Date: Fri, 22 Nov 2019 13:30:39 -0800 From: BulkMailForRudy <crapsh@monkeybrains.net> To: net@FreeBSD.org Subject: ix0 and ix1 ifconfig options different on Supermicro board Message-ID: <e4f76015-a661-30aa-a9ef-166f683a6082@monkeybrains.net>
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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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