Skip to content

Instantly share code, notes, and snippets.

View scottb's full-sized avatar

Scott Brickner scottb

  • The Brickner Group
  • Washington, DC
View GitHub Profile
@madrobby
madrobby / gist:5489174
Created April 30, 2013 14:43
Install Phantom.js on Ubuntu 10.04 and tweak for better rendering quality.
sudo apt-get update
sudo apt-get install libfreetype6 libfreetype6-dev libfontconfig
# /etc/apt/sources.list should contain these:
# deb http://us.archive.ubuntu.com/ubuntu/ lucid multiverse
# deb-src http://us.archive.ubuntu.com/ubuntu/ lucid multiverse
# deb http://us.archive.ubuntu.com/ubuntu/ lucid-updates multiverse
# deb-src http://us.archive.ubuntu.com/ubuntu/ lucid-updates multiverse
sudo echo ttf-mscorefonts-installer msttcorefonts/accepted-mscorefonts-eula select true | sudo debconf-set-selections
@jboner
jboner / latency.txt
Last active May 7, 2024 19:39
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