These are benchmarks demonstrating claims made in [the quick and practical
"MSI" hash table][blog]. It pits an MSI hash table set in C using an
integer permutation hash and an AES-NI hash, a C++ std::set, and Go
map[string]struct{}. Inputs are strings of length 1–8.
My results on an i7-8650U, GCC 12.0.1 (libstdc++), Clang 14.0.6 (libc++):
Time (s) Memory (MiB)
There is a strange lack of guides and tools online for compiling Gameboy Advance homebrew programs on Linux. I didn't want to use devkitpro - their installation method of requiring you to use a forked version of pacman is extemely strange and I didn't want to install all of that on my system just to complile some programs.
The only other guides I found for Linux were this one and this one which both involve compiling custom versions of GCC and assosicated libraries. This lead me down a road of pain, after spending multiple hours fixing compiler errors only to create new errors I gave up. I thought that their had to be a simpler way, and there is!
Debian already has a version of GCC that can compile ARM programs in the repos, no manual compiling necessary! The package is called arm-none-eabi-gcc.
| // Windows | |
| // g++ *.cpp -o vulkan -lSDL2main -lSDL2 -lvulkan-1 | |
| // Linux | |
| // g++ *.cpp -o vulkan -lSDL2main -lSDL2 -lvulkan | |
| // https://vulkan-tutorial.com/ | |
| #include <iostream> | |
| using namespace std; | |
| #include <SDL2/SDL.h> |
It seems that numerous GNU/Linux users (including myself) have been having issues with the system randomly "freezing" during light usage. From journalctl output and anecdotal accounts, it is speculated that the AMD Ryzen CPUs do not support other C-states for power management very well (at least on GNU/Linux distributions), and the freezing may be resolved by limiting the C-state of the CPU.
Limiting the C-state of the CPU can be done through the addition of the following kernel boot parameter.
processor.max_cstate=1
| #! /bin/bash | |
| ssh -D 4000 -C -c 3des-cbc -f [email protected] -p 22 sleep 10; \ | |
| chromium --proxy-server=socks5://127.0.0.1:4000 | |
| # Quick and dirty socks5 proxy | |
| # Compresses traffic ssh into host server and forks process to the background | |
| # Opens chromium and configures it to use socks5 proxy on port 4000 | |
| # Process autocloses when chromium is closed |
| wget -O /tmp/YaHei.Consolas.1.12.zip https://storage.googleapis.com/google-code-archive-downloads/v2/code.google.com/uigroupcode/YaHei.Consolas.1.12.zip | |
| unzip /tmp/YaHei.Consolas.1.12.zip | |
| sudo mkdir -p /usr/share/fonts/consolas | |
| sudo mv YaHei.Consolas.1.12.ttf /usr/share/fonts/consolas/ | |
| sudo chmod 644 /usr/share/fonts/consolas/YaHei.Consolas.1.12.ttf | |
| cd /usr/share/fonts/consolas | |
| sudo mkfontscale && sudo mkfontdir && sudo fc-cache -fv |
This focuses on generating the certificates for loading local virtual hosts hosted on your computer, for development only.
Do not use self-signed certificates in production ! For online certificates, use Let's Encrypt instead (tutorial).
| #!/bin/bash | |
| function install_dependencies() { | |
| echo "Installing dependencies..." | |
| sudo apt -qq update | |
| sudo apt -qq install -y curl git wget | |
| # sudo apt -qq install -y bison flex kernel-package libelf-dev libssl-dev | |
| sudo apt -qq install -y bison flex libelf-dev libssl-dev | |
| } |
There is a nice GIF illustrating a technique called "frustum culling" in this Kotaku article: http://kotaku.com/horizon-zero-dawn-uses-all-sorts-of-clever-tricks-to-lo-1794385026
The interwebs being what they are, this has also led to some controversy.
Some people have interpreted the opening sentence "Every time you move the camera in Horizon Zero Dawn, the game is doing all sorts of under-the-hood calculations, loading and unloading chunks of world to ensure that it all runs properly," as being about the GIF; that's not what frustum culling does, but that's probably not what the article's author meant anyway.
| Detecting and Mitigating DDOS Attacks | |
| #List all Finish (FIN) packets | |
| machine1 : sudo /usr/sbin/tcpdump -Nnn -i any -s0 'tcp[13] & 1 != 0' | |
| #List all SYN and SYN-ACK packets | |
| machine1 : sudo /usr/sbin/tcpdump -Nnn -i any -s0 'tcp[13] & 2 != 0' | |
