In order:
Edu Fernández eduardo
hellerbarde
/ latency.markdown
Created
May 31, 2012 13:16
— forked from jboner/latency.txt
Latency numbers every programmer should know
L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns
Compress 1K bytes with Zippy ............. 3,000 ns = 3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns = 20 µs
SSD random read ........................ 150,000 ns = 150 µs
Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs
JoshuaEstes
/ 000-Cheat-Sheets.md
Last active
April 23, 2025 10:31
Developer Cheat Sheets for bash, git, gpg, irssi, mutt, tmux, and vim. See my dotfiles repository for extra info.
MicahElliott
/ rbenv-howto.md
Created
April 17, 2012 18:11
Setting up and installing rbenv, ruby-build, rubies, rbenv-gemset, and bundler
This guide enables you to install (ruby-build) and use (rbenv) multiple versions of ruby, isolate project gems (gemsets and/or bundler), and automatically use appropriate combinations of rubies and gems.
# Ensure system is in ship-shape.
aptitude install git zsh libssl-dev zlib1g-dev libreadline-dev libyaml-dev
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| gem 'activemerchant' |
As configured in my dotfiles.
start new:
tmux
start new with session name:
flaneur2020
/ Gemfile
Created
February 8, 2012 02:27
less painful web prototyping with sinatra, slim, sass, and coffeescript
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| source 'http://ruby.taobao.org' | |
| gem 'sinatra' | |
| gem 'sinatra-reloader' | |
| gem 'slim' | |
| gem 'sass' | |
| gem 'coffee-script' | |
| gem 'compass' | |
| gem 'pry' |
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| # Start Keymando at login | |
| # ----------------------------------------------------------- | |
| start_at_login | |
| # System-wide mappings | |
| # ----------------------------------------------------------- | |
| # Ctrl-Backspace maps to Alt-Delete for laptop use | |
| map "<Ctrl-delete>", "<Alt-backspace>" # (delete & bs are reversed in keymando) | |
| map "<Ctrl-Cmd-delete>", "<Cmd-backspace>" # delete to EOL |