Querying QMI Device Info (4G/4G cellular)

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Managing LXC containers

Starting LXC Container Entering LXC Container Add host directory to container Make container privileged Disable IPv6 Attaching USB device Read more

Bash String Matching

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Enabling WDT on Raspberry Pi 5 via U-Boot

Currently BCM2712 WDT is not supported on U-Boot, so to enable it manually via registers, run the following commands: Read more

U-Boot

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Analyzing PostgreSQL log insert performance

The goal of this test is to see how PostgreSQL behaves with heavy insert load of logs.The PostgreSQL (15.8 (Debian 15.8-0+deb12u1)) is running within KVM VM with 2 cores and further restricted via cgroupv2 cpu.max parameter set to “25 100“,... Read more

Analyzing Elasticsearch log insert performance

The goal of this test is to see how Elasticsearch behaves with heavy insert load of logs.The Elasticsearch (8.15.3) is running within KVM VM with 2 cores and further restricted via cgroupv2 cpu.max parameter set to “25 100”, to give... Read more

Controling Linux resource usage via cgroups v2

Create a cgroup Assign an existing process to cgroup Limit cpu usage to half of an core Pin process to two cores Read more

Change NetworkManager connection routing cost

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Configure Ansible Default Behavior

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