Scott Brickner scottb
madrobby
/ gist:5489174
Created
April 30, 2013 14:43
Install Phantom.js on Ubuntu 10.04 and tweak for better rendering quality.
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| 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
/ latency.txt
Last active
November 18, 2024 08:23
Latency Numbers Every Programmer Should Know
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| 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 |