All posts by Trond Endrestøl

I stopped counting my age years ago. Personal interests besides computers and computer networks include, but are not limited to, astronomy, comics, music, and science (fiction).

Dell Precision 3530 and Symantec Ghost

Be sure to change SATA Operation from RAID to AHCI in the BIOS Settings before running Symantec Ghost from a memory stick. The former setting will effectively hide your NVMe drive. Better safe than sorry, reinstate the RAID selection afterwards. Ref.: https://www.dell.com/support/article/us/en/04/sln301036/windows-10-install-with-nvme-ssd-and-sata-drives?lang=en

Upgrading localbase on 13.0-CURRENT using ports-mgmt/synth

I upgraded base from 12.0-ALPHA9 to 13.0-CURRENT (r339639) on a VM today. While preparing for rebuilding localbase, I wiped clean /var/synth/live_packages/{All,Latest}/*, and cleaned the ccache repo stored in /var/cache/ccache. Trouble arose when I ordered ports-mgmt/synth to rebuild some 116 ports according to a specification stored in a local metaport. DEFAULT_VERSION+=ssl=base was being used at the time. Continue reading Upgrading localbase on 13.0-CURRENT using ports-mgmt/synth

iperf3 and Chelsio T6225-CR

I ran four tests yesterday using iperf3. The T6225-CR NIC still runs with Chelsio’s SM10G-SR optics. It’s amazing that receiving TCP streams runs at full speed. Sending TCP streams limps away only at a few megabits per second. This wasn’t expected at all. Even IPv6 runs faster than IPv4 for these particular tests. The Cisco switch at the other end uses Fiberworks’ SFP-10G-SR optics. Does anyone have any clues? Continue reading iperf3 and Chelsio T6225-CR

Chelsio T6225-CR and TOE

After upgrading to a recent base/stable/11, I noticed ifconfig -m now displays two more bits:

cc0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
             options=ec07bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,          VLAN_HWTSO,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6>
        capabilities=ecc7bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,TOE4,TOE6,VLAN_HWTSO,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6>
        ether 00:07:43:XX:XX:X0
        hwaddr 00:07:43:XX:XX:X0
        nd6 options=8021<PERFORMNUD,AUTO_LINKLOCAL,DEFAULTIF>
        media: Ethernet 10Gbase-SR <full-duplex,rxpause,txpause>
        status: active
        supported media:
                media 10Gbase-SR mediaopt full-duplex,rxpause,txpause
                media 10Gbase-SR mediaopt full-duplex,rxpause
                media 10Gbase-SR mediaopt full-duplex,txpause
                media 10Gbase-SR mediaopt full-duplex
                media 1000baseSX mediaopt full-duplex,rxpause,txpause
                media 1000baseSX mediaopt full-duplex,rxpause
                media 1000baseSX mediaopt full-duplex,txpause
                media 1000baseSX mediaopt full-duplex

TOE4 and TOE6 appear in the capabilities word, but not in the options word. (TOE in this case being TCP Offload Engine.) Continue reading Chelsio T6225-CR and TOE