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 ... | |
| """ |
Source: https://x.com/LundukeJournal/status/1940441670098809093
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 2.73beta | |
| // @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 |
