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iperf3 results between Chelsio T6225-CR and Intel X710-DA4
I ran two iperf3 tests between two hosts using Chelsio T6225-CR and Intel X710-DA4, respectively. Both NICs are connected to the supervisor interfaces on a Sup8E in a Cisco Catalyst 4500E chassis. Wirespeed is 10 Gbit/s.
Read More → iperf3 results between Chelsio T6225-CR and Intel X710-DA4Acceptable performance of cxgbe(4), and TOE almost didn’t crash the system
After upgrading this system to stable/12 r348672, my Chelsio T6225-CR NIC finally provided acceptable performance.
Read More → Acceptable performance ofcxgbe(4), and TOE almost didn’t crash the system
Lenovo ThinkPad T430s stuck in airplane mode
A student came by my office carrying his Lenovo ThinkPad T430s. Windows 10 was stuck in airplane mode. I saw no other alternative than disabling the Radio Management Service and reboot the computer.
Read More → Lenovo ThinkPad T430s stuck in airplane modeCitrix Hypervisor 8.0.0 and FreeBSD guests running with UEFI boot firmware
I installed Citrix XenServer 7.2 on a spare server, created a small VM running FreeBSD/amd64 head r347896, and updated the host all the way to XS 7.6. Upgrading to Citrix Hypervisor 8.0.0 requires boot media, and the procedure is pretty painless. I added the XS80E001.zip update and rebooted the host. Neither a license server nor a license […]
Read More → Citrix Hypervisor 8.0.0 and FreeBSD guests running with UEFI boot firmwareGoodbye Joe
A.k.a. {‘EXIT’,joe,goodbye}.
Read More → Goodbye JoeKB4474419 and KB4489878
For some unknown reason, KB4474419 and KB4489878 failed to install automatically on Windows 7 SP1 x64 and Windows Server 2008 R2 x64, respectively. One client was unable to install KB4474419 and two servers had issues with KB4489878. After struggling for a while, I opted to download the updates and installing them manually. Go to https://www.catalog.update.microsoft.com/ […]
Read More → KB4474419 and KB4489878Parallel ZFS mounting
Parallel mounting of ZFS filesystem was introduced in r344569 and is great for shortening the boot time. The change creates a cosmetic problem, partial ordering of the mounted filesystems. Here’s a shell script coercing the output of df(1) into a comprehensible listing.
Read More → Parallel ZFS mountingDesktop icons in modern Windows
Having access to “Azure Dev Tools for Teaching” (formerly known as MS Imagine, MS DreamSpark, and MSDN Academic Alliance) for training and experimentation has its perks, but I miss the ability to show certain desktop icons without activating Windows 10 and/or Server 2019. Here’s how.
Read More → Desktop icons in modern WindowsGetting Bareos up & running on FreeBSD stable/12
I’m in the process of figuring out if Bareos can replace AMANDA in my shop. What is better than setting up a test server and do as many mistakes as possible before going live?
Read More → Getting Bareos up & running on FreeBSD stable/12Binary message in Cisco Digital Network Architecture: Intent-based Networking for the Enterprise (Networking Technology)
I’m waiting for my copy of “Cisco Digital Network Architecture: Intent-based Networking for the Enterprise (Networking Technology)” to arrive. In the meantime, I glanced at the contents on Amazon. Among the dedications, there is a binary message. Add a bit of Erlang magic and the message is revealed.
Read More → Binary message in Cisco Digital Network Architecture: Intent-based Networking for the Enterprise (Networking Technology)