This is a list of general-purpose optimizations for C programs, from the most impactful to the tiniest low-level micro-optimizations to squeeze out every last bit of performance. It is meant to be read top-down as a checklist, with each item being a potential optimization to consider. Everything is in order of speed gain.
Choose the best algorithm and data structure for the problem at hand by evaluating:
| [Unit] | |
| # Usage: systemctl enable --now duperemove-weekly@$(systemd-escape <path>).timer | |
| # Utilize %J specifier for duration set. | |
| # One can hardlink/copy with 'weekly' part changed | |
| # to set other duration. | |
| Description=Deduplicate %I at calendar event (%J) | |
| After=local-fs.target | |
| Requires=local-fs.target | |
| Conflicts=shutdown.target rescue.target rescue.service emergency.service |
| import torch, grp, pwd, os, subprocess | |
| devices = [] | |
| try: | |
| print("\n\nChecking ROCM support...") | |
| result = subprocess.run(['rocminfo'], stdout=subprocess.PIPE) | |
| cmd_str = result.stdout.decode('utf-8') | |
| cmd_split = cmd_str.split('Agent ') | |
| for part in cmd_split: | |
| item_single = part[0:1] | |
| item_double = part[0:2] |
The following was adapted from:
| #!/usr/bin/env python3 | |
| # -*- coding: utf-8 -*- | |
| """ | |
| Name | |
| merge_gdl_archives - merge multiple download archives into one | |
| Usage | |
| merge_gdl_archives.py merged.sqlite old1.sqlite old2.sqlite ... | |
| """ |
Wayland breaks everything! It is binary incompatible, provides no clear transition path with 1:1 replacements for everything in X11, and is even philosophically incompatible with X11. Hence, if you are interested in existing applications to "just work" without the need for adjustments, then you may be better off avoiding Wayland.
Wayland solves no issues I have but breaks almost everything I need. Even the most basic, most simple things (like xkill) - in this case with no obvious replacement. And usually it stays broken, because the Wayland folks mostly seem to care about Automotive, Gnome, maybe KDE - and alienating everyone else (e.g., people using just an X11 window manager or something like GNUstep) in the process.
| # Storing installed package names | |
| echo $(pacman -Qentq) > pacman.bak | |
| echo $(pacman -Qemtq) > yay.bak | |
| echo $(pacman -Qdq) > pacman-optdep.bak | |
| # Global config | |
| cp /etc/pacman.conf pacman.conf.bak | |
| cp -r /etc/pacman.d/ pacman.d.bak | |
| cp /etc/hosts hosts.bak | |
| cp /etc/hostname hostname.bak |
| #include <X11/Xlib.h> | |
| #include <X11/Xutil.h> | |
| #include <X11/Xos.h> | |
| #include <stdlib.h> | |
| #include <stdio.h> | |
| #include <locale.h> | |
| #include <assert.h> | |
| Display *dpy; | |
| Window win; |
| // ==UserScript== | |
| // @name No YouTube Volume Normalization | |
| // @namespace https://gist.github.com/abec2304 | |
| // @match https://www.youtube.com/* | |
| // @match https://music.youtube.com/* | |
| // @grant GM_addElement | |
| // @version 2.74 | |
| // @author abec2304 | |
| // @description Enjoy YouTube videos at their true volume | |
| // @run-at document-start |
| #!/usr/bin/env bash | |
| # To fix the " gpg: WARNING: unsafe permissions on homedir '/home/path/to/user/.gnupg' " error | |
| # Make sure that the .gnupg directory and its contents is accessibile by your user. | |
| chown -R $(whoami) ~/.gnupg/ | |
| # Also correct the permissions and access rights on the directory | |
| chmod 600 ~/.gnupg/* | |
| chmod 700 ~/.gnupg |
