Category Archives: Uncategorized

Customer says “I need XXms latency.” What do you do? Break out the command line and ping from server A to server B. Numbers below what they asked for? Great. What happens when it’s higher than they need? I have a customer that is asking for less than 0.2 ms of latency between two WindowsContinue reading “Ping is not a real latency measurement”

I often hear about NUMA and it’s performance implications. I even speak about it when people ask me about best practices. I never really had any numbers or proof that it was in fact a major performance issue until recently. Some of you may know that my main PC is a VM running on anContinue reading “NUMA and Gaming Performance”

One of my clients who has TAM services was trying to run the TAM Insights script to provide their TAM with some data. This script can take some time to run and must be run against each vCenter. For compliance purposes this client cannot have an idle session on their terminal servers used to accessContinue reading “TAM Insights and K8s”

Following up on my post about vCenter Certificate Replacement. I needed a scheduled way to update the certificate so I didn’t forget again and end up in the mess I was in to begin with. This turned out to be very simple. First I had to download the certificate from the load balancer again usingContinue reading “Certificate Replacement on vCenter: Part 2”

I was looking at my Raspberry Pi 4 the other day thinking of new uses for it. I thought I’d try to build a thin client. I went out to the VMware Horizon View Client download page and pulled down the latest Linux tarball. The tarball has an armhf directory and I thought “great! ThisContinue reading “Horizon Client on Pi4”

I use a Let’s Encrypt certificate on my VCSA. It validates and give me a pretty padlock in my address bar. Generally I use a wildcard cert for all my services but vCenter wont take that. So I have a “regular” server certificate for vCenter. As with all Let’s Encrypt certificates it expires regularly. ThisContinue reading “Certificate Replacement on vCenter”

With the release of the converged VDS (CVDS) in ESXi 7 NSX-T users are able to convert back to a vCenter managed VDS. This helps in reducing management overhead for the environment and you can read all about it elsewhere. For people who have a multi transport VLAN confguration on your N-VDS the regular migrationContinue reading “Multi Cluster NSX-T NVDS to VDS Migration”

My calendar has been pretty packed recently. I’m covering an extra territory, interviewing people for positions, doing internal training, and a bunch of other things. With all that I have had some times when I’ve been septuple booked. That’s seven meetings at once. When they are all important how do you pick which one toContinue reading “Calendar Roulette”

Does anyone else remember trying to programmatically read exchange emails back in 2009? What a pain it was. At the time I was on the Fulton County help desk. I would take calls and emails then turn them into tickets. It was painful. So I automated it… I was using Perl at the time. ThereContinue reading “Microsoft Graph and Salesforce”

I’ve got TDS DSL at a location. I was using their modem/router/wifi device for a while but wanted to have a site to site vpn to another location that didn’t require funky routing. So I picked up a pfSense box to use as the router. I hooked it up and everything seemed OK. Got myContinue reading “TDS DSL Bridge Mode”