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@jboner
jboner / latency.txt
Last active July 23, 2025 02:01
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
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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
@entaroadun
entaroadun / gist:1653794
Created January 21, 2012 20:10
Recommendation and Ratings Public Data Sets For Machine Learning

Movies Recommendation:

Music Recommendation:

@spicycode
spicycode / tmux.conf
Created September 20, 2011 16:43
The best and greatest tmux.conf ever
# 0 is too far from ` ;)
set -g base-index 1
# Automatically set window title
set-window-option -g automatic-rename on
set-option -g set-titles on
#set -g default-terminal screen-256color
set -g status-keys vi
set -g history-limit 10000