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@thomascharbonnel
thomascharbonnel / set-tmux-title
Last active October 19, 2021 07:42
Set tmux pane title to short hostname on ssh connections for Fish
# Copy that into your ~/.config/fish/config.fish
function ssh
set ps_res (ps -p (ps -p %self -o ppid= | xargs) -o comm=)
if [ "$ps_res" = "tmux" ]
tmux rename-window (echo $argv | cut -d . -f 1)
command ssh "$argv"
tmux set-window-option automatic-rename "on" 1>/dev/null
else
command ssh "$argv"
@jboner
jboner / latency.txt
Last active May 21, 2024 18:29
Latency Numbers Every Programmer Should Know
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