Solving QCA6174 WiFi crashing, high ping, unusable on Linux

One glaring issue I have with my laptop (using a Qualcomm NIC) is the ridiculous high pings while using WiFi. > 400ms for some packets to reach a near by machine and back is totally unacceptable. It makes ssh unusably slow and even mosh on the edge of barely usable. The situation is so bad... Continue Reading →

How to run FreeBSD/ARM64 in a VM on an ARM Linux server

COSCUP 2020 just ended and I learned a lot in the two days. One of the many cool things is that I can actually run FreeBSD on my server! So be it inside a VM. Whatever, it is still very cool to have actual UNIX running on ARM. Friends in the FreeBSD community at COSCUP... Continue Reading →

CERN ROOT tips and tricks

This is more of a note for myself. Over time, I've learned some useful fact about ROOT that I now wish I have known when I started using ROOT. Hopefully as a ROOT user, you could also find  some of these helpful. Tell ROOT to not show the startup banner You do: user@somepc:~$ root -l... Continue Reading →

Real time plotting in C++ using ROOT

Sometime you just need to plot stuff as time progresses. Maybe you need to plot some statistics of your software, or visualize in realtime. But there's not much option. matplotlib is too slow for realtime, plplot's C/C++ interface is not maintained, QCustomPlot requires you to have a working Qt window and has a horrible API,... Continue Reading →

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