A = 9.1 Gbps

Oddly, this was an ipv4 iperf, but tso6 seems to help.

I had settings turned off per 
https://wiki.freebsd.org/10gFreeBSD/Router#Disabling_LRO_and_TSO

Servers A,B, and C are all running services.  Server D is acting as a 
router.  Are the LRO and TSO only for TCP to the box, or will it 
increase speeds for forwarding if I enable it?


Thanks,

Rudy


On 11/22/19 1:30 PM, BulkMailForRudy wrote:
>
> I have nearly identical setups, but ix0 and ix1 are getting different 
> options at boot.  This seems to be the only difference I see between 
> machines and I am trying to answer the question, Why can Server A 
> iperf close to line rate while the other servers can not?
>
> The Test:  iperf -P 3 -c REMOTE_ADDR
>
> Server A (ix1) -> Server C (ix0)  = 9.4Gbps
> Server B (ix0)-> Server C (ix0) = 5.6Gbps
> Server C (ix0)-> A (ix1) or B (ix0)  = 5.0Gbps
>
>
> The motherboards are identical between A,B and C and the configs very 
> similar.  The only difference is that Server A is plugged into ix1 
> while Server B and C are using ix0.
>
>
> I am not modifying the flags at boot (eg ifconfig -tso), yet ix0 lacks 
> TXCSUM,TSO4,TSO6,LRO,WOL.
>
> ix0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 
> 0 mtu 1500
> options=a538b9<RXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,WOL_UCAST,WOL_MCAST,WOL_MAGIC,VLAN_HWFILTER,VLAN_HWTSO,RXCSUM_IPV6> 
>
>         ether *ac:1f:6b:6a:14:6*4
>         media: Ethernet autoselect (10Gbase-T <full-duplex>)
> ix1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
> options=e53fbb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,WOL_UCAST,WOL_MCAST,WOL_MAGIC,VLAN_HWFILTER,VLAN_HWTSO,RXCSUM_IPV6,TXCSUM_IPV6> 
>
>         ether *ac:1f:6b:6a:14:6*5
>         media: Ethernet autoselect (10Gbase-T <full-duplex>)
>
> I did try adding some flags to ix0 and -- not sure if this was the 
> reason -- the box started acting oddly and I ended up rebooting it.
>
>
> My hunch has is that there is somethign with the TSO4.
>
>
> Rudy
>
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