jboner

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

bryanl

# ~/.tmux.conf
#
# See the following files:
#
#   /opt/local/share/doc/tmux/t-williams.conf
#   /opt/local/share/doc/tmux/screen-keys.conf
#   /opt/local/share/doc/tmux/vim-keys.conf
#
# URLs to read:
#

mikhailov

# NOTICE: to get Nginx+Unicorn best-practices configuration see the gist https://gist.github.com/3052776

  $ cd /usr/src
  $ wget http://nginx.org/download/nginx-1.2.1.tar.gz
  $ tar xzvf ./nginx-1.2.1.tar.gz && rm -f ./nginx-1.2.1.tar.gz

  $ wget ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/pcre-8.30.tar.gz
  $ tar xzvf pcre-8.30.tar.gz && rm -f ./pcre-8.30.tar.gz

  $ wget http://www.openssl.org/source/openssl-1.0.1c.tar.gz

johanneswuerbach

---
language: objective-c
before_script:
- ./scripts/travis/add-key.sh
after_script:
- ./scripts/travis/remove-key.sh
after_success:
- ./scripts/travis/testflight.sh
env:
  global:

mnutt

Instrument Anything in Rails 3

With Rails 3.0 released a few weeks ago I've migrated a few apps and I'm constantly finding useful new improvements. One such improvement is the ability to log anything in the same way that Rails internally logs ActiveRecord and ActionView. By default Rails 3 logs look slightly spiffier than those produced by Rails 2.3: (notice the second line has been cleaned up)

Started GET "/" for 127.0.0.1 at Mon Sep 06 01:07:11 -0400 2010
  Processing by HomeController#index as HTML
  User Load (0.2ms)  SELECT `users`.* FROM `users` WHERE (`users`.`id` = 3) LIMIT 1
  CACHE (0.0ms)  SELECT `users`.* FROM `users` WHERE (`users`.`id` = 3) LIMIT 1

Rendered layouts/_nav.html.erb (363.4ms)

jtimberman

sudo apt-get install libssl-dev
sudo gem install fpm

wget ftp://ftp.ruby-lang.org//pub/ruby/1.9/ruby-1.9.3-p392.tar.gz
tar -zxvf ruby-1.9.3-p392.tar.gz
cd src/ruby-1.9.3-p392
time (./configure --prefix=/usr && make && make install DESTDIR=/tmp/installdir)

fpm -s dir -t deb -n ruby -v 1.9.3-p392 -C /tmp/installdir \
  -p ruby-VERSION_ARCH.deb -d "libstdc++6 (>= 4.4.3)" \

protocool

/*
  As of version 1.1.2, Propane will load and execute the contents of
  ~Library/Application Support/Propane/unsupported/caveatPatchor.js
  immediately following the execution of its own enhancer.js file.

  You can use this mechanism to add your own customizations to Campfire
  in Propane.

  Below you'll find two customization examples.

tmm1

require 'rubygems'
require 'eventmachine'
require 'socket'

module RPCServer
  include EM::P::ObjectProtocol
  def post_init
    @obj = Hash.new
  end
  def receive_object method

mikegehard

# We need this to fix the random timeout error that we were seeing in CI.
# May be related to: http://code.google.com/p/selenium/issues/detail?id=1439

Capybara.register_driver :selenium_with_long_timeout do |app|
  client = Selenium::WebDriver::Remote::Http::Default.new
  client.timeout = 120
  Capybara::Driver::Selenium.new(app, :browser => :firefox, :http_client => client)
end

Capybara.javascript_driver = :selenium_with_long_timeout

jeffrafter

var express = require('express');
var sys = require('sys');
var oauth = require('oauth');

var app = express.createServer();

var _twitterConsumerKey = "YOURTWITTERCONSUMERKEY";
var _twitterConsumerSecret = "YOURTWITTERCONSUMERSECRET";

function consumer() {