💾 Intro I just found a very cheap SD card on an online store and since I know that there are some fake around, I wanted to quickly test if its size and speed respect the specs. Edit: after first publish, a kind reader noticed me that The F3 tools are a perfect fit for the same task and that’s right; if you want to follow a manual path and learn something in the journey, continue reading… ...
🌡️ Intro For those running a datacenter, or just a simple homelab server, the arrival of summer heat means an increase in air conditioning use. On this post I asked myself how a Linux engineer can measure how much energy is the system consuming so we can start to reason about workload optimization for better power consumption patterns. 🔋 Idle power drain As a starting point, let’s measure how much power my PC is consuming when idle, doing absolutely nothing; or better: nothing useful for computation or service but just running usual, default operating system tasks. ...
a small script to check out the number of processors in your linux machine #!/bin/bash S=$(grep "physical id" /proc/cpuinfo | sort -u | wc -l) C=$(grep "cpu cores" /proc/cpuinfo |sort -u |cut -d":" -f2) grep -i "model name" /proc/cpuinfo echo your system has $S sockets with $C CPU cores each mandatory sample output: model name : Intel(R) Xeon(R) CPU L5640 @ 2.27GHz your system has 2 sockets with 6 CPU cores each