yzdann

unbind C-b
set -g prefix C-a

# Mouse support
set-option -g mouse on
set -g @scroll-speed-num-lines-per-scroll "1"

# make tmux display things in 256 colors
set -g default-terminal "screen-256color"

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if [[ $(spotifycli --status)  ]]; then
  SONG=$(spotifycli --song)
  SPOTIFY_WINDOWD_ID=$(wmctrl -l | grep -i "$SONG" | head -1 | awk '{ print $1 }')
  echo "<img>/home/yzdann/.scripts/spotify.png</img><click>wmctrl -i -a $SPOTIFY_WINDOWD_ID</click>"
else
  echo "<img>/home/yzdann/.scripts/spotify-gray.png</img><click>spotify %U</click>"
fi

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SPOTIFY_WINDOWD_ID=$(wmctrl -l | grep -i "spotify free" | head -1 | awk '{ print $1  }')

if [[ "$SPOTIFY_WINDOWD_ID"   ]]; then
  wmctrl -i -a "$SPOTIFY_WINDOWD_ID"
else
  spotify %U
fi

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WG="wgx"
WG_UP=$(ip -o link show | awk -F': ' '{print $2}'| grep $WG)
if [[ "$WG_UP" ]]; then
  echo "<img>/home/yzdann/.scripts/wg26.png</img><click>konsole -e wg-quick down $WG</click>"
else
  echo "<img>/home/yzdann/.scripts/wg26-gray.png</img><click>konsole -e wg-quick up $WG</click>"
fi
# genmon bash /home/yzdann/.scripts/wg.sh

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TMUX_WINDOW_ID=$(wmctrl -l | grep -i tmux | grep -i konsole | awk "/$rx/"'{print $1}' | head -1 )
TMUX_CURRENT_FIRST_SESSION=$(tmux list-session  | cut -d':' -f1 | head -1)

echo $TMUX_WINDOW_ID

# activate the window terminal with tmux if existed
if [[ ! -z "$TMUX_WINDOW_ID" ]]; then
  wmctrl -i -a $TMUX_WINDOW_ID
else
  # attach to current session

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latency

https://igor.io/latency/ footnotes of https://igor.io/latency/

---

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Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

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If one of the servers needs to be temporarily removed from the load‑balancing rotation, it can be marked with the down

    server backend3.example.com down;

With this configuration of weights, out of every 6 requests, 5 are sent to backend1.example.com and 1 to backend2.example.com.

    server backend1.example.com weight=5;
    server backend2.example.com;

location /resources {

yzdann

• Intro
  • Problem
  • Solution
• Setup
  • A server
  • A client
  • compile_commands.json file generation
• Linting
• Code formatting

yzdann

mv /etc/haproxy/haproxy.cfg{,.original}