McGarrah Technical Blog

Linux Disk I/O Performance in the Homelab

5 min read

I swapped my physical disks around in my low-end testing hardware cluster. I have a mixture of soldered to the motherboard eMMC and an external USB3 Thumbdrive serving for a root file systems and external /usr volumes now. I would like a quick performance check on reading and writing to those file systems. I also don’t want to setup a huge performance benchmark suite or additional tooling. I just want some quick results at this point.

My basic question is what did I loose in this decision to break out my /usr out to an external USB3 drive. How much performance did I loose?

Google Wifi running OpenWRT

1 min read

I have a pile of first generation Google Wifi units that I’m upgrading from to the latest Nest Wifi Pro that has WiFi 6e support. I want to reuse the older network devices for a secondary network but want greater control over them.

MacOS Outlook Calendar Copy Events

1 min read

The Copy/Paste of an Event in the Outlook Calendar is no longer offered and cut off without much notice. I can confirm this in Outlook on the Mac as of 4Q-2024. This appears to also impact Windows users but they have a registry workaround to re-enable it. This is not a bug but functionality that was intentionally removed by Microsoft for reasons mentioned in their post below.

Outlook blocks copying meetings with “Copying meetings is not supported.”

This change drove me insane as I historically used calendar events to track my work and export it for hour accounting against projects. Using Tempo with Jira integration made this even easier. Before this change, I would just copy some work event from earlier and move it to a new time that had my project code and description of the project. It was a massively convenient piece of my workflow.

So, deep breath, I finally found another method to make copies of Events that was not obvious.

Diagnosing a broken microwave

3 min read

My relatively new microwave just stopped heating things for no apparent reason one morning. We bought it a couple years back (about 3 years ago), so I was not happy as I expect these to work awhile with several working for ten (10) plus years. We picked up a new one from the local white box retailer as we wanted a replacement quickly. But my wife while digging around on Youtube found Microwave works but wont heat - Cheap and easy fix which was exactly what we experienced.

That video said it was likely a fuse or diode which are both cheap enough that they are worth an attempt at fixing. That will give me an extra microwave for the kids to use upstairs if I can fix it and save some landfill space.

fuse diode
Fuse Diode

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